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SnowPro Core Recertification Exam Dumps

COF-R02 Exam Format | Course Contents | Course Outline | Exam Syllabus | Exam Objectives

Exam Specification:

- Exam Name: SnowPro Core Recertification (COF-R02)
- Exam Code: COF-R02
- Exam Duration: 60 minutes
- Exam Format: Multiple-choice and multiple-select questions

Course Outline:

1. Snowflake Architecture and Core Concepts
- Understanding the Snowflake architecture and its components
- Exploring Snowflake's compute, storage, and services layers
- Understanding Snowflake's data sharing and security features

2. Data Loading and Unloading
- Loading data into Snowflake from various sources
- Unloading data from Snowflake to external systems
- Implementing efficient data loading and unloading techniques

3. Querying and Managing Data
- Writing SQL queries to retrieve and manipulate data in Snowflake
- Managing tables, views, and other database objects
- Implementing data access controls and user privileges

4. Data Warehousing and Performance Optimization
- Designing and managing data warehouses in Snowflake
- Implementing performance optimization techniques for data processing
- Utilizing Snowflake's features for workload management and resource optimization

5. Data Security and Governance
- Implementing data security measures in Snowflake
- Ensuring data privacy, access control, and compliance
- Implementing data governance and data lifecycle management processes

Exam Objectives:

1. Demonstrate a comprehensive understanding of Snowflake architecture and core concepts.
2. Load and unload data into/from Snowflake using efficient techniques.
3. Write SQL queries to query and manipulate data in Snowflake.
4. Manage tables, views, and other database objects in Snowflake.
5. Design and manage data warehouses in Snowflake.
6. Implement data security measures and ensure compliance in Snowflake.
7. Optimize performance and resource utilization in Snowflake.
8. Demonstrate knowledge of data governance and data lifecycle management in Snowflake.

Exam Syllabus:

The exam syllabus covers the following topics (but is not limited to):

- Snowflake Architecture and Core Concepts
- Data Loading and Unloading
- Querying and Managing Data
- Data Warehousing and Performance Optimization
- Data Security and Governance

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SnowFlake
COF-R02
SnowPro Core Recertification
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Question: 83
What happens when a virtual warehouse is resized?
A. When increasing the size of an active warehouse the compute resource for all running and queued queries on the
warehouse are affected
B. 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.
C. The warehouse will be suspended while the new compute resource is provisioned and will resume automatically
once provisioning is complete.
D. Users who are trying to use the warehouse will receive an error message until the resizing is complete
Answer: B
Question: 84
A user has unloaded data from Snowflake to a stage
Which SQL command should be used to validate which data was loaded into the stage?
A. list @file__stage
B. show @file__stage
C. view @file__stage
D. verify @file__stage
Answer: A
Question: 85
Snowflake is designed for which type of workloads? (Choose two.)
A. OLAP (Analytics) workloads
B. OLTP (Transactional) workloads
C. Concurrent workloads
D. On-premise workloads
Answer: A,C
Explanation:
Reference:
https://blog.couchbase.com/its-the-workload-stupid/
https://www.quora.com/Can-Snowflake-be-used-for-an-OLTP-system-or-is-it-only-best-suited-for-warehousing
Question: 86
Which of the following are best practice recommendations that should be considered when loading data into
Snowflake? (Select TWO).
A. Load files that are approximately 25 MB or smaller.
B. Remove all dates and timestamps.
C. Load files that are approximately 100-250 MB (or larger)
D. Avoid using embedded characters such as commas for numeric data types
E. Remove semi-structured data types
Answer: C,D
Explanation:
https://docs.snowflake.com/en/user-guide/data-load-considerations-prepare.html
Question: 87
True or False: A Snowflake account is charged for data stored in both Internal and External Stages.
A. True
B. False
Answer: A
Explanation:
Reference: https://docs.snowflake.com/en/user-guide/tables-storage-considerations.html
Question: 88
Which of the following are valid methods for authenticating users for access into Snowflake? (Select THREE)
A. SCIM
B. Federated authentication
C. TLS 1.2
D. Key-pair authentication
E. OAuth
F. OCSP authentication
Answer: B,D,E
Question: 89
What is a machine learning and data science partner within the Snowflake Partner Ecosystem?
A. Informatica
B. Power Bl
C. Adobe
D. Data Robot
Answer: D
Explanation:
https://docs.snowflake.com/en/user-guide/ecosystem-analytics.html
Question: 90
Which of the following statements are true of Virtual Warehouses? (Choose all that apply.)
A. Customers can change the size of the Warehouse after creation
B. A Warehouse can be resized while running
C. A Warehouse can be configured to suspend after a period of inactivity
D. A Warehouse can be configured to auto-resume when new queries are submitted
Answer: A,B,C,D
Explanation:
Reference: https://docs.snowflake.com/en/user-guide/warehouses-multicluster.html
Question: 91
A virtual warehouse�s auto-suspend and auto-resume settings apply to which of the following?
A. The primary cluster in the virtual warehouse
B. The entire virtual warehouse
C. The database in which the virtual warehouse resides
D. The Queries currently being run on the virtual warehouse
Answer: B
Explanation:
https://docs.snowflake.com/en/user-guide/warehouses-
overview.html#:~:text=Similarly%2C%20auto%2Dresume%20ensures%20that,individual%
20clusters%20in%20the%20warehouse.
Question: 92
Which of the following statements describes a benefit of Snowflake�s separation of compute and storage? (Choose all
that apply.)
A. Growth of storage and compute are tightly coupled together
B. Storage expands without the requirement to add more compute
C. Compute can be scaled up or down without the requirement to add more storage
D. Multiple compute clusters can access stored data without contention
Answer: B,C,D
Explanation:
Reference: https://towardsdatascience.com/why-you-are-throwing-money-away-if-your-cloud-data-warehousedoesnt-
separate-storage-and-compute-65d2dffd450f
Question: 93
Which interfaces can be used to create and/or manage Virtual Warehouses?
A. The Snowflake Web Interface (UI)
B. SQL commands
C. Data integration tools
D. All of the above
Answer: D
Explanation:
Reference: https://docs.snowflake.com/en/user-guide/warehouses.html
Question: 94
True or False: Some queries can be answered through the metadata cache and do not require an active Virtual
Warehouse.
A. True
B. False
Answer: A
Explanation:
Some aggregate queries are answered thru micro partitions metadata only not requiring any VW spin ups.
Question: 95
What is the minimum Snowflake edition that provides multi-cluster warehouses and up to 90 days of Time Travel?
A. Standard
B. Premier
C. Enterprise
D. Business Critical Edition
Answer: C
Explanation:
Reference: https://docs.snowflake.com/en/user-guide/intro-editions.html
Question: 96
In which use cases does Snowflake apply egress charges?
A. Data sharing within a specific region
B. Query result retrieval
C. Database replication
D. Loading data into Snowflake
Answer: A
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.
Question: 97
True or False: It is possible to load data into Snowflake without creating a named File Format object.
A. True
B. False
Answer: A
Explanation:
Reference: https://docs.snowflake.com/en/user-guide/data-load-external-tutorial-create-file-format.html
Question: 98
The PUT command: (Choose two.)
A. Automatically creates a File Format object
B. Automatically uses the last Stage created
C. Automatically compresses files using Gzip
D. Automatically encrypts files
Answer: C,D
Explanation:
Reference: https://docs.snowflake.com/en/sql-reference/sql/put.html
Question: 99
What feature can be used to reorganize a very large table on one or more columns?
A. Micro-partitions
B. Clustering keys
C. Key partitions
D. Clustered partitions
Answer: B
Explanation:
https://docs.snowflake.com/en/user-guide/tables-clustering-keys.html
Question: 100
Which command can be used to load data into an internal stage?
A. LOAD
B. copy
C. GET
D. PUT
Answer: D
Explanation:
https://medium.com/@divyanshsaxenaofficial/snowflake-loading-unloading-of-data-part-1-internal-stages-7121cc3cc9
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