COF-C02 Practice Exams and Training Solutions for Certifications
Dumps Free Test Engine Player Verified Answers
Snowflake COF-C02 exam is a certification exam designed for individuals who are looking to demonstrate their expertise in Snowflake's cloud data platform. COF-C02 exam is known as the SnowPro Core Certification, which is a globally recognized certification that validates the skills and knowledge of an individual in Snowflake's core concepts and architecture.
Snowflake COF-C02: SnowPro Core Certification Exam is important because it demonstrates an individual's expertise in using Snowflake to manage data warehousing and related solutions. SnowPro Core Certification Exam certification is recognized by organizations worldwide, and it can help data professionals advance their careers by demonstrating their proficiency in using Snowflake to build, design, and manage data solutions.
NEW QUESTION # 414
In which use cases does Snowflake apply egress charges?
- A. Query result retrieval
- B. Database replication
- C. Loading data into Snowflake
- D. Data sharing within a specific region
Answer: D
Explanation:
Cloud providers apply data egress charges in either of the following use cases:
Data is transferred from one region to another within the same cloud platform.
Data is transferred out of the cloud platform.
https://docs.snowflake.com/en/user-guide/billing-data-transfer.html#:~:text=Cloud%20providers%20apply%20data%20egress,out%20of%20the%20cloud%20platform.
NEW QUESTION # 415
How can a dropped internal stage be restored?
- A. Enable Time Travel.
- B. Clone the dropped stage.
- C. Execute the UNDROP command.
- D. Recreate the dropped stage.
Answer: D
Explanation:
Once an internal stage is dropped in Snowflake, it cannot be recovered or restored using Time Travel or UNDROP commands. The only option is to recreate the dropped stage
NEW QUESTION # 416
Which semi-structured file format is a compressed, efficient, columnar data representation?
- A. JSON
- B. Parquet
- C. TSV
- D. Avro
Answer: B
Explanation:
Parquet is a columnar storage file format that is optimized for efficiency in both storage and processing. It supports compression and encoding schemes that significantly reduce the storage space needed and speed up data retrieval operations, making it ideal for handling large volumes of data. Unlike JSON or TSV, which are row-oriented and typically uncompressed, Parquet is designed specifically for use with big data frameworks, offering advantages in terms of performance and cost when storing and querying semi-structured data.
Reference: Apache Parquet Documentation
NEW QUESTION # 417
Which Snowflake object contains all the information required to share a database?
- A. Sequence
- B. Secure view
- C. Private listing
- D. Share
Answer: D
Explanation:
In Snowflake, a Share is the object that contains all the information required to share a database with other Snowflake accounts. Shares are used to securely share data stored in Snowflake tables and views, enabling data providers to grant data consumers access to their datasets without duplicating data. When a database is shared, it can include one or more schemas, and each schema can contain tables, views, or both.
References:
* Snowflake Documentation on Shares: Shares
NEW QUESTION # 418
Regardless of which notation is used, what are considerations for writing the column name and element names when traversing semi-structured data?
- A. The column name is case-insensitive but element names are case-sensitive.
- B. The column name and element names are both case-sensitive.
- C. The column name is case-sensitive but element names are case-insensitive.
- D. The column name and element names are both case-insensitive.
Answer: A
NEW QUESTION # 419
A materialized view should be created when which of the following occurs? (Choose two.)
- A. The results of the query do not change often and are used frequently.
- B. The query is highly optimized and does not consume many compute resources.
- C. The query consumes many compute resources every time it runs.
- D. There is minimal cost associated with running the query.
- E. The base table gets updated frequently.
Answer: A,C
Explanation:
A materialized view is beneficial when the query consumes many compute resources every time it runs (B), and when the results of the query do not change often and are used frequently (E). This is because materialized views store pre-computed data, which can speed up query performance for workloads that are run frequently or are complex
NEW QUESTION # 420
How often are encryption keys automatically rotated by Snowflake?
- A. 30 Days
- B. 60 Days
- C. 90 Days
- D. 365 Days
Answer: A
Explanation:
Snowflake automatically rotates encryption keys when they are more than 30 days old. Active keys are retired, and new keys are created. This process is part of Snowflake's comprehensive security measures to ensure data protection and is managed entirely by the Snowflake service without requiring user intervention.
Reference:
Understanding Encryption Key Management in Snowflake
NEW QUESTION # 421
What are advantages clones have over tables created with CREATE TABLE AS SELECT statement? (Choose two.)
- A. The clone will have time travel history from the original table.
- B. The clone has better query performance.
- C. The clone is created almost instantly.
- D. The clone saves space by not duplicating storage.
- E. The clone always stays in sync with the original table.
Answer: C,D
Explanation:
Clones in Snowflake have the advantage of being created almost instantly and saving space by not duplicating storage. This is due to Snowflake's zero-copy cloning feature, which allows for the creation of object clones without the additional storage costs typically associated with data duplication23. Clones are independent of the original table and do not stay in sync with it, nor do they inherently have better query performance. However, they do inherit the time travel history from the original table at the time of cloning
NEW QUESTION # 422
A table needs to be loaded. The input data is in JSON format and is a concatenation of multiple JSON documents. The file size is 3 GB. A warehouse size small is being used. The following COPY INTO command was executed:
COPY INTO SAMPLE FROM @~/SAMPLE.JSON (TYPE=JSON)
The load failed with this error:
Max LOB size (16777216) exceeded, actual size of parsed column is 17894470.
How can this issue be resolved?
- A. Compress the file and load the compressed file.
- B. Split the file into multiple files in the recommended size range (100 MB - 250 MB).
- C. Set STRIP_OUTER_ARRAY=TRUE in the COPY INTO command.
- D. Use a larger-sized warehouse.
Answer: A
NEW QUESTION # 423
What is used to denote a pre-computed data set derived from a SELECT query specification and stored for later use?
- A. External table
- B. View
- C. Secure view
- D. Materialized view
Answer: D
Explanation:
A materialized view in Snowflake denotes a pre-computed data set derived from a SELECT query specification and stored for later use. Unlike standard views, which dynamically compute the data each time the view is accessed, materialized views store the result of the query at the time it is executed, thereby speeding up access to the data, especially for expensive aggregations on large datasets.
Reference:
Snowflake Documentation: Materialized Views
NEW QUESTION # 424
Which Snowflake URL type is used by directory tables?
- A. File
- B. Scoped
- C. Virtual-hosted style
- D. Pre-signed
Answer: B
Explanation:
The Snowflake URL type used by directory tables is the scoped URL. This type of URL provides access to files in a stage with metadata, such as the Snowflake file URL, for each file
NEW QUESTION # 425
Which of the following are characteristics of security in Snowflake?
- A. Private communication to internal stages is allowed in the Snowflake Enterprise edition and higher.
- B. Periodic rekeying of encrypted data is available with the Snowflake Enterprise edition and higher
- C. Account and user authentication is only available with the Snowflake Business Critical edition.
- D. Support for HIPAA and GDPR compliance is available for UI Snowflake editions.
Answer: B
Explanation:
One of the security features of Snowflake includes the periodic rekeying of encrypted data, which is available with the Snowflake Enterprise edition and higher2.
This ensures that the encryption keys are rotated regularly to maintain a high level of security.
References: [COF-C02] SnowPro Core Certification Exam Study Guide
NEW QUESTION # 426
Which role has the ability to create a share from a shared database by default?
- A. SYSADMIN
- B. ACCOUNTADMIN
- C. ORGADMIN
- D. SECURITYADMIN
Answer: B
Explanation:
By default, the ACCOUNTADMIN role in Snowflake has the ability to create a share from a shared database. This role has the highest level of access within a Snowflake account, including the management of all aspects of the account, such as users, roles, warehouses, and databases, as well as the creation and management of shares for secure data sharing with other Snowflake accounts.
Reference:
Snowflake Documentation: Roles
NEW QUESTION # 427
When should a user consider disabling auto-suspend for a virtual warehouse? (Select TWO).
- A. When the warehouse is shared across different teams
- B. When the user does not want to have to manually turn on the warehouse each time it is needed
- C. When users will be using compute at different times throughout a 24/7 period
- D. When managing a steady workload
- E. When the compute must be available with no delay or lag time
Answer: D,E
NEW QUESTION # 428
Which of the following objects is not covered by Time Travel?
- A. Tables
- B. Schemas
- C. Stages
- D. Databases
Answer: C
NEW QUESTION # 429
While clustering a table, columns with which data types can be used as clustering keys? (Select TWO).
- A. GEOGRAPHY
- B. VARIANT
- C. OBJECT
- D. BINARY
- E. GEOMETRY
Answer: A,D
NEW QUESTION # 430
Which common query problems are identified by the Query Profile? (Select TWO.)
- A. Inefficient pruning
- B. Syntax error
- C. Ambiguous column names
- D. Object does not exist or not authorized
- E. Queries too large to fit in memory
Answer: A,E
NEW QUESTION # 431
Which metadata table will store the storage utilization information even for dropped tables?
- A. TABLE_STORAGE_METRICS
- B. STORAGE_DAILY_HISTORY
- C. DATABASE_STORAGE_USAGE_HISTORY
- D. STAGE STORAGE USAGE HISTORY
Answer: A
Explanation:
The TABLE_STORAGE_METRICS metadata table stores the storage utilization information, including for tables that have been dropped but are still incurring storage costs2.
NEW QUESTION # 432
......
Snowflake COF-C02 Certification Exam is a great way to demonstrate your expertise in Snowflake and advance your career. SnowPro Core Certification Exam certification is recognized by many organizations and can help you stand out in a competitive job market. Additionally, being certified in Snowflake can open up new job opportunities and increase your earning potential.
Q&As with Explanations Verified & Correct Answers: https://www.easy4engine.com/COF-C02-test-engine.html
COF-C02 Dumps with Free 365 Days Update Fast Exam Updates: https://drive.google.com/open?id=1li05ywsZgtCtQBLz9Va3OrpFqrKv-d-Q
