New SnowPro Core Certification Exam COF-C02 Study Materials

dumps2022-10-18T08:36:59+08:00

dumps Snowflake COF-C02, COF-C02 demo, COF-C02 study materials, SnowPro Core Certification Exam 0 Comments

COF-C02 exam is available for all SnowPro Core Certification Exam candidates. The old version, COF-C01 exam was retired. No huge change, the exam difficulty of COF-C01 and COF-C02 will stay the same. Real COF-C02 exam contains 100 questions, which can be answered in 115 minutes. You can start learning the new COF-C02 study materials to make sure you can prepare well for the SnowPro Core Certification Exam. Below are the COF-C02 demo questions.

Page 1 of 8

1. True or False: When a user creates a role, they are initially assigned ownership of the role and they maintain ownership until it is transferred to another user.

True

False

2. True or False: You can define multiple columns within a clustering key on a table.

True

False

3. True or False: When active, a pipe requires a dedicated Virtual Warehouse to execute.

True

False

4. Which of the following statements is true of data loading?

Resizing the virtual warehouse from x-Small to Small will process a single file twice as fast

The "deal file size for loading is 16MB to match micro-partition size

Marry files in the 10-lOOMB range tend to land In the 'sweet spot" for load parallelism Once loaded, there is no option to force a reload of an already loaded file

5. which of the following are valid approaches to loading data into a snowflake table? select all the below that apply.

Bulk copy from an External Stage

Continuous load using Snowpipe REST API

The Snowflake Web Interface (UT) data loading wizard

Bulk copy from an Internal Stage

6. Which of the following are valid methods for authenticating users for access into Snowflake? (Select THREE)

SCIM

Federated authentication

TLS 1.2

Key-pair authentication

OAuth

OCSP authentication

7. Snowflake recommends, as a minimize, that all users with the following roles(s) should be enrolled in Multi-Factor Authentication (MFA):

SECURITYADMIN, ACCOUNTADMIN, PUBLIC, SYSADMIN

SECURITYADMIN ACCOUNTADMIN, SYSADMIN

SECURITYADMIN, ACCOUNTADMIN

ACCOUNTADMIN

8. Which of the following statement is true of Snowflake?

It was built specifically for the cloud

it was built as an on-premises solution and then potted to the cloud

It was designed as a hybrid database to allow customers to store data either on premises or in the cloud

It was built for Hadoop architecture

It's based on an Oracle Architecture

9. True or False: A third-party tool that supports standard JDBC or ODBC but has no Snowflake-specific driver will be unable to connect to Snowflake.

True

False

10. What parameter controls if the Virtual warehouse starts immediately after the CREATE WAREHOUSE statement?

INITTIALLY_SUSPENDED = TRUE/FALSE

START_AFTCR_CREATE = TRUE/FALSE

START_TTIME = 60 // (seconds from now)

STAR

TIME = CURREN

DATE()

Page 2 of 8

11. What is the minimum Snowflake edition required to create a materialized view?

Standard Edition

Enterprise Edition

Business Critical Edition

Virtual Private Snowflake Edition

12. Which type of table corresponds to a single Snowflake session?

Temporary

Translent

Provisional

Permanent

13. True or False: It is possible to query data from an Internal or named External stage without loading the data into Snowflake.

True

False

14. What are ways to create and manage data shares in Snowflake? (Select TWO)

Through the Snowflake web interface (Ul)

Through the DATA_SHARE=TRUE parameter

Through SQL commands

Through the enable__share=true parameter

Using the CREATE SHARE AS SELECT * TABLE command

15. What are the three things customers want most from their enterprise data warehouse solution? Choose 3 answers

On-premise availability

Simplicity

Open source based

Concurrency

Performance

16. True or False: Snowflake charges a premium for storing semi-structured data.

True

False

17. Which of the following statements are true about Schemas in Snowflake? (Choose two.)

A Schema may contain one or more Databases

A Database may contain one or more Schemas

A Schema is a logical grouping of Database Objects

Each Schema is contained within a Warehouse

18. What is the minimum duration charged when starting a virtual warehouse?

1 second

1 minute

1 hour

1 day

19. The number of queries that a Virtual Warehouse can concurrently process is determined by: Choose 2 answers

The complexity of each query

The CONCURRENT_QUERY_UMIT parameter set on the Snowflake account

The size of the data required for each query

The tool that s executing the query

20. On which of the following cloud platform can a Snowflake account be hosted? Choose 2 answers

Amazon Web Services

Private Virtual Cloud

Oracle Cloud

Microsoft Azure Cloud

Page 3 of 8

21. True or False: All Snowflake table types include fail-safe storage.

True

False

22. True or False: AWS Private Link provides a secure connection from the Customer’s on-premise data center to the Snowflake.

True

False

23. True or False: It is possible to unload structured data to semi-structured formats such as JSON and parquet.

True

False

24. What transformations are supported in a CREATE PIPE ... AS COPY ... FROM (....) statement? (Select TWO.)

Data can be filtered by an optional where clause

Incoming data can be joined with other tables

Columns can be reordered

Columns can be omitted

Row level access can be defined

25. What is the minimum Snowflake edition that provides data sharing?

Standard

Premier

Enterprise

Business Critical Edition

26. Which of the following connectors allow Multi-Factor Authentication (MFA) authorization when connecting? (Choose all that apply.)

JDBC

SnowSQL

Snowflake Web Interface (UI)

ODBC

Python

27. How long is Snowpipe data load history retained?

As configured in the create pipe settings

Until the pipe is dropped

64 days

14 days

28. True or False: Snowflake’s data warehouse was built from the ground up for the cloud in lieu of using an existing database or a platform, like Hadoop, as a base.

True

False

29. What happens when a Data Provider revokes privileges to a Share on an object in their source database?

The object immediately becomes unavailable for all Data Consumers

Any additional data arriving after this point in time will not be visible to Data Consumers

The Data Consumers stop seeing data updates and become responsible for storage charges for the object

A static copy of the object at the time the privilege was revoked is created In the Data Consumers' accounts

30. Which of the following connectors are available in the Downloads section of the Snowflake web Interface (UI) Choose 2 answers

SnowSQL

ODBC

HIVE

Page 4 of 8

31. What privileges are required to create a task?

The global privilege create task is required to create a new task.

Tasks are created at the Application level and can only be created by the Account Admin role.

Many Snowflake DDLs are metadata operations only, and create task DDL can be executed without virtual warehouse requirement or task specific grants.

The role must have access to the target schema and the create task privilege on the schema itself.

32. Which data types does Snowflake support when querying semi-structured data? (Select TWO)

VARIANT

ARRAY

VARCHAR

XML

BLOB

33. Which of the following statements describes a benefit of Snowflake’s separation of compute and storage? (Choose all that apply.)

Growth of storage and compute are tightly coupled together

Storage expands without the requirement to add more compute

Compute can be scaled up or down without the requirement to add more storage

Multiple compute clusters can access stored data without contention

34. What feature can be used to reorganize a very large table on one or more columns?

Micro-partitions

Clustering keys

Key partitions

Clustered partitions

35. What are two ways to create and manage Data Shares in Snowflake? (Choose two.)

Via the Snowflake Web Interface (Ul)

Via the data_share=true parameter

Via SQL commands

Via Virtual Warehouses

36. Which copy INTO command outputs the data into one file?

SINGLE=TRUE

MAX_FILE_NUMBER=1

FILE_NUMBER=1

MULTIPLE=FAISE

37. How many shares can be consumed by single Data Consumer?

100, but can be increased by contacting support

Unlimited

38. What command is used to load files into an Internal Stage within Snowflake?

PUT

COPY INTO

TRANSFER

INSERT

39. True or False: The user has to specify which cluster a query will run on in multi-clustering Warehouse.

True

False

40. Why would a customer size a Virtual Warehouse from an X-Small to a Medium?

To accommodate more queries

To accommodate more users

To accommodate fluctuations in workload

To accommodate a more complex workload

Page 5 of 8

41. How would you determine the size of the virtual warehouse used for a task?

Root task may be executed concurrently (i.e. multiple instances), it is recommended to leave some margins in the execution window to avoid missing instances of execution

Querying (select) the size of the stream content would help determine the warehouse size. For example, if querying large stream content, use a larger warehouse size

If using the stored procedure to execute multiple SQL statements, it's best to test run the stored procedure separately to size the compute resource first

Since task infrastructure is based on running the task body on schedule, it's recommended to configure the virtual warehouse for automatic concurrency handling using Multi-cluster warehouse (MCW) to match the task schedule

42. Which of the following are examples of operations that require a Virtual Warehouse to complete, assuming no quires have been executed previously? Choose 3 answers

MIN(< < column value>>)

COPY

SUM(<< column value >>)

UPDATE

43. What are the default Time Travel and Fail-safe retention periods for transient tables?

Time Travel - 1 day. Fail-safe - 1 day

Time Travel - 0 days. Fail-safe - 1 day

Time Travel - 1 day. Fail-safe - 0 days

Transient tables are retained in neither Fail-safe nor Time Travel

44. What happens when a virtual warehouse is resized?

When increasing the size of an active warehouse the compute resource for all running and queued queries on the warehouse are affected

When reducing the size of a warehouse the compute resources are removed only when they are no longer being used to execute any current statements.

The warehouse will be suspended while the new compute resource is provisioned and will resume automatically once provisioning is complete.

Users who are trying to use the warehouse will receive an error message until the resizing is complete

45. Which statements are true of micro-partitions? Choose 2 answers

They are approximately 16MB in size

They are stored compressed only if COMPRESS=TRUE on Table

They are Immutable

They are only encrypted in the Enterprise edition and above

46. Which Snowflake partner specializes in data catalog solutions?

Alation

DataRobot

dbt

Tableau

47. A virtual warehouse's auto-suspend and auto-resume settings apply to which of the following?

The primary cluster in the virtual warehouse

The entire virtual warehouse

The database in which the virtual warehouse resides

The Queries currently being run on the virtual warehouse

48. True or False: Snowpipe via RFST API can only reference External Stages as source.

True

False

49. Which statement best describes '' clustering''?

Clustering represents the way data is grouped together and stored within snowflake's micro-partitions

The database administrator must define the clustering methodology for each Snowflake table.

The clustering key must be included on the COPV command when loading data into Snowflake.

Clustering can be disabled within a Snowflake account.

50. Which of the following statements would be used to export/unload data from Snowflake?

COPY INTO @stage

EXPORT TO @stage

INSERT INTO @stage

EXPORT_TO_STAGE (stage = > @Wage, select = > 'select * from t1);

Page 6 of 8

51. What is a machine learning and data science partner within the Snowflake Partner Ecosystem?

Informatica

Power Bl

Adobe

Data Robot

52. What is a key feature of Snowflake architecture?

Zero-copy cloning creates a mirror copy of a database that updates with the original

Software updates are automatically applied on a quarterly basis

Snowflake eliminates resource contention with its virtual warehouse implementation

Multi-cluster warehouses allow users to run a query that spans across multiple clusters

Snowflake automatically sorts DATE columns during ingest for fast retrieval by date

53. Which of the following roles is recommended to be used to create and manage users and roles?

SYSADMIN

SECURITYADMIN

PUBLIC

ACCOUNTADMIN

54. Which of the following statements are true of VALIDATION_MODE in Snowflake? (Choose two.)

The validation_mode option is used when creating an Internal Stage

validation_mode=return_all_errors is a parameter of the copy command

The validation_mode option will validate data to be loaded by the copy statement while completing the load and will return the rows that could not be loaded without error

The validation_mode option will validate data to be loaded by the copy statement without completing the load and will return possible errors

55. True or False: Once created, a micro-partition will never be changed.

True

False

56. To run a Multi-Cluster Warehouse in auto-scale mode, a user would:

Configure the Maximum Clusters setting to “Auto-Scale”

Set the Warehouse type to “Auto”

Set the Minimum Clusters and Maximum Clusters settings to the same value

Set the Minimum Clusters and Maximum Clusters settings to the different values

57. Which of the following describes how clustering keys work in Snowflake?

Clustering keys update the micro-partitions in place with a full sort, and impact the DML operations.

Clustering keys sort the designated columns over time, without blocking DML operations

Clustering keys create a distributed, parallel data structure of pointers to a table's rows and columns

Clustering keys establish a hashed key on each node of a virtual warehouse to optimize joins at run-time

58. Which of the following are benefits of micro-partitioning? (Select TWO)

Micro-partitions cannot overlap in their range of values

Micro-partitions are immutable objects that support the use of Time Travel.

Micro-partitions can reduce the amount of I/O from object storage to virtual warehouses

Rows are automatically stored in sorted order within micro-partitions

Micro-partitions can be defined on a schema-by-schema basis

59. Which interfaces can be used to create and/or manage Virtual Warehouses?

The Snowflake Web Interface (UI)

SQL commands

Data integration tools

All of the above

60. When scaling out by adding clusters to a multi-cluster warehouse, you are primarily scaling for improved:

Concurrency

Performance

Page 7 of 8

61. True or False: You can query the files in an External Stage directly without having to load the data into a table.

True

False

62. Which are true of Snowflake roles?

All grants to objects are given to roles, and never to users

In order to do DML/DOL, a user needs to have selected a single role that has that specific access to the object and operation

The public role controls at other roles

Roles are a subset of users and users own objects In Snowflake

63. Query results are stored in the Result Cache for how long after they are last accessed, assuming no data changes have occurred?

1 Hour

3 Hours

12 hours

24 hours

64. Which Snowflake object enables loading data from files as soon as they are available in a cloud storage location?

Pipe

External stage

Task

Stream

65. Which of the following are best practices for users with the SYSADMIN/ACCOUNTADMIN roles? Choose 3 answers

Their default role should be set to SYSTEMADMIN (the lower of the two)

They should not set up multi_Factor Authentication (MFA)―as administrator they may need to change the MFA settings and those enrolled in MFA are unable to do so

They should only access and 'step into' the ACCOUNTADMIN role temporarily, as needed to complete a specific operation

They should ensure all database objects in the account are owned by the ACCOUNTADMIN role

They should use the SYSADMIN role to perform administrative work on database objects

66. Which statement best describes Snowflake tables?

Snowflake tables are logical representations of underlying physical data

Snowflake tables ate the physical instantiation of data loaded Into Snowflake

Snowflake tables require that clustering keys be defined to perform optimally

Snowflake tables are owned by a user

67. True or False: A table in Snowflake can only be queried using the Virtual Warehouse that was used to load the

data.

True

False

68. What is the MOST performant file format for loading data in Snowflake?

CSV (Unzipped)

Parquet

CSV (Gzipped)

ORC

69. True or False: Snowflake’s Global Services Layer gathers and maintains statistics on all columns in all micro-partitions.

True

False

70. True or False: Users are able to see the result sets of queries executed by other users that share their same role.

True

False

Page 8 of 8

71. What Snowflake role must be granted for a user to create and manage accounts?

ACCOUNTADMIN

ORGADMIN

SECURITYADMIN

SYSADMIN

72. A company strongly encourages all Snowflake users to self-enroll in Snowflake's default Multi-Factor Authentication (MFA) service to provide increased login security for users connecting to Snowflake.

Which application will the Snowflake users need to install on their devices in order to connect with MFA?

Okta Verify

Duo Mobile

Microsoft Authenticator

Google Authenticator

73. True or False: Snowflake bills for a minimum of five minutes each time a Virtual Warehouse is started.

True

False

74. A user is preparing to load data from an external stage

Which practice will provide the MOST efficient loading performance?

Organize files into logical paths

Store the files on the external stage to ensure caching is maintained

Use pattern matching for regular expression execution

Load the data in one large file

75. What SQL command would be used to view all roles that were granted to user.1?

show grants to user USER1;

show grants of user USER1;

describe user USER1;

show grants on user USER1;

76. How often are encryption keys automatically rotated by Snowflake?

30 Days

60 Days

90 Days

365 Days

77. The FLATEEN function is used to query which type of data in Snowflake?

Structured data

Semi-structured data

Both of the above

None of the above

New SnowPro Core Certification Exam COF-C02 Study Materials

New SnowPro Core Certification Exam COF-C02 Study Materials

Share this post

Leave a Reply Cancel reply

Related Posts

DSA-C02 SnowPro Advanced: Data Scientist Certification Exam Dumps

SnowPro Advanced Data Engineer Certification DEA-C01 Exam Questions

SnowPro Advanced Administrator ADA-C01 Exam Free Dumps

2021 New Updated SnowPro Core Exam Dumps Questions

Actual Questions for Snowflake SnowPro Advanced Architect Exam

Snowflake SnowPro Advanced Architect ARA-C01 Exam Questions