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Dumps Real Snowflake COF-C02 Exam Questions [Updated 2024]
Snowflake COF-C02: SnowPro Core Certification exam is a valuable asset for professionals in the tech industry. SnowPro Core Certification Exam certification demonstrates to employers that the candidate has a deep understanding of Snowflake technology and its capabilities, and is capable of working with the technology in a practical setting. SnowPro Core Certification Exam certification can also lead to career advancement opportunities and increased earning potential for professionals.
NEW QUESTION # 324
If 3 size Small virtual warehouse is made up of two servers, how many servers make up a Large warehouse?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Size specifies the amount of compute resources available per cluster in a warehouse. Snowflake supports the following warehouse sizes:
https://docs.snowflake.com/en/user-guide/warehouses-overview.html
NEW QUESTION # 325
A user created a transient table and made several changes to it over the course of several days. Three days after the table was created, the user would like to go back to the first version of the table.
How can this be accomplished?
- A. The transient table version cannot be retrieved after 24 hours.
- B. Contact Snowflake Support to have the data retrieved from Fail-safe storage.
- C. Use the FAIL_SAFE parameter for Time Travel to retrieve the data from Fail-safe storage.
- D. Use Time Travel, as long as DATA_RETENTION_TIME_IN_DAYS was set to at least 3 days.
Answer: A
NEW QUESTION # 326
What is a key feature of Snowflake architecture?
- A. Snowflake eliminates resource contention with its virtual warehouse implementation
- B. Multi-cluster warehouses allow users to run a query that spans across multiple clusters
- C. Zero-copy cloning creates a mirror copy of a database that updates with the original
- D. Software updates are automatically applied on a quarterly basis
- E. Snowflake automatically sorts DATE columns during ingest for fast retrieval by date
Answer: B
NEW QUESTION # 327
Which feature is only available in the Enterprise or higher editions of Snowflake?
- A. SOC 2 type II certification
- B. Multi-factor Authentication (MFA)
- C. Object-level access control
- D. Column-level security
Answer: D
Explanation:
https://docs.snowflake.com/en/user-guide/intro-editions.html
NEW QUESTION # 328
Which of the following is true of Snowpipe via REST API? Choose 2 answers
- A. Snowflake automatically manages the compute required to execute the Pipe's copy into commands
- B. Snowpipe keeps track of which files it has loaded
- C. you can only use it on internal Stages
- D. All COPY INTO options are available fluting pipe creation
Answer: A,B
NEW QUESTION # 329
Which task is supported by the use of Access History in Snowflake?
- A. Performance optimization
- B. Cost monitoring
- C. Data backups
- D. Compliance auditing
Answer: D
Explanation:
Access History in Snowflake is primarily utilized for compliance auditing. The Access History feature provides detailed logs that track data access and modifications, including queries that read from or write to database objects. This information is crucial for organizations to meet regulatory requirements and to perform audits related to data access and usage.
* Role of Access History: Access History logs are designed to help organizations understand who accessed what data and when. This is particularly important for compliance with various regulations that require detailed auditing capabilities.
* How Access History Supports Compliance Auditing:
* By providing a detailed log of access events, organizations can trace data access patterns, identify unauthorized access, and ensure that data handling complies with relevant data protection laws and regulations.
* Access History can be queried to extract specific events, users, time frames, and accessed objects, making it an invaluable tool for compliance officers and auditors.
Reference: For more information on how Access History supports compliance auditing, refer to the Snowflake documentation on Access History:
https://docs.snowflake.com/en/sql-reference/account-usage/access_history.html
NEW QUESTION # 330
How long is the Fail-safe period for temporary and transient tables?
- A. There is no Fail-safe period for these tables.
- B. 7 days
- C. 90 days
- D. 31 days
- E. 1 day
Answer: A
NEW QUESTION # 331
What information does the Query Profile provide?
- A. Real-time monitoring of the database operations
- B. Statistics for each component of the processing plan
- C. Graphical representation of the data model
- D. Detailed Information about I he database schema
Answer: B
NEW QUESTION # 332
What is the recommended file sizing for data loading using Snowpipe?
- A. A compressed file size greater than 100 MB, and up to 250 MB
- B. A compressed file size greater than 10 MB, and up to 100 MB
- C. A compressed file size greater than 100 GB, and up to 250 GB
- D. A compressed file size greater than 1 GB, and up to 2 GB
Answer: B
Explanation:
For data loading using Snowpipe, the recommended file size is a compressed file greater than 10 MB and up to
100 MB. This size range is optimal for Snowpipe's continuous, micro-batch loading process, allowing for efficient and timely data ingestion without overwhelming the system with files that are too large or too small.
References:
* [COF-C02] SnowPro Core Certification Exam Study Guide
* Snowflake Documentation on Snowpipe1
NEW QUESTION # 333
How can a Snowflake user optimize query performance in Snowflake? (Select TWO).
- A. Enable Time Travel.
- B. Enable the search optimization service.
- C. Index a table.
- D. Cluster a table.
- E. Create a view.
Answer: B,D
NEW QUESTION # 334
Which Snowflake layer is associated with virtual warehouses?
- A. Elastic memory
- B. Database storage
- C. Cloud services
- D. Query processing
Answer: D
NEW QUESTION # 335
What are supported file formats for unloading data from Snowflake? (Choose three.)
- A. Parquet
- B. CSV
- C. JSON
- D. XML
- E. ORC
- F. AVRO
Answer: A,B,C
NEW QUESTION # 336
Which data types does Snowflake support when querying semi-structured data? (Select TWO)
- A. BLOB
- B. VARCHAR
- C. XML
- D. ARRAY
- E. VARIANT
Answer: D,E
NEW QUESTION # 337
A virtual warehouse is created using the following command:
Create warehouse my_WH with
warehouse_size = MEDIUM
min_cluster_count = 1
max_cluster_count = 1
auto_suspend = 60
auto_resume = true;
The image below is a graphical representation of the warehouse utilization across two days.
What action should be taken to address this situation?
- A. Lower the value of the parameter STATEMENT_QUEUED_TIMEOUT_IN_SECONDS.
- B. Increase the warehouse size from Medium to 2XL.
- C. Increase the value for the parameter MAX_CONCURRENCY_LEVEL.
- D. Configure the warehouse to a multi-cluster warehouse.
Answer: C
NEW QUESTION # 338
Which pages are included in the Activity area of Snowsight? (Select TWO).
- A. Copy History
- B. Sharing settings
- C. Automatic Clustering History
- D. Query History
- E. Contacts
Answer: A,D
NEW QUESTION # 339
What is the purpose of multi-cluster virtual warehouses?
- A. To allow the warehouse to resize automatically
- B. To eliminate or reduce Queuing of concurrent queries
- C. To create separate data warehouses to increase query optimization
- D. To allow users the ability to choose the type of compute nodes that make up a virtual warehouse cluster
Answer: B
Explanation:
https://docs.snowflake.com/en/user-guide/warehouses-multicluster.html#:~:text=Multi%2Dcluster%20warehouses%20enable%20you,during%20peak%20and%20off%20hours.
NEW QUESTION # 340
How should clustering be used to optimize the performance of queries that run on a very large table?
- A. Use the column that is most-frequently used in query select clauses as the clustering key.
- B. Manually re-cluster the table regularly.
- C. Assess the average table depth to identify how clustering is impacting the query.
- D. Choose one high cardinality column as the clustering key.
Answer: D
Explanation:
For optimizing the performance of queries that run on a very large table, it is recommended to choose one high cardinality column as the clustering key. This helps to co-locate similar rows in the same micro-partitions, improving scan efficiency in queries by skipping data that does not match filtering predicates4.
References: [COF-C02] SnowPro Core Certification Exam Study Guide
NEW QUESTION # 341
A Snowflake account has activated federated authentication.
What will occur when a user with a password that was defined by Snowflake attempts to log in to Snowflake?
- A. The user will be unable to enter a password.
- B. The user will be able to log into Snowflake successfully.
- C. The user will encounter an error, and will not be able to log in.
- D. After entering the username and password, the user will be redirected to an Identity Provider (IdP) login page.
Answer: A
Explanation:
When federated authentication is activated in Snowflake, users authenticate via an external identity provider (IdP) rather than using Snowflake-managed credentials. Therefore, a user with a password defined by Snowflake will be unable to enter a password and must use their IdP credentials to log in.
NEW QUESTION # 342
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