Nokia SRA Composite Exam 4A0-C02 Questions and Answers

dumps2022-01-08T02:09:47+08:00

From the news on Nokia official website, Nokia SRA Composite 4A0-C02 exam combines four required individual exams into a single, integrated exam. The four individual exams are 4A0-102, 4A0-105, 4A0-106 and 4A0-107. If you are planning to earn SRA certification, you can choose to take the composite exam or 4 individual exams.

There are 80 questions in real Nokia SRA 4A0-C02 exam, and you have 150 minutes to write the test. The available language is English. The exam price is $400. We provide the latest Nokia SRA Composte 4A0-C02 exam questions and answers, which are good material in the preparation. Free Nokia certification 4A0-C02 exam questions and answers are available below.

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1. On the Alcatel-Lucent 7750 SR, where can network-queue policies be applied? (Choose two)

On the network egress port.

On the SD

On the access ingress port.

On the egress MD

On the SA

On the ingress MD

2. In a VPRN, how does the service provider ensure that customer addresses are unique when multiple customers use the same address space?

It is the customer responsibility to ensure their address space is unique

The Route Distinguisher ensures that addresses are unique between customers.

The Route Target ensures that addresses are unique between customers

The provider will advise the customers to change their addresses

The provider will use NAT to ensure that addresses are unique between customers

3. On the Alcatel-Lucent 7750 SR, what is a slope policy used for?

Defining the slope of the TCP slow-start mechanism for self generated traffic.

Defining the slope of the scheduling rate per forwarding class when using HQo

Defining the high and low slope values when deploying buffer admission control for UDP traffic in the committed buffer pool.

Defining the high and low slope values when deploying buffer admission control for TCP traffic in the shared buffer pool.

Defining the high and low slope values when deploying buffer admission control for TCP traffic in the committed buffer pool.

4. For the data packets in a VPRN, how is the inner label in an MPLS packet signaled?

Signaled via MP-BGP and used to identify the egress P

Signaled via T-LDP and used to identify the customer VPR

Signaled via MP-BGP and used to identify the customer VPR

Signaled via RSVP and LDP and used to identify the egress P

Signaled via RSVP and LDP and used to identify the customer VPR

5. Click the exhibit.

Which of the following best describes the output?

The AS-Path is not present because a policy is configured on PE2 to set it to null.

The AS-Path is not present because a policy is configured on CE1 to set it to null.

The AS-Path is not present because a policy is configured on PE1 to set it to null.

The AS-Path is not present because VPN-IPv4 routes do not propagate the IPv4 AS-Path BGP attribute.

6. You are providing a customer two VPLS services in two different Metro networks. VPLS 500 has been configured in Metro 1 and VPLS 900 has been configured in Metro 2. The customer has requested that they have connectivity between the Metro Networks with their existing VPLS services.

Which configuration on the PE routers linking the metro networks will allow for VPLS 500 and VPLS 900 to act as a single VPLS service? Assume default values for all VPLS parameters and SDP 999 exists between the metro networks.

Option A

Option B

Option C

Option D

7. Assuming that as-override has been used, which of the following statements describes the most likely location of prefix 10.1.2.0/24, based on the output from an Alcatel-Lucent 7750 SR shown below?

It is located in an Autonomous System directly connected to this router

There is a single Autonomous System between the local AS and the AS that originated the prefix

There are two Autonomous Systems between the local AS and the AS that originated the prefix

There may be two or more Autonomous Systems between the local AS and the AS that originated the prefix

It is located in Autonomous System 65100

8. Which of the following are the minimum requirements needed to classify traffic marked with DSCP AF11, AF12, and AF13 into the AF forwarding class and provide fair treatment to the drop precedence settings? (Choose three)

Profile mode queues

Priority mode queues

1 queue

3 queues

3 forwarding classes

1 forwarding class, with 2 subclasses

1 forwarding class, with 3 subclasses

9. Click the exhibit.

For the inter-AS model B VPRN, which of the following protocols is used to advertise routes between PE1 and ASBRI?

iBGP

eBGP

MP-iBGP

MP-eBGP

10. After configuring OSPF as the PE to CE routing protocol for a VPRN service you get the following output from an Alcatel-Lucent 7750 SR:

What is most likely wrong with the configuration?

OSPF is not configured on the CE router

There is a problem with OSPF authentication

The operational MTU does not match

The PE and CE router have different OSPF interface types configured

None of the above

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11. Click the exhibit.

Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions.

Given the following iBGP configuration on router A, what is the Next Hop for prefix 2001:DB8:A:401::1/128 on router B?

The IPv6 link-local address of the router D interface towards router

The IPv6 link-local address of the router A interface towards router

The IPv6 global address of router

12. Given the following VPRN topology:

The VPRN service 10 is correctly configured and operational with OSPF as the PE to CE routing protocol at both customer sites. The OSPF database on CE-A contains Type 1 LSAs.

These routes will appear as what LSA type on CE-B?

These routes will not appear on CE-B

Type 1 LSAs

Type 3 LSAs

Type 5 LSAs

Type 7 LSAs

13. Click on the exhibit below.

Based on the service-mtu of this B-VPLS, what is the maximum service-mtu of any connecting I-VPLS attached to this B-VPLS?

9100 bytes

9104 bytes

9108 bytes

9118 bytes

14. Which of the following about an Alcatel-Lucent 7750 SR MP-BGP update is FALSE? Assume default behavior.

An MP-BGP update carries an MPLS label that is used as the service label for a VPR

There can be multiple Route Targets per route in an MP-BGP update.

There can only be one Route Distinguisher per route in an MP-BGP update.

On a specific PE, the MP-BGP updates for prefixes from a single VPRN carry different labels.

Traditional BGP attributes and MP-BGP attributes are present in an MP-BGP update.

15. Click on the exhibit below.

Which bridge will become the root bridge?

Bridge B

Bridge C

Bridge D

Bridge E

16. Redundant spoke-SDPs are used between 2 Metro networks for redundancy.

How can load balancing be achieved across the redundant spoke-SDPs?

A single management VPLS using RSTP can be used to block different SDPs for different VPLS services.

A single management VPLS using 802.1D-2004 can be used to block different SDPs for different VPLS services

There is no way to have load balancing across redundant spoke-SDPs.

Two management VPLS using RSTP can be used to block different SDPs for different VPLS services.

17. What is the purpose of the Route Distinguisher?

It defines the VPN membership

It defines which routes are imported into the vrf

It defines which routes are exported from the vrf

It is used to make IPv4 addresses unique

It is used as the VPN label

18. Click the exhibit button below.

Based on the configuration of the network policy (below), what will be the forwarding class associated with a MPLS encapsulated customer packet that arrives on a dotlQ encapsulated network port 1/1/4:1 on P1 with the following characteristics:

EXP value = 6

DSCP value = cs1

Dot1pvalue = 3

19. How can one ensure that a specific switch will be select as root in an STP network?

Set the bridge priority to 131071.

Set the bridge priority to 0.

Set the bridge priority to 32768.

Leave the bridge priority as the default.

20. Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes on router R1?

Option A

Option B

Option C

Option D

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21. When a PE node receives a PBB encapsulated frame on a B-VPLS, how does the PE determine which l-VPLS it belongs to?

The l-TAG in the l-SID is inspected to determine where the frame should be delivered.

When the B-MAC header is stripped the customer MAC address is then looked up in the FDB

The l-SID in the l-TAG is inspected to determine where the frame should be delivered.

The PE inspects the service label in the MPLS header before stripping the B-MAC header.

22. In IEEE 802.1ag, how are loops detected?

Spanning-tree BPDUs are returned to the sender.

The MEP sees its own CFM frames returned to itself.

This is not a function of IEEE 802.lag but of 802.1D

The record field of the CFM frame keeps track of chassis-mac addresses.

23. Which of the following statements regarding BGP Fast Reroute is FALSE?

BGP Fast Reroute is triggered by IGP events.

The backup path is pre-computed and installed in the FI

BGP Fast Reroute is independent of number of affected prefixes.

BGP Fast Reroute uses the optimal path to the destination.

24. Click the exhibit.

Which of the following statements best describes the BGP sessions within the given network?

The session between AS 65202 and AS 65206 is an iBGP session.

The session between AS 65204 and AS 65206 is an intra-confederation eBGP session.

A BGP session is required between AS 65202 and AS 65204.

The BGP sessions within the member ASs are known as inter-confederation BGP sessions.

25. Click on the exhibit below.

CE-A is on VLAN 200 and CE-B is on VLAN 300.

Which of the following SAP ids can be configured on PE-A and PE-B to allow direct communication between CE-A and CE-B?

PE-A will require a SAP id of "sap 1/1/1:200" and PE-B will require a SAP id of "sap 1/1/1:300.

PE-A will require a SAP id of "sap 1/1/1" and PE-B will require a SAP id of "sap 1/1/1".

PE-A will require a SAP id of "sap 1/1/1:0" and PE-B will require a SAP id of "sap 1/1/1:0".

PE-A will require a SAP id of "sap 1/1/1:*" and PE-B will require a SAP id of "sap 1/1/1:*".

26. Complete the following statement. In a VPRN, the inner label is used to _______________.

Identify the customer network on the egress PE

Establish the LSPs between PE devices

Identify the egress PE in the MPLS domain

Identify the customer network on the ingress PE

27. Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP.

Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R7?

65206 65202 65100

(65206 65202)65100

(65204 65206 65202) 65100

(65200) 65100

28. How many designated ports are there in a spanning tree topology?

The same as the number of alternate ports in the topology

1 per segment

The same as the number of root ports

1 per switch

29. The port groups have been configured consistently on the PE routers, as highlighted in the exhibit.

Which SDP connection will be blocked first when the re-learn rate is exceeded?

The connection between PE-A and PE-C

The connection between PE-A and PE-B

The connection between PE-D and PE-C

The connection between PE*D and PE-B

30. In Active/Standby pseudo wires a failed pseudo wire has recovered.

Under what circumstances will the active pseudo wire revert to the previously failed link?

It will always revert to the previously failed link.

It will never revert to the previously failed link.

It will revert if the precedence of the previously failed link is set to 0 or "primary".

It will revert if the precedence of the previously failed link is lower than the currently active link

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31. Which of the following regarding the withdrawal of routes from one BGP speaker to another is TRUE?

An update message is used. Only a single prefix can be withdrawn at a time.

An update message is used. Multiple prefixes can be withdrawn at a time.

A withdraw message is used. Only a single prefix can be withdrawn at a time.

A withdraw message is used. Multiple prefixes can be withdrawn at a time.

32. Click on the exhibit below.

Assume the port on CE-A is sending two tags, a top tag of 100 and a bottom tag of 500.

PE-A is configured with a SAP id of 1/1/1:100.*.

How should PE-B be configured if CE-B is expecting a top tag of 200 and a bottom tag of 500?

PE-B will require a SAP id of "sap 1/1/1:500*".

PE-B will require a SAP id of "sap 1/1/1:100*".

PE-B will require a SAP id of "sap 1/1/1:500.200".

PE-B will require a SAP id of "sap 1/1/1:200*".

33. Which of the following best describes the relationship between locally configured policies and the direction of traffic?

Import policies affect the way the local AS receives traffic, while export policies affect the way it sends traffic.

Import policies affect the way the local AS sends traffic, while export policies affect the way it receives traffic.

Both import and export policies affect the way the local AS receives traffic, but not the way it sends traffic.

Both import and export policies affect the way the local AS sends traffic, but not the way it receives traffic.

34. Which of the following are major components of QoS functionality on the Alcatel-Lucent 7750 SR? (Choose three)

Microflow reservations using RSVP

DSCP to EXP translation

Traffic classification

Automatic profiling and policy configuration

Buffer memory management

Traffic scheduling

35. What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-Lucent 7750 SR?

All BGP routes are rejected.

All BGP routes are accepted.

All routes matching prefix list "List-1" are rejected.

All BGP routes matching prefix list "List-1" are rejected.

36. Which of the following about self-generated traffic QoS is TRUE?

The DSCP marking stays ncl for all applications; only the internal forwarding class is manipulated across different applications.

DSCP bits can be set per application, per routing instance.

The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.

Self-generated traffic can be marked at Layer 2 no matter what encapsulation is used on the network interfaces.

37. Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier who is an Internet Service Provider (ISP).

Which of the following configuration steps is NOT required?

Configuring iBGP sessions between PEs residing in different customer carrier sites.

Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-C

Configuring an IES service on PEL

38. Which command may be used on an Alcatel-Lucent 7750 SR to verify the number of VRF routes allowed, based on the maximum routes value configured in the service instance?

Show service id <service-id> base

Show router bgp <service-id> routes

Show service id <service-id> maximum-routes

Show router <service-id> status

39. What is the DA address used for in the Ethernet Header?

MAC learning

SA filtering

Routing table population

Frame forwarding

40. Click the exhibit.

Internet access is provided to the Red VPRN (ID 10) via an Internet VRF (ID 500).

For this configuration, which communities must be imported on the Red and Internet VRFs?

Red VRF imports only "Internet" Internet VRF imports only "Red-Only"

Red VRF imports "Internet" and "Red-Only" Internet VRF imports only "Red-Only"

Red VRF imports only "Red-Only" Internet VRF imports "Red-Only" and "Internet"

Red VRF imports "Internet" and "Red-Only" Internet VRF imports only "Internet"

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41. Click the exhibit.

AS 65550 owns CIDR block 10.64.0.0/12. Router R3 is advertising Client1 and Client2 networks into BGP. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "summary-only" enabled.

Which of the following routes are received by router R7?

Client1, Client2 and the aggregate.

Only the aggregate.

Only Client1 and the aggregate.

Only Client2 and the aggregate.

42. Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP).

If CE1 sends an IP packet to 192.60.100.1, which of the following is FALSE?

PE1 pushes an LDP transport label.

CSC-CE1 pops the LDP label and pushes a BGP label.

CSC-PE1 pops the BGP label and pushes two labels: a VPN label and an MPLS transport label.

CSC-PE2 pops the MPLS label and pushes a BGP label.

43. Which of the following statements about the VC-ID is false?

The vc-id is signaled in the control plane.

The vc-id is part of the data plane encapsulation.

There is a vc-id to vc-label mapping.

The vc-id has point to point significance.

44. How does PBB forward broadcast, unknown-unicast and multicast traffic from a B-VPLS to an l-VPLS?

The receiving PE checks the l-TAG in the l-SID to determine if there is a local l-VPLS on the node.

The receiving PE checks the l-SID in the l-TAG to determine if there is a local l-VPLS on the node.

The receiving PE checks the service label in the mpls header to determine if there is a local l-VPLS on the node.

The receiving PE checks the multicast B-DA to see if an l-SID has been mapped to the B-DA that matches a local l-VPLS on the node.

45. Click the exhibit.

Routers C and E are route reflectors.

When the update for prefix 192.168.2.0/24 is received at router F, what will be the Originator_ID attribute?

The router ID of router

It will not be set.

46. How is the Primary Bridge chosen in a VPLS?

The PE devices participating in the VPLS mesh run a separate Spanning Tree instance in the Core. The Primary Bridge is the Root Bridge for the VPLS mesh.

The PE devices participating in the VPLS mesh determine which bridge is closest to Root Bridge. This bridge becomes the Primary Bridge.

The PE devices participating in the VPLS mesh determine which bridge has the lowest bridge-id. This bridge becomes the Primary Bridge.

The PE devices participating in the VPLS mesh determine which bridge is the Root Bridge. This becomes the Primary Bridge.

47. When spanning tree is enabled within a VPLS service and the STP mode is 802.1 D 2004 what happens if a PVST BPDU is received on a SAP?

Spanning tree will be disabled on the SAP that the PVST BPDU was received on.

The SAP that the PVST BPDU was received on will be disabled to prevent loops.

The spanning tree encapsulation will be dynamically changed to PVST on the SAP the PVST BPDU was received on.

The PVST BPDU will be ignored and 802.1D 2004 BPDUs will continue to be transmitted on the SA

48. It is necessary for Tier 1 schedulers to obtain bandwidth from a higher tier scheduler.

TRUE

FALSE

49. Why is it best practice to set the bridge priority in an STP network? (Choose 2)

This is not a best practice. Any switch can be used as the root bridge.

So that you know which links will be active in your network.

To prevent a new switch from becoming root when added to the network.

To allow all ports on the root switch to become alternate ports.

50. In which of the following scenarios is self-generated traffic QoS (sgt-QoS) useful?

EXP markings on transit control traffic are not set correctly.

The priority of all self-generated traffic needs to be lowered to allow all other traffic to take precedence.

The priority of various control packets requires special treatment throughout the network.

The BGP process is consuming too many CPU cycles and is impacting OSPF performance.

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51. Which of the following statements is FALSE when providing Internet access using route leaking between a VRF and the global routing table?

It is best used when a single VPN is required to provide Internet access, as well as to maintain VPN connectivity between different customer sites.

If there is no requirement for the VRF to contain the full Internet routing table, a default route to the Internet gateway router is sufficient.

Only one interface on the CE is required for both VPN and Internet connectivity.

The Nokia 7750 SR supports route leaking in full mesh and extranet VPRN topologies only.

52. Which of the following statements about standalone pokers and CFHP policers is FALSE?

A standalone policer has no parent arbiter, while a CFHP pohlicer has a parent arbiter.

A standalone policer has a fixed PIR rate, while a CFHP poker's PIR rate can be dynamically adjusted by its parent arbiter.

Both standalone and CFHP policers use the FIR bucket to gain access to their fair share of the available bandwidth.

Both standalone and CFHP policers use a policer output queue to store packets before they are forwarded.

53. Click on the exhibit below.

How many LSPs are required in total between Metro A and Metro B if 100 hierarchical VPLS services are deployed across the two metro networks?

100

200

54. Which of the following is TRUE if the local state of BGP is OpenConfirm?

The local system has received a Keepalive message and is ready to exchange updates.

The local system is exchanging Update messages with its neighbor.

The local system has sent a Keepalive message to its neighbor and is waiting to receive one back.

The local system has sent an Open message to its neighbor and is waiting to receive one back.

55. Which of the following statements regarding BGP control plane convergence is FALSE?

Core and edge node failure recovery depends on IGP convergence.

Edge neighbor failure is detected by the eBGP session timeout.

BGP control plane convergence is independent of number of affected prefixes.

Upon BGP control plane convergence, an optimal path is installed in the FI

56. Consider a large metro-to-metro VPLS network interconnected with a mesh of mesh-SDPs.

Which of the following statements does NOT apply to this situation?

Bandwidth and replication inefficiency can occur on inter-metro links if there is a lot of multicast traffic

The number of control sessions grows exponentially in a fully meshed network.

Spanning-tree is required to prevent loops when using mesh SDPs on the inter-metro links.

Network touches increase with each node added to the mesh.

57. WRED can be used to help avoid TCP slow-start synch problems.

TRUE

FALSE

58. Click the exhibit.

For the inter-AS model B VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1?

PE2 pushes one label on the IP packet and forwards it to ASBR2.

ASBR2 forwards the IP packet with one label to ASBR1.

ASBR1 forwards the IP packet with two labels to PEL

PE1 forwards an unlabeled IP packet to CE1.

59. What is the purpose of configuring a triggered-policy on an Alcatel-Lucent 7750 SR?

Policy changes are delayed until the peer router with the affected routes reboots.

Policy changes are delayed until route updates for affected BGP routes are received from peers.

Policy changes are delayed until BGP sessions are cleared or BGP is reset.

Policy changes are delayed until the router reboots.

60. Which of the following entities can scheduler policies be applied to? (Choose two)

Network ingress port

Epipe ingress SAP

ES egress SAP

Ingress MDA

VPRN ingress interface

Shared buffer space

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61. Click the exhibit.

The displayed output is from an ASBR supporting an inter-AS model A VPRN.

Which of the following statements about this output is TRUE?

The neighbor shown is an ASBR router.

The address family between the peers should be VPN-IPv4 instead of IPv4.

The neighbor address cannot be the interface address 10.3.4.4.

The omitted AS number under "BGP summary" must be equal to 64496.

62. Which of the following is NOT a benefit of using a spoke SDP in an H-VPLS design?

Simplifies signaling.

Reduces core's forwarding database size.

Simplifies MDU configuration.

Enables a scalable inter-domain solution.

63. Which of the following rate-limiting approaches are used on the Alcatel-Lucent 7750 SR? (Choose two)

Shapeless policing at SAP-ingress only.

Shapeless policing at SAP-ingress and egress.

Biased round robin queuing at ingress only.

Soft shaping at all network interfaces.

Soft shaping at network ingress only.

64. What type of SDP cannot be configured in an l-VPLS?

Mesh-sdp

Spoke-sdp

MPLS

GRE

65. In a VPRN the PE device is configured to run which of the following protocols? (Choose three.)

MP-BGP for exchanging customer routes with other PEs

A routing protocol for exchanging customer routes with the CE

MPLS for exchanging labels with other provider core devices

MPLS for exchanging labels with the CE devices

Targeted LDP for exchanging VPRN labels with other PE devices

A label signaling protocol for defining transport tunnels between PE and CE devices

66. Click the exhibit.

Which of the following is a valid confederation configuration for Router R2?

Option A

Option B

Option C

Option D

67. Click the exhibit button below.

A network operator has configured a network-queue policy to map forwarding classes to queues, as shown in the exhibit below.

Based on the default scheduling behavior of the Alcatel-Lucent 7750 SR, in which order will packets be serviced?

All in-profile packets in round-robin, then all out-of-profile packets in biased round-robin.

In-profile EF packets, then in-profile H2 packets, then in-profile AF packets, then out-of-profile EF packets, then out-of-profile H2 and AF packets, and then out-of-profile BE packets.

In-profile EF, H2 and AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

In-profile EF packets, then in-profile H2 and AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

In-profile EF and H2 packets, then in-profile AF packets, then out-of-profile H2, AF and BE packets in biased round-robin.

68. Click the exhibit.

Given the following configuration for router R1, what is the expected Next Hop for prefix 192.168.1.0/27 as seen on router R2?

10.0.2.1

10.0.2.2

10.16.10.1

10.16.10.3

69. If the max remote-age timer of a B-VPLS is reached, what happens to the remotely learned MAC addresses in the l-VPLS service?

There is no effect. The MAC addresses for the l-VPLS age out independently of the aging of B-VPLS addresses.

The MAC addresses for the l-VPLS will age out immediately following the remote-age out of the backbone-macs of the B-VPL

By default, the remote-age timer of the B-VPLS is configured to 0 and addresses do not age out. The l-VPLS uses its own timer.

The same timer is used for B-VPLS and l-VPLS addresses on the node.

70. Click the exhibit.

The headquarter sites of VPRN 10 and VPRN 20 are part of an extranet VPRN.

Which route targets should be exported under the VPRN 20 service on router R1?

target: 65100:2 and target: 65100:3

target: 65100:1 and target: 65100:2

target: 65100:1 and target: 65100:3

target: 65100:1, target: 65100:2 and target: 65100:3

Page 8 of 20

71. Click on the exhibit below.

Management VPLS 100 has been created for redundant spoke-SDP connections. User VPLSs 10 and 20 are using the same spoke-SDPs that are being managed by VPLS 100. Unexpected behavior has been reported.

Based on the following output, what is the most likely reason for the unexpected behavior?

VPLS 100 was not actually configured as a management VPL

VPLS 10 and VPLS 20 are not actually configured as a user VPL

VPLS 10 and VPLS 20 are not using the same spoke-sdps that the management VPLS is using.

Based on the output there is now way of telling if there is a problem with the configuration.

72. When a routing protocol is configured as the PE-CE protocol at one site of a customer VPRN, the same routing protocol must be configured as the PE-CE protocol at all other sites of the same customer VPRN.

True

False

73. In a VPRN, which of the following are supported as PE-CE routing methods on the Alcatel-Lucent 7750 SR? (Choose four).

Static

RIP

OSPF

IS-IS

MP-BGP

BGP

74. Which of the following statements are TRUE regarding the PE device in a QoS enabled network? (Choose two)

A device that provides no differentiation between customer traffic flows.

A device that classifies and marks customer traffic.

A device that uses MPLS EXP bits to differentiate between traffic flows.

A device that creates macroflows towards the core from multiple customer sites.

A device that passes macroflows while optionally changing QoS markings.

75. Which of the following is considered a best practice for BGP address planning?

Advertising external networks into IG

Using system addresses for setting up iBGP sessions.

Exporting the networks associated with the external links of eBGP peers into BG

Optimizing BGP route table by exporting IGP routes into BG

76. What are the benefits of a hierarchical VPLS architecture? (Choose 3)

Increases scalability

Reduces the FDB size within a VPLS instance

Reduces replication and bandwidth utilization from the MDU device to the core network

Easier to manage

Reduces the routing table size

77. Click the exhibit.

Assuming that none of the routers within AS 65200 is configured with next-hop-self", what will the BGP update for the 192.168.0.1/27 prefix contain when it arrives at router B?

AS Path of 65200 65100, Next Hop of router

AS Path of 65100, Next Hop of router

78. What is the default Spanning Tree protocol used in a VPLS on the Alcatel-Lucent 7750 SR?

802.1D2004

802.1D 1998

comp-dot1w

PVST

79. What is the default fdb size for a VPLS service?

100

250

80. Which of the following parameters does NOT have to match for an iBGP session to be successfully established?

BGP version number.

The local AS number.

The Hold Time.

Authentication.

Page 9 of 20

81. What are the well-known mandatory BGP attributes?

Origin, Next Hop and Local Preference.

Local preference, AS Path and Next Hop.

Aggregator, Next Hop and AS Path.

AS Path, Next Hop and Origin.

82. H-VPLS solves the data-plane and control-plane problems with the exception of one issue.

What is the concern that H-VPLS does not solve?

Increased LSP count.

Number of TLDP sessions.

The amount of network touches.

FDB consumption.

Increased bandwidth and replication.

83. Click on the exhibit below.

If the SDP between R2 and R1 goes down, what devices will be reachable from R2 through the VPLS?

Only R4 will be reachable through the VPL

All devices will be reachable through the VPL

R4 and R3 will remain reachable.

No devices will be reachable.

84. Which of the following describes the goal of an Extranet VPRN?

To reduce the number of VPRN tunnels required.

To allow routes to be exchanged between all, or selected, sites of one VPRN, and all, or selected, sites of a second VPR

To simplify the administration of multiple VPRNs.

To allow network access between the headquarter sites of each VPRN service and a shared VPRN service offered by a third party.

85. Which of the following statements describe the operation of WRED on the Alcatel-Lucent 7750 SR? (Choose three)

WRED monitors the shared buffer space utilization over a period of time.

WRED disables the TCP slow-start congestion control mechanism.

WRED uses two configurable slopes for each buffer pool: a high slope and a low slope.

WRED uses the shared buffer utilization, instead of the individual queue depth, to get a better picture of the average resource utilization of the shared buffer space.

WRED polices the shared buffer pool and marks all packets above a certain rate as "discard eligible."

86. The service mtu of a VPLS is set to 9100.

What is the recommended MTU value that can be set for the access port assuming dot1q encapsulation?

9100

9104

9108

9122

9126

87. Which of the following prefix lists include prefixes 192.168.128.0/17 and 192.168.64.0/18?

Prefix list 192.168.0.0/16 through 18.

Prefix 192.168.0.0/17 longer.

Prefix list 192.168.0.0/17 through 18.

Prefix 192.160.0.0/13 longer.

88. How is the aggregator attribute handled with 32-bit AS numbers?

With the same method and attribute as 16-bit AS numbers.

With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

Aggregation is not yet supported with 32-bit AS numbers.

By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTL

89. Which of the following organizations would an ISP based in Europe approach for an IP prefix assignment?

ARIN

ICANN

RIPE NCC

LACNIC

APNIC

90. Which of the following commands may be used on an Alcatel-Lucent 7750 SR to display a network exported locally to BGP on the originating router? (Choose two)

Show router bgp routes

Show router bgp routes prefix <prefix>

Show router bgp routes <prefix> self-originated

Show router bgp routes <prefix> hunt

Show router bgp neighbor <neighbor ip> advertised-routes

Page 10 of 20

91. Click the exhibit.

After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be propagated to?

All routers with which it has a BGP session.

All routers with which it has a BGP session, except the router it received the update from, which is router

Only eBGP neighbors.

92. Which of the following are trusted boundaries, by default? (Choose two)

An IES SAP

A VPLS SAP

A network port

AVPRN SAP

An access port

93. How is MAC learning achieved in traditional Ethernet switches?

As frames leave the switch, the DA is populated into the FD

As frames enter the switch, the DA is populated into the FD

As frames leave the switch, the SA is populated into the FD

As frames enter the switch, the SA is populated into the FD

94. Packets arrive at the VPRN SAP on PE1 with DSCP marking of all.

According to the QoS policies applied at routers PE1, P, and PE2, what is the DSCP value of packets egressing router PE2? (All the SDPs are MPLS-encapsulated, and all interfaces are using their default trust states).

af11

af12

af31

af33

95. What is the maximum number of forwarding subclasses a forwarding class can have?

96. Click on the exhibit below.

A new router named PE-D is to be directly connected to PE-C and is required to be added to the existing VPLS 300. The design requires the least amount of signaling, the least amount of configuration changes for existing sites and the new site has to have access to all existing sites.

How should the new site be added to VPLS 300?

Configure a mesh-sdp between all existing PE routers and the new PE router

Configure a mesh-sdp between PE-C and PE-D

Configure a spoke-sdp between PE-C and PE-

It is not possible to meet the design requirements.

97. It is required to prepare the provider core for LDP on an Alcatel-Lucent 7750 SR.

Based on the configuration shown below, choose the answer that best describes the given configuration.

This configuration is correct and complete

This configuration is correct except that the system interface must be added

This configuration is correct except that the interfaces facing the CE routers must be added.

MPLS configuration is not required

98. Click on the exhibit below.

Study the network diagram.

Which of the following configurations is correct for user VPLS 100 on PE4?

Option A

Option B

Option C

Option E

99. Which of the following is a feature of LDP VPLS?

Service labels are assigned based used on label blocks.

BGP-AD, RADIUS and Management are used for auto-discovery.

Service labels are signaled using MP-BG

Hierarchical VPLS is loosely defined in the standards.

100. What is the purpose of the Nokia SR design that includes, for every ingress unicast queue, one hardware queue per destination forwarding complex (FFPC)?

To utilize memory resources efficiently

To avoid Head of Line blocking

To achieve more granularity of QoS control

To make hierarchical scheduling/policing possible

Page 11 of 20

101. Click the exhibit.

If the displayed command is executed, what is the correct value of AS-Path in the BGP route 172.12.0.0/16 advertised by PE2?

64491 {64492 64493}

64491

64492 64493 64491

{64492 64493)64491

102. Which of the following fields can be marked or remarked for frames belonging to a Layer 2 service?

DSCP

PREC

Dot1p

ToS

Q-in-Q

103. Click the exhibit.

Assume all router-IDs are properly configured.

Which of the following configurations is required on the Alcatel-Lucent 7750 SR router A to establish an IPv6 BGP session to router D?

Option A

Option B

Option C

Option D

104. AVPLS spoke SDP is terminated on a VPRN service. The remote side of the spoke SDP is operationally * Down' with a flag of ' Service MTU Mismatch'.

Which command can you use on an Alcatel-Lucent 7750 SR to show the signaled operational VC-MTU?

show service id <service-id> base

show router Idp bindings

show service id <service-id> sdp detail

show service id <service-id> vc-mtu

105. Which of the following is an advantage of using shaping instead of policing?

Shaping does not add latency.

Shaping does not add jitter.

Shaping protects downstream nodes from traffic bursts.

Shaping requires less memory to buffer packets.

106. Which of the following statements regarding BGP route selection is TRUE?

Lower local preference is preferred over higher local preference.

Higher MED is preferred over lower ME

Higher origin code is preferred over lower origin code.

Lower BGP router ID is preferred over higher BGP router I

107. Which single command will verify the state of auto-bind, the configured Route Distinguisher and Route Target, in addition to the SAP and SDP bindings for a particular service on an Alcatel-Lucent 7750 SR?

Show service all

Show service id <service-id> detail

Show service id <service-id> base

Show service id <service-id> bindings

Show service sap-using

108. Which of the following VPRN label allocation methods are supported by the Alcatel-Lucent 7750 SR?

One label per VRF per route

One label per VRF per next-hop

One label per VRF

All of the above

A and C

B and C

109. Click the exhibit.

Assuming a full iBGP mesh in ISP 1, how does router R1 in ISP 1 handle a BGP update received from ISP 2?

The update is sent to router R2 in ISP 1.

The update is sent to routers R2 and R3 in ISP 1.

The update is sent to all routers in ISP 1.

The update is sent to routers R2 and R3 in ISP 1, and to router R3 in ISP 2.

110. Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider.

If CE1 sends an IP packet to 192.168.200.1, which of the following is FALSE?

PE1 pushes a VPN label, a BGP label, and an LDP transport label on the IP packet.

CSC-CE1 pops the LDP label and swaps the BGP label.

CSC-PE1 pops the BGP label, swaps the VPN label, and pushes an LDP transport label.

CSC-PE2 pops the LDP and VPN labels and pushes a BGP label.

Page 12 of 20

111. Which of the following about the control plane in Carrier Supporting Carrier (CSC) VPRN is FALSE?

End-customer routes are populated in the network provider CSC VR

The customer carrier does not learn any network provider internal routes.

The network provider learns customer carrier PE system addresses.

Routes exchanged between the customer carrier and the network provider are labeled.

112. When using an egress port scheduler, on which scheduling loop are orphaned queues serviced?

Level 8 within CI

Level 8 between CIR and PI

Level 8, once all PIR is serviced.

Level 1 within CI

Level 1 between CIR and PI

Level 1, once all PIR is serviced.

113. Which of the following is not an available option for Route Distinguisher assignment?

One Route Distinguisher per VRF route

One Route Distinguisher per VRF

One Route Distinguisher per VRF per site

One Route Distinguisher per VPN

114. Click the exhibit.

Which of the following best describes the output from the Alcatel-Lucent 7750 SR?

RSVP-TE has signaled a VPRN label.

RSVP-TE has signaled both VPRN and LSP labels.

MP-BGP has signaled both VPRN and LSP labels.

MP-BGP has signaled a VPRN label.

115. Router R1, in AS 65540, has the export policy shown below. It advertises an aggregate route to eBGP peer router R2 in 65550.

What is the AS Path of the aggregate route received by router R2?

65540

65540 1

65540 65540

65550 65540

116. Click the exhibit.

For the inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from 192.1.1.1 to 192.2.1.1?

PE1 pushes two labels on the IP packet and forwards it to ASBR1.

ASBR1 pops the LDP label, swaps the BGP label and forwards the IP packet to ASBR2.

ASBR2 forwards the IP packet with two labels to PE2.

PE2 pops the labels and forwards the unlabeled IP packet to its destination.

117. Which of the following OAM tools can be used as a VPLS topology discovery mechanism (Choose 2)?

oam mac-ping

oam mac-populate

oamsvc-ping

oam mac-trace

118. Click the exhibit button below.

Given the SAP-ingress policy, which of the following statements are FALSE? (Choose three)

Queue 5 is using priority mode.

UDP traffic can be serviced at a maximum rate of 20 Mbps.

Ping traffic is place in queue 5.

Queues 5 and 6 will receive equal portions of any remaining available bandwidth to meet their above-CIR bandwidth requirements.

Queue 3 is scheduled before queue 5.

119. When deploying Active/Standby pseudo wires, the CE does not require any special configuration

TRUE

FALSE

120. An advantage of using BGP as the PE-CE protocol is that route policies are no longer required to control the exchange of routes from BGP to MP-BGP.

True

False

Page 13 of 20

121. Which of the following features can be enabled to eliminate MAC instability when using policy-based forwarding to redirect traffic to a Layer 2 DPI device?

discard-unknown

mac-move

disable-learning

enable-mac-stability

122. Which of the following best describes the difference between VPWS and VPLS?

Unlike VPL

VPWS appears as a multi-hop network to the customers.

Unlike VPLS, VPWS allows CEs that are member of the same service instance to communicate with each other as if they are connected via a bridged LA

Unlike VPWS, VPLS allows customers to view the network as a routed network.

Unlike VPWS, VPLS is a service where customer MAC addresses are learned.

123. When deploying an Alcatel-Lucent MPLS network with QoS, how are the EXP bits set?

The first 3 bits of the DSCP value are copied directly into the EXP field on the first network egress.

The EXP bits are set on the first network egress, based on a combination of the SAP-ingress classification and the network policy applied.

The 3 priority bits are copied directly from the dot1p header into the EXP field of the first MPLS header.

The EXP bits are set based on a default map that translates DSCP codes into internal forwarding classes on SAP-ingress.

124. Which of the following devices would typically have VRF instances?

Any CE device

Any PE device

Any P device

Any router in the service provider core

Any customer router

125. Click the exhibit.

For the inter-AS model C VPRN, how many labels does PE1 push on a data packet received from CE1 and destined to CE2?

126. Which of the following statements regarding buffer pool allocation are FALSE? (Choose two)

Each network egress port receives its own buffer pool.

Each SAP-egress port receives its own buffer pool.

All SAP-ingress ports on the same MDA share a buffer pool.

All the network ingress ports on the same MDA share a buffer pool.

Each network ingress port on the same MDA receives its own buffer pool.

127. On an Alcatel-Lucent 7750 SR, which CLI command displays the Route Target(s) associated to a prefix?

Show router bgp routes

Show router route-table summary

Show router bgp routes vpn-ipv4 detail

Show router route-table

128. Which of the following about a full mesh VPRN design is FALSE?

Each customer site has a logically direct route to every other customer site.

It provides optimal routing between all sites.

It allows access between all CE devices and all sites participating in the same VR

It requires a full BGP mesh in the provider core.

129. Which of the following BEST describes a SAP when regarding QoS?

A point in the network where EXP bits can be mapped to one of eight predefined FCs, each one with its own queue.

A logical point in a service tunnel where all of customer traffic is aggregated.

A point at which the initial classification of customer traffic occurs.

A point in the network where QoS parameters are discarded in favor of lower-level hardware queuing functions, such as LLI (Link Layer Interleave).

A point in the network where traffic flows from multiple different services are queued together, based on forwarding class.

130. Which of the following statements is true?

Filter Policies can only be applied on egress.

An IP filter can be applied on ingress at the same time a MAC filter is applied on the egress of the SA

Filter Policies can be based on IP, MAC, and VPI/VCI addresses.

Any number of ingress and egress filter policies can be associated with a SA

An IP filter and a MAC filter can be applied on the ingress SAP at the same time.

None of the above.

Page 14 of 20

131. Click on the exhibit below.

Assume a CE router is connected to the SAP of each PE. The arp cache of all CE routers is empty and the FDB for VPLS 300 is empty. The CE router connected to PE-A initiates a ping towards the CE router connected to PE-C. The ping is successful.

Which of the following statements are true? (Choose 2)

The FDB on PE-A will contain entries for all CE routers.

The FDB on PE-B will contain an entry for the CE router connected to PE-

The FDB on PE-B will contain an entry for all CE routers.

The FDB on PE-C will contain entries for the CE router connected to PE-A and the CE router connected to PE-

132. A customer has requested a VPLS service. The customer is using dot1q encapsulation and they have requested that all vlan tags be transparently passed.

Which two SAP IDs will accept VLAN tags and pass them transparently? (Choose 2)

sap 1/1/1

sap 1/1/1:0*

sap 1/1/1:0

sap 1/1/1:*

133. In IEEE 802.1ag, which two key functions are configured on bridge ports (SAPs and SDPs)

to support CFM messages? (Choose 2)

MEP

MAP

MIP

MUP

134. Which of the following are required for an operational mesh-sdp binding for bidirectional traffic when signaling is enabled within the SDP? (Choose 3)

LDP must be enabled.

RSVP must be enabled.

An SDP must be configured on the far-end.

Service MTU must match.

SDP ID must match.

135. For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is an ISP that provides Internet connectivity to its end-customers, which of the following is TRUE?

The customer carrier network must be MPLS-enabled.

VPRN instances are created on the CSC-CE routers.

All traffic exchanged between end-customers is carried over a single CSC VR

Customer carrier PEs residing in different sites must run MP-iBGP between them to exchange customers' routes.

136. An Alcatel-Lucent 7750 SR is configured with a policy to export directly-connected networks to BGP.

Which of the following commands verifies that the export was successful?

show router route-table

show router bgp routes

show router bgp routes <prefix> hunt

show router bgp neighbor <ip-address> received-routes

137. What action will be taken when an Ethernet switch receives a frame with a known DA and an outer Ether type value of 0x0800 on a dot1q encapsulated port?

The frame will be forwarded out the port associated with the D

The frame will be discarded.

The frame will be flooded to all ports.

The frame will be fragmented and forwarded out the port associated with the D

138. A customer has two sites connected to PE-1 and a third site dual-homed to PE-2 and PE-3.

If BGP is used as the PE-CE protocol, what is the total number of BGP and MP-BGP sessions required on PE-1 for a functional VPRN service? Assume that route reflection is not used.

0 BGP and 2 MP-BGP sessions

2 BGP and 0 MP-BGP sessions

2 BGP and 1 MP-BGP sessions

2 BGP and 2 MP-BGP sessions

1 BGP and 2 MP-BGP sessions

139. Click on the exhibit below.

Assume PE-B expects avian tag as part of the RFC 4762 (Martini) encapsulation.

How must PE-A be configured?

The port that the SAP belongs to must have the correct ether type configured.

The SAP must be configured with the right VLAN tag.

The SDP VC type must be configured as type VLAN and the correct vlan-vc-tag must be specified.

All of the above.

140. Click the exhibit button below.

At router PE1, customer packets are arriving tagged with a dotlp value of 6 and marked with a DSCP value of EF.

Based on the configuration shown below for a VPLS service, what will be the DSCP and EXP marking for the packet egressing the network port on this PE router? (Choose two)

The DSCP value will be set to af21.

The DSCP value will be set to af23.

The DSCP value will remain as ef.

The EXP value, in the MPLS headers, will be set to 4.

The EXP value, in the MPLS headers, will be set to 3.

Page 15 of 20

141. Click on the exhibit below.

Assume there are two VPLS services configured on the MDU.

How could load-balancing be achieved when using Active/Standby pseudo wires?

This cannot be done.

Each VPLS will use the same pair of SDP's with the same endpoint configured with the option "load-balancing 2".

Each VPLS will need their own pair of spoke-SDP's configured. The spoke-sdp's that are to be active should be configured with the option "precedence primary".

Under the end-point configuration, enable load-balancing 2 and the MDU will load balance automatically.

142. In RSTP, which state do all ports initialize in?

Designated

Discarding

Listening

Root

Forwarding

143. When configuring BGP as the PE-CE protocol on an Alcatel-Lucent 7750 SR, the configuration on the CE is done under the ____________ context and the PE configuration is under the ____________ context.

Global, router

Router, router

Service, router

Router, service

Service, service

Router, global

144. Click the exhibit.

Routers RR1 and RR2 are configured as route reflectors.

For the inter-AS model C VPRN, which of the following about the BGP sessions established between the routers is TRUE?

ASBR2 has a total of three BGP sessions established: one with PE2, one with RR2, and one with ASBR1.

RR1 has a total of three BGP sessions established: one with PEL one with RR2, and one with ASBRL

PE2 has a total of two BGP sessions established: one with RR2 and one with ASBR2.

PE1 has a total of two BGP sessions established: one with RR1 and one with PE2.

145. BGP is configured on two peers, routers A and

B. Router A is configured with a Hold Time timer of 60 seconds and a Keepalive timer of 25 seconds. Router B is configured with a Hold Time timer of 90 seconds and a Keepalive timer of 70 seconds.

What will the active Keepalive timer be on router B?

70 seconds

25 seconds

20 seconds

30 seconds

146. Which of the following statements about Spanning Tree Protocol is true?

The switch with the lowest priority becomes the root.

The switch with the highest priority becomes the root.

The switch with the lowest MAC address always becomes the root.

The switch with the highest MAC address always becomes the root.

147. An Alcatel-Lucent 7750 SR has the BGP configuration shown below.

Assuming the router has established BGP sessions to routers R1 and R2, which of the following is TRUE?

Both neighbors R1and R2 should be part of AS 65540.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65540.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65560.

Both neighbors R1and R2 should be part of AS 65560.

148. When using the AS-override method to prevent BGP loops in VPRNs, where should the "as-override" CLI command be configured?

On the PE facing the CE neighbor

On the CE facing the PE neighbor

On the P facing the PE neighbor

On the PE facing the PE neighbor

149. Click the exhibit.

Configuring labeled eBGP sessions between CSC-CE and CSC-PE routers.

Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

Configuring labeled iBGP sessions between PEs residing in different customer carrier sites.

Advertising the received system addresses of remote PEs using either iBGP or IGP/LDP within each customer carrier site.

150. Which of the following prefix-lists is the most specific match for prefix 172.31.2.1/24?

Prefix 172.16.0.0/12 longer.

Prefix 172.31.0.0/22 longer.

Prefix 172.31.0.0/23 longer.

Prefix 172.31.0.0/24 exact.

Page 16 of 20

151. Which of the following statements regarding scheduling are TRUE? (Choose two)

Scheduler policies cannot be children of an egress port-scheduler.

HQoS provides a static method of allocating scheduling resources to each queue and/or child.

Scheduler policies can be applied to the MDA to schedule network ingress traffic.

Every time a scheduler-policy is assigned to a SAP, a new hardware scheduler is created to service the SA

A scheduler applied to multiple SAPs within the same service will result in a single hardware scheduler operating across all SAPs within the service.

152. Click the exhibit.

For the inter-AS model A VPRN shown, which of the following about the route advertisement of 192.168.1.0/27 is FALSE?

PE1 advertises 64496:1:192.168.1.0/27 route update to ASBR1.

PE2 advertises 192.168.1.0/27 route update to CE2.

ASBR1 advertises 64496:1:192.168.1.0/27 route update to ASBR2.

ASBR2 advertises 64497:1:192.168.1.0/27 route update to PE2.

153. Why are provisioning requirements a factor that influence VPLS design? (Choose 2)

Adding or removing a node may require several network touches.

Adding or removing a SAP may require several network touches.

Adding or removing a service may require several network touches.

Adding or removing an Epipe may require several network touches.

Provisioning is a factor for all Ethernet services.

154. Based on queue usage, which of the following QoS-policies when combined will allow queue rates to be dynamically allocated? (Choose two)

The slope-policy

The SAP-ingress policy

The network-queue policy

The scheduler-policy

The network-policy

The WRED-policy

The arbitrator-policy

155. Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?

"client1" routes will be tagged with communities "North" and "West".

"client1" routes will be tagged with community "West".

"client1" routes will be tagged with community "North".

"client1" routes will be rejected.

156. In a Carrier Supporting Carrier (CSC) VPRN, which of the following is a benefit to the customer carrier?

The ability to offer Internet connectivity and a variety of services over a single CSC VPRN interface.

The ability to maintain its own backbone.

The ability to learn system addresses of network provider PEs.

There is no need to manage end-customer services.

157. Click the exhibit.

AS 65540 routers are iBGP fully-meshed. Assume routers R4, R5 and R6 are configured with add paths ipv4 send 2 receive".

Which routes to 192.168.0.1/27 is router R6 expected to have in its BGP routing table?

Two routes from router R4.

Two routes from router R5.

Two routes; one from router R4 and one from router R5.

Four routes; two from router R4 and two from router R5.

158. Which of the following are possible criteria for classifying packets at the network port ingress on the Alcatel-Lucent 7750 SR? (Choose three)

The EXP bits in the MPLS header.

The packet's source and destination IP addresses.

The packet's DSCP bits.

The dot1p bits in the frame header.

The ID of an SDP that is transporting the packet.

159. In Rapid Spanning Tree Protocol, a Backup Port is on the same switch as a Designated Port?

TRUE

FALSE

160. Why is a full mesh of iBGP peers required?

To ensure proper route propagation inside a transit A

To ensure that all routers are directly connected.

To ensure that all routers run iBGP inside a transit A

To maximize control plane scalability.

Page 17 of 20

161. Click the exhibit.

An Alcatel-Lucent 7750 SR is to be configured as a core router that supports VPRNs using LDP as the transport protocol.

Which of the following best describes this configuration?

This configuration is correct and complete.

This configuration is correct, but the interfaces must also be configured in the "configure router mpls" context.

There is no configuration required for LDP in the core network.

This configuration is correct but Targeted-LDP is also required.

162. Click the exhibit button below.

Each router is interconnected by a single GigE link, as shown in the diagram below. Note: The arrows show the direction of traffic flow.

Traffic from Customer A and Customer B that is classified to the same forwarding class is queued together at the ingress of Router B.

True

False

163. Which command will display the Route Target associated to a specific prefix on an Alcatel-Lucent 7750 SR?

Show router bgp routes

Show router bgp routes <prefix> detail

Show router route-table

Show router <service-id> route-table

Either (b) or (d)

164. A network port using null encapsulation has a MTU of 1514 bytes.

When MPLS transport is used without FRR, what is the maximum service MTU of a VPLS using that port?

1536

1514

14%

1492

1488

165. How are policy direction and data flow related on the Alcatel-Lucent 7750 SR?

Import policies affect ingress data flow.

Export policies affect ingress data flow.

Both import and export policies affect ingress data flow.

Policy direction and data flow are independent.

166. A packet is to be encapsulated inside an MPLS tunnel which consists of two MPLS headers at the first network egress.

Which of the MPLS EXP fields will be marked?

The EXP field in the bottom MPLS header will be marked.

The EXP field in both the top and bottom MPLS headers will be marked.

For Layer 2 services, the top MPLS header will be marked; for Layer 3 services, the bottom MPLS header will be marked.

The EXP field in the top MPLS header will be marked.

Neither the top nor the bottom EXP field will be marked since EXP remarking can only be done on the network ingress.

167. To manage the shared buffer space at network ports, slope policies are applied on _________ for the ingress direction, and on ________ or _________ for the egress direction.

Interfaces, ports, SAPs

Ports, ports, MDAs

MDAs, MDAs, ports

Interfaces, interfaces. MDAs

MDAs, ports, interfaces

168. Which of the following about BGP loops in a VPRN environment is FALSE?

Traditional BGP loop detection mechanisms may detect a loop in the VPRN scenario, which in fact is not present.

The Alcatel-Lucent 7750 SR accepts routes containing AS_PATH loops by default.

When the CLI command "config>router>bgp# loop-detect discard-route" is used, the Alcatel-Lucent 7750 SR sends a notification to the remote peer and drops the BGP session.

In VPRN implementations where the CE-PE protocol is BGP, it is possible for separate sites of the same customer to use the same BGP autonomous system number.

169. Which of the following about BGP Site of Origin (SoO) is FALSE?

The SoO attribute can be used to uniquely identify the site from which a PE learns routes.

Before a PE redistributes a VPN-IPv4 route, it can assign an SoO attribute to the route.

The SoO attribute can be used to prevent loops from a single site with multiple CE-PE connections.

The SoO attribute can be used as matching criteria when redistributing routes from the CE to the P

170. Which of the following statements regarding the default scheduler in the Alcatel-Lucent 7750 SR are TRUE? (Choose two)

There are a maximum of 8 levels of priority serviced using a round-robin algorithm.

The default scheduler will spend an equal amount of time in each queue, as long as there is traffic present

The H1 internal forwarding class will receive its CIR before AF traffic.

Orphaned queues will be scheduled out of the BE queue.

A queue servicing EF and AF traffic will require explicit configuration to set the queue to expedited.

Page 18 of 20

171. Which protocol is used to signal the status of the active links between the PE and the CE in MC-LAG?

MSTP

MCLAG

LACP

DHCP

A proprietary protocol

172. Which of the following statements are TRUE regarding the remarking of packets arriving on the network interface whose ToS-marking-state is set to trusted and remarking enabled on network egress? (Choose two)

Native IP Packets will not be remarked.

Native IP Packets will be remarked.

Packets associated with a VPRN service on an upstream node will not be remarked.

Packets associated with an ES service on an upstream node will be remarked.

173. Complete the following statement. In a VPRN, the label signaled by RSVP-TE is used to ______________.

Identify the egress PE in the MPLS domain

Signal the egress VPRN ID

Identify the ingress PE in the MPLS domain

Transport route updates between PEs

174. Click the exhibit.

For the extranet VPRN and community lists shown, which of the following communities will be included in the export policy applied to VPRN 20 on router R2?

"Blue-Only"

"Blue-Only" and "Blue-Green"

"Green-Only"

"Extranet-VPN-Green"

"Blue-Green"

175. Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP.

Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R8?

65200 (65206 65202) 65100

(65206 65202)65100

65250 (65206 65202) 65100

65200 65100

176. VPN-IPv4 addressing is made unique by defining an address structure consisting of:

A 32 bit IPv4 address followed by a 64 bit Route Target

A 32 bit IPv4 address followed by a 64 bit Route Distinguisher

A 64 bit Route Target followed by a 32 bit IPv4 address

A 64 bit Route Distinguisher followed by a 32 bit IPv4 address

A 32 bit Route Distinguisher followed by a 32 bit IPv4 address FA 32 bit Route Target followed by a 32 bit IPv4 address

177. Click the exhibit.

Which of the following about the inter-AS model A VPRN configuration on ASBR1 is TRUE?

The route-distinguisher value must be 64496:10 for successful VPRN operation.

An export policy is not required for successful VPRN operation.

The "family vpn-ipv4" command is required under the BGP configuration for successful VPRN operation.

The neighbor address should be 10.10.10.4 under the BGP configuration for successful VPRN operation.

The VPRN configuration on ASBR1 is correct.

178. Fill in the blank for this next sentence. Flooded traffic received on any ____________ in the service is replicated to other spoke SDPs and SAPs and not transmitted on any mesh SDPs.

Spoke SDP

Mesh SDP

Either (a) or (b) will make this sentence true.

Neither (a) nor (b) will make this sentence true.

179. Which of the following protocols are used for service label signaling?

Link LDP or MP-BGP

Link LDP or RSVP-TE

T-LDP or MP-BGP

T-LDP or RSVP-TE

180. 1.Click on the exhibit.

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing.

Which routers must be configured with the "configure router bgp igp-shortcuts rsvp-te" command?

Routers R6, R1, R4 and R5.

Routers R1and R4.

Routers R1, R2, R3 and R4.

Routers R2 and R3.

Page 19 of 20

181. Which of the following is NOT a feature of the IEEE 802.3ah EFM standard?

Discovery and auto-negotiation of OAM capabilities.

Link monitoring via event notifications.

Remote failure indication (RFI).

Remote Loopback

Latency and jitter across a service.

182. Click the exhibit.

Router R2 receives a route to 192.168.4.0/29 from router R4 and sets the local preference to 110. Router R1 receives the route to 192.168.4.0/29 from router R3, and sets the local preference to 80. There is a full iBGP mesh in AS 65540, but router R5 only has a physical connection to router R1.

Which path does traffic destined to 192.168.4.0/29 take from router R5?

R5-R2-R4-R8

R5-R1-R3-R4-R8

R5-R1-R2-R4-R8

R5-R1-R3-R7-R8

183. How does the IEEE 802.1ag loopback function differently from the loopback feature in 802.3ah? (Choose 2)

Theloopbackfuntionin802.1ag is an intrusive test that will stop customer data.

The loopback function of 802.lag is a non-intrusive "ping" sent from a MEP to a remote MEP or MI

The loopback function in 802.3ah is an intrusive test that will loop customer data.

The loopback function of 802.lag is an intrusive test that will "loop" all customer data back to the original sender.

184. What kind of BGP attribute is the Multi_Exit_Disc?

Optional transitive attribute.

Optional non-transitive attribute.

Well-known mandatory attribute.

Well-known discretionary attribute.

185. How many bits does DSCP use to provide QoS marking options?

186. Click the exhibit button below.

Given the slope-policy (below), which of the following statements are TRUE? (Choose two)

All out-of-profile traffic will be dropped before that of any in-profile traffic.

The discard probability slope of an in-profile traffic is steeper than that of an out-of-profile traffic.

When the shared buffer utilization reaches 55%, both in-profile and out-of-profile packets may be dropped.

The maximum probability with which an out-of-profile packet can be dropped is higher than that of an in-profile packet.

When the shared buffer utilization is at 61%, only in-profile packets are currently in the shared buffer pool.

187. Why is MAC explosion a factor to be considered when designing a large VPLS network? (Choose 2)

The time to relearn thousands of MAC addresses may result in excessive flooding or loss of packets.

If the FDB reaches the limit, the router will discard frames.

Discarding frames when the FDB limit is reached could deny SLA guarantees.

It could take several seconds to relearn thousands of MAC addresses denying QoS/SLA guarantees.

188. Click the exhibit.

Routers RR1 and RR2 are route reflectors with the same Cluster-ID.

When the update for prefix 192.168.1.0/27 is received at router RA2, what are the Originator_ID and Cluster_List attributes?

Originator_ID of RR1; and Cluster_List of 10.16.10.1.

Originator_ID of RX; and Cluster_List of 10.16.10.1.

Originator_ID of RR1; and the Cluster_List is not set.

Neither the Originator_ID nor the Cluster_List is set.

189. Click the exhibit.

Router R1 is advertising prefix 192.168.1.0/27 with community "no-export.

Which routers will receive an update for that prefix?

Router R2 only.

Routers R2 and R3 only.

Routers R2, R3 and R4 only.

Routers R2, R3, R4and R5.

190. Which of the following statements about LAGs is TRUE?

A network LAG can only connect to another network LA

All port numbers must match between LAG endpoints.

All port physical speeds must match between members of a LA

It aggregates traffic from multiple physical ports into a single virtual port.

Page 20 of 20

191. Which of the following is a function of the data plane that must be considered when provisioning a VPLS service?

Number of LSPs.

Number of TLDP sessions.

Number of SDPs.

MAC address consumption in the FD

Bandwidth and replication requirements.

192. A BGP router has loopback interfaces 192.168.1.1/27 and 192.168.2.1/27 advertised into BGP using the following export policy. The "aggregate 192.168.0.0/16" command is executed.

What is the effect of this configuration?

A single route for 192.168.0.0/16 is advertised.

BGP routes 192.168.1.0/27, 192.168.2.0/27, and 192.168.0.0/16 are advertised.

BGP routes 192.168.1.0/27 and 192.168.2.0/27 are advertised, and 192.168.0.0/16 appears as a "Blackhole" route in the route table only.

The given export policy is invalid.

Nokia SRA Composite Exam 4A0-C02 Questions and Answers

Nokia SRA Composite Exam 4A0-C02 Questions and Answers

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