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Snowflake SnowPro Core Recertification Practice Test

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

SnowFlake COF-R02 Snowflake SnowPro Core Recertification

- Domain 1: Snowflake AI Data Cloud Features and Architecture (25%)

- key features of the Snowflake AI Data Cloud.

- Elastic storage
- Elastic compute
- Snowflake's three distinct layers
- Cloud partner categories
- Overview of Snowflake editions

- tools and user interfaces.

- Snowsight
- SnowSQL
- Snowflake connectors
- Snowflake drivers
- Snowpark
- SnowCD

- catalog and objects.

- Databases
- Stages
- Schema types
- Table types
- View types
- Data types
- User Defined Functions (UDFs)
- User Defined Table Functions (UDTFs)
- Stored procedures
- Streams
- Tasks
- Pipes
- Shares
- Sequences

- storage concepts.

- Micro-partitions
- Data clustering
- Data storage monitoring

- Domain 2: Account Access and Security (20%)

- security principles.

- Network security and policies
- Multi-Factor Authentication (MFA)
- Federated authentication
- Key pair authentication
- Single Sign-On (SSO)

- Define the entities and roles that are used in Snowflake.

- Overview of access control

- Access control frameworks
- Access control privileges

- how privileges can be granted and revoked
- Explain role hierarchy and privilege inheritance

- data governance capabilities in Snowflake.

- Accounts
- Organizations
- Secure views
- Secure functions
- Information schemas
- Access history

- Tracking read/write operations

- Overview of row/column-level security
- Object tags

- Domain 3: Performance Concepts (15%)

- Explain the use of the Query Profile.

- Explain plans
- Data spilling
- Use of the data cache
- Micro-partition pruning
- Query history

- Explain virtual warehouse configurations.

- Types of warehouses
- Multi-clustering warehouses

- Scaling policies
- Scaling modes

- Warehouse sizing
- Warehouse settings and access

- virtual warehouse performance tools.

- Monitoring warehouse loads
- Scaling up compared to scaling out
- Resource monitors
- Query acceleration service

- Optimize query performance.

- Describe the use of materialized views
- Use of specific SELECT commands
- Clustering
- Search optimization service
- Persisted query results
- Understanding the impact of different types of caching

- Metadata cache
- Result cache
- Warehouse cache

- Domain 4: Data Loading and Unloading (10%)

- Define concepts and best practices that should be considered when loading data.

- Stages and stage types
- File size and formats
- Folder structures
- Ad hoc/bulk loading
- Snowpipe

- different commands used to load data and when they should be used.

- CREATE STAGE
- CREATE FILE FORMAT
- CREATE PIPE
- CREATE EXTERNAL TABLE
- COPY INTO
- INSERT/INSERT OVERWRITE
- PUT
- VALIDATE

- Define concepts and best practices that should be considered when unloading data.

- File size and formats
- Overview of compression methods
- Empty strings and NULL values
- Unloading to a single file
- Unloading relational tables

- different commands used to unload data and when they should be used.

- GET
- LIST
- COPY INTO
- CREATE STAGE
- CREATE FILE FORMAT

- Domain 5: Data Transformations (20%)

- Explain how to work with standard data.

- Estimation functions
- Sampling

- trial command
- /TABLESAMPLE command
- Sampling methods

- Fraction-based
- Fixed-size

- Supported function types

- System functions
- Table functions
- External functions
- User-Defined Functions (UDFs)

- Stored procedures
- Streams
- Tasks

- Explain how to work with semi-structured data.

- Supported data formats, data types, and sizes
- VARIANT column
- Flattening the nested structure

- FLATTEN command
- LATERAL FLATTEN command

- Semi-structured data functions

- ARRAY/OBJECT creation and manipulation
- Extracting values
- Type predicates

- Explain how to work with unstructured data.

- Define and use directory tables
- SQL file functions

- Types of URLs available to access files

- the purpose of User-Defined Functions (UDFs) for data analysis

- Domain 6: Data Protection and Data Sharing (10%)

- Continuous Data Protection with Snowflake.

- Time Travel
- Fail-safe
- Data encryption
- Cloning
- Replication

- data sharing capabilities.

- Account types
- Snowflake Marketplace
- Data Exchange
- Access control options

- DDL commands to create and manage shares
- Privileges required for working with shares

- Secure Data Sharing (for example, Direct Share, Listing)

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SnowFlake
COF-R02
Snowflake SnowPro Core Recertification
https://killexams.com/pass4sure/exam-detail/COF-R02
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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