Ultimate Guide to Prepare COF-C02 with Accurate PDF Questions [Dec 02, 2023]
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NEW QUESTION # 10
In an auto-scaling multi-cluster virtual warehouse with the setting SCALING_POLICY = ECONOMY enabled, when is another cluster started?
- A. When the system has enough load for 8 minutes
- B. When the system has enough load for 10 minutes
- C. When the system has enough load for 6 minutes
- D. When the system has enough load for 2 minutes
Answer: B
NEW QUESTION # 11
True or False: When you create a custom role, it is a practice to immediately grant that role
to ACCOUNTADMIN.
- A. False
- B. True
Answer: A
NEW QUESTION # 12
What happens when a cloned table is replicated to a secondary database? (Select TWO)
- A. The replication will not be successful.
- B. A read-only copy of the cloned tables is stored.
- C. The physical data is replicated
- D. Metadata pointers to cloned tables are replicated
- E. Additional costs for storage are charged to a secondary account
Answer: C,E
Explanation:
Cloned objects are replicated physically rather than logically to secondary databases. That is, cloned tables in a standard database do not contribute to the overall data storage unless or until DML operations on the clone add to or modify existing data. However, when a cloned table is replicated to a secondary database, the physical data is also replicated, increasing the data storage usage for your account.
https://docs.snowflake.com/en/user-guide/database-replication-considerations.html#:~:text=Replication%20and%20Cloning,-Cloned%20objects%20are&text=However%2C%20when%20a%20cloned%20table,storage%20usage%20for%20your%20account.
NEW QUESTION # 13
When scaling up Virtual Warehouse by increasing Virtual Warehouse t-shirt size, you are primarily scaling for improved:
- A. Performance
- B. Concurrency
Answer: A
NEW QUESTION # 14
What is the purpose of using the OBJECT_CONSTRUCT function with me COPY INTO command?
- A. Reorder the data columns according to a target table definition and then unload the rows into the table.
- B. Convert the rows in a relational table lo a single VARIANT column and then unload the rows into a file.
- C. Reorder the rows in a relational table and then unload the rows into a file
- D. Convert the rows in a source file to a single variant column and then load the rows from the file to a variant table.
Answer: B
NEW QUESTION # 15
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.
- A. False
- B. True
Answer: A
NEW QUESTION # 16
Which of the following Snowflake objects can be shared using a secure share? (Select TWO).
- A. Procedures
- B. Sequences
- C. Secure User Defined Functions (UDFs)
- D. Tables
- E. Materialized views
Answer: C,D
Explanation:
Explanation
Secure Data Sharing enables sharing selected objects in a database in your account with other Snowflake accounts. The following Snowflake database objects can be shared:
* Tables
* External tables
* Secure views
* Secure materialized views
* Secure UDFs
https://docs.snowflake.com/en/user-guide/data-sharing-intro.html
NEW QUESTION # 17
What are value types that a VARIANT column can store? (Select TWO)
- A. STRUCT
- B. ARRAY
- C. OBJECT
- D. CLOB
- E. BINARY
Answer: B,C
Explanation:
Explanation
Characteristics of a VARIANT
A VARIANT can store a value of any other type, including OBJECT and ARRAY. The maximum length of a VARIANT is 16 MB.
https://docs.snowflake.com/en/sql-reference/data-types-semistructured.html#:~:text=VARIANT-,Characteristics
NEW QUESTION # 18
What is a limitation of a Materialized View?
- A. A Materialized View cannot be defined with a JOIN
- B. A Materialized View can only reference up to two tables
- C. A Materialized View cannot be joined with other tables
- D. A Materialized View cannot support any aggregate functions
Answer: A
Explanation:
Explanation
There are several limitations to using materialized views:
* A materialized view can query only a single table.
* Joins, including self-joins, are not supported.
NEW QUESTION # 19
What is the default character set used when loading CSV files into Snowflake?
- A. UTF-8
- B. ANSI_X3.A
- C. UTF-16
- D. ISO S859-1
Answer: A
Explanation:
https://docs.snowflake.com/en/user-guide/intro-summary-loading.html#:~:text=For%20delimited%20files%20(CSV%2C%20TSV,encoding%20to%20use%20for%20loading.
For delimited files (CSV, TSV, etc.), the default character set is UTF-8. To use any other characters sets, you must explicitly specify the encoding to use for loading. For the list of supported character sets, see Supported Character Sets for Delimited Files (in this topic).
NEW QUESTION # 20
What can a Snowflake user do in the Activity section in Snowsight?
- A. Explore executed query performance.
- B. Create dashboards.
- C. Explore databases and objects.
- D. Write and run SQL queries.
Answer: A
NEW QUESTION # 21
Which formats are supported for unloading data from Snowflake? Choose 2 answers
- A. JSON
- B. Delimited (CSV, TSV, etc.)
- C. ORC
- D. Avro
Answer: A,B
NEW QUESTION # 22
What is the minimum Snowflake edition that provides multi-cluster warehouses and up to 90 days of Time Travel?
- A. Business Critical Edition
- B. Premier
- C. Standard
- D. Enterprise
Answer: D
NEW QUESTION # 23
Which Snowflake partner specializes in data catalog solutions?
- A. DataRobot
- B. Tableau
- C. dbt
- D. Alation
Answer: D
Explanation:
Explanation
Alation provides Data Cataloging functionality. They state they are the 'One Place to Find, Understand, & Govern Data Across an Enterprise.
https://docs.snowflake.com/en/user-guide/ecosystem-all.html
NEW QUESTION # 24
Which feature is only available in the Enterprise or higher editions of Snowflake?
- A. Multi-factor Authentication (MFA)
- B. Object-level access control
- C. SOC 2 type II certification
- D. Column-level security
Answer: D
Explanation:
https://docs.snowflake.com/en/user-guide/intro-editions.html
NEW QUESTION # 25
How long is Snowpipe data load history retained?
- A. As configured in the create pipe settings
- B. 14 days
- C. 64 days
- D. Until the pipe is dropped
Answer: C
NEW QUESTION # 26
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?
- A. Okta Verify
- B. Microsoft Authenticator
- C. Google Authenticator
- D. Duo Mobile
Answer: D
NEW QUESTION # 27
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