[Sep 04, 2024] Latest Questions COF-C02 Guide to Prepare Free Practice Tests
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NEW QUESTION # 341
What criteria does Snowflake use to determine the current role when initiating a session? (Select TWO).
- A. If a role was specified as part of the connection and that role has not been granted to the Snowflake user, the role is automatically granted and it becomes the current role.
- B. If a role was specified as part of the connection and that role has not been granted to the Snowflake user, it will be ignored and the default role will become the current role.
- C. If no role was specified as part of the connection and a default role has been defined for the Snowflake user, that role becomes the current role.
- D. If no role was specified as part of the connection and a default role has not been set for the Snowflake user, the session will not be initiated and the log in will fail.
- E. If a role was specified as part of the connection and that role has been granted to the Snowflake user, the specified role becomes the current role.
Answer: C,E
Explanation:
When initiating a session in Snowflake, the system determines the current role based on the user's connection details and role assignments. If a user specifies a role during the connection, and that role is already granted to them, Snowflake sets it as the current role for the session. Alternatively, if no role is specified during the connection, but the user has a default role assigned, Snowflake will use this default role as the current session role. These mechanisms ensure that users operate within their permissions, enhancing security and governance within Snowflake environments.
References:
* Snowflake Documentation: Understanding Roles
NEW QUESTION # 342
How can a Snowflake user validate data that is unloaded using the COPY INTO <location> command?
- A. Load the data into a CSV file.
- B. Load the data into a relational table.
- C. Use the VALIDATION MODE = RETURN ROWS statement.
- D. Use the VALIDATION_MODE = SQL Statement.
Answer: C
NEW QUESTION # 343
True or False: The user has to specify which cluster a query will run on in multi-clustering Warehouse.
- A. False
- B. True
Answer: A
NEW QUESTION # 344
Which command should be used to load data from a file, located in an external stage, into a table in Snowflake?
- A. INSERT
- B. GET
- C. COPY
- D. PUT
Answer: C
NEW QUESTION # 345
When should a multi-cluster warehouse be used in auto-scaling mode?
- A. When a large number of concurrent queries are run on the same warehouse
- B. If the runtime of the executed query is very slow
- C. If the select statement contains a large number of temporary tables or Common Table Expressions (CTEs)
- D. When it is unknown how much compute power is needed
Answer: A
NEW QUESTION # 346
How can a data provider ensure that a data consumer is going to have access to the required objects?
- A. Enable the data sharing feature in the account and validate the view.
- B. Use the CURRENT_ROLE and CURRENT_USER functions to validate secure views.
- C. Set the SIMULATED DATA SHARING CONSUMER session parameter to the name of the consumer account for which access is being simulated.
- D. Use the CURRENT_ function to authorize users from a specific account to access rows in a base table.
Answer: A
NEW QUESTION # 347
Which statement accurately describes a characteristic of a materialized view?
- A. Querying a materialized view is slower than executing a query against the base table of the view.
- B. Data accessed through materialized views can be stale.
- C. A materialized view can query only a single table.
- D. Materialized view refreshes need to be maintained by the user.
Answer: B
Explanation:
A characteristic of a materialized view is that the data accessed through it can be stale. This is because the data in a materialized view may not reflect the latest changes in the base tables until the view is refreshed
NEW QUESTION # 348
What are the main differences between the account usage views and the information schema views? (Select TWO).
- A. Information schema views are read-only but account usage views are not.
- B. Account usage views do not contain data about tables but information schema views do.
- C. Data retention for account usage views is 1 year but is 7 days to 6 months for information schema views, depending on the view.
- D. Account issue views contain dropped objects but information schema views do not.
- E. No active warehouse to needed to query account usage views but one is needed to query information schema views.
Answer: C,D
Explanation:
The account usage views in Snowflake provide historical usage data about the Snowflake account, and they retain this data for a period of up to 1 year. These views include information about dropped objects, enabling audit and tracking activities. On the other hand, information schema views provide metadata about database objects currently in use, such as tables and views, but do not include dropped objects. The retention of data in information schema views varies, but it is generally shorter than the retention for account usage views, ranging from 7 days to a maximum of 6 months, depending on the specific view.References: Snowflake Documentation on Account Usage and Information Schema
NEW QUESTION # 349
What is the recommended way to change the existing file format type in my format from CSV to JSON?
- A. CREATE OR REPLACE FILE FORMAT my format TYPE-JSON;
- B. ALTER FILE FORMAT my_format SET TYPE=JSON;
- C. REPLACE FILE FORMAT my format TYPE-JSON;
- D. ALTER FILE FORMAT my format SWAP TYPE WITH JSON;
Answer: A
NEW QUESTION # 350
If a Snowflake user decides a table should be clustered, what should be used as the cluster key?
- A. The columns that are queried in the select clause.
- B. The columns with very high cardinality.
- C. The columns with many different values.
- D. The columns most actively used in the select filters.
Answer: D
NEW QUESTION # 351
Which system_defined Snowflake role has permission to rename an account and specify whether the original URL can be used to access the renamed account?
- A. SYSADMIN
- B. ORGADMIN
- C. SECURITYADMIN
- D. ACCOUNTADMIN
Answer: D
Explanation:
The ACCOUNTADMIN role in Snowflake has the highest level of privileges, including the ability to manage accounts, users, roles, and all objects within the account. This role is specifically granted the permission to rename an account and specify whether the original URL can be used to access the renamed account. The ACCOUNTADMIN role encompasses broad administrative capabilities, ensuring that users assigned this role can perform critical account management tasks.References: Snowflake Documentation on Roles and Permissions
NEW QUESTION # 352
What factors impact storage costs in Snowflake? (Select TWO).
- A. The type of data being stored
- B. The account type
- C. The cloud platform being used
- D. The cloud region used by the account
- E. The storage file format
Answer: B,D
Explanation:
The factors that impact storage costs in Snowflake include the account type (Capacity or On Demand) and the cloud region used by the account. These factors determine the rate at which storage is billed, with different regions potentially having different rates3.
NEW QUESTION # 353
How often are encryption keys automatically rotated by Snowflake?
- A. 365 Days
- B. 90 Days
- C. 60 Days
- D. 30 Days
Answer: D
Explanation:
All Snowflake-managed keys are automatically rotated by Snowflake when they are more than 30 days old. Active keys are retired, and new keys are created. When Snowflake determines the retired key is no longer needed, the key is automatically destroyed.
https://docs.snowflake.com/en/user-guide/security-encryption-manage.html#:~:text=All%20Snowflake%2Dmanaged%20keys%20are,the%20key%20is%20automatically%20destroyed.
NEW QUESTION # 354
Which data types can be used in a Snowflake table that holds semi-structured data? (Select TWO).
- A. BINARY
- B. VARIANT
- C. ARRAY
- D. VARCHAK
- E. TEXT
Answer: B,C
NEW QUESTION # 355
Which cache type is used to cache data output from SQL queries?
- A. Remote cache
- B. Result cache
- C. Local file cache
- D. Metadata cache
Answer: B
Explanation:
Explanation
https://community.snowflake.com/s/article/Caching-in-Snowflake-Data-Warehouse
NEW QUESTION # 356
User-level network policies can be created by which of the following roles? (Select TWO).
- A. SYSADMIN
- B. USERADMIN
- C. SECURITYADMIN
- D. ACCOUNTADMIN
- E. ROLEADMIN
Answer: C,D
Explanation:
User-level network policies in Snowflake can be created by roles with the necessary privileges to manage security and account settings. The ACCOUNTADMIN role has the highest level of privileges across the account, including the ability to manage network policies. The SECURITYADMIN role is specifically responsible for managing security objects within Snowflake, which includes the creation and management of network policies.
References:
* [COF-C02] SnowPro Core Certification Exam Study Guide
* Snowflake Documentation on Network Policies1
* Section 1.3 - SnowPro Core Certification Study Guide
NEW QUESTION # 357
When does a materialized view get suspended in Snowflake?
- A. When the base table is reclustered
- B. When a column is dropped from the base table
- C. When a column is added to the base table
- D. When a DML operation is run on the base table
Answer: B
Explanation:
A materialized view in Snowflake gets suspended when structural changes that could impact the view's integrity are made to the base table, such as B. When a column is dropped from the base table. Dropping a column from the base table on which a materialized view is defined can invalidate the view's data, as the view might rely on the column that is being removed. To maintain data consistency and prevent the materialized view from serving stale or incorrect data, Snowflake automatically suspends the materialized view.
Upon suspension, the materialized view does not reflect changes to the base table until it is refreshed or re-created. This ensures that only accurate and current data is presented to users querying the materialized view.
References:
* Snowflake Documentation on Materialized Views: Materialized Views
NEW QUESTION # 358
Which of the following connectors allow Multi-Factor Authentication (MFA) authorization when connecting? (Choose all that apply.)
- A. Snowflake Web Interface (UI)
- B. SnowSQL
- C. Python
- D. JDBC
- E. ODBC
Answer: A,B,C,D,E
NEW QUESTION # 359
What is the maximum total Continuous Data Protection (CDP) charges incurred for a temporary table?
- A. 24 hours
- B. 30 days
- C. 7 days
- D. 48 hours
Answer: A
NEW QUESTION # 360
What role is required to use Partner Connect?
- A. SYSADMIN
- B. ORGADMIN
- C. SECURITYADMIN
- D. ACCOUNTADMIN
Answer: D
Explanation:
To use Partner Connect, the ACCOUNTADMIN role is required. Partner Connect allows account administrators to easily create trial accounts with selected Snowflake business partners and integrate these accounts with Snowflake
NEW QUESTION # 361
Which of the following is the Snowflake Account_Usage.Metering_History view used for?
- A. Gathering the hourly credit usage for an account
- B. Compiling an account's average cloud services cost over the previous month
- C. Summarizing the throughput of Snowpipe costs for an account
- D. Calculating the funds left on an account's contract
Answer: A
Explanation:
The Snowflake Account_Usage.Metering_History view is used to gather the hourly credit usage for an account. This view provides details on the credits consumed by various services within Snowflake for the last
365 days1.
NEW QUESTION # 362
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Snowflake COF-C02 (SnowPro Core Certification) Certification Exam is designed for data professionals who want to validate their skills and knowledge in using the Snowflake data platform. SnowPro Core Certification Exam certification is ideal for data engineers, data architects, database administrators, data analysts, and data scientists who work with Snowflake. SnowPro Core Certification Exam certification exam is also suitable for IT professionals who want to expand their knowledge and skills in cloud data platforms.
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