[Q192-Q211] Get 100% Real COF-C02 Accurate & Verified Answers As Seen in the Real Exam!

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Get 100% Real COF-C02 Exam Questions, Accurate & Verified Answers As Seen in the Real Exam!

COF-C02 Premium Files Updated Nov-2023 Practice Valid Exam Dumps Question

NEW QUESTION # 192
What is an advantage of using an explain plan instead of the query profiler to evaluate the performance of a query?

  • A. An explain plan can be used to conduct performance analysis without executing a query.
  • B. An explain plan will handle queries with temporary tables and the query profiler will not.
  • C. The explain plan output is available graphically.
  • D. An explain plan's output will display automatic data skew optimization information.

Answer: A


NEW QUESTION # 193
A single user of a virtual warehouse has set the warehouse to auto-resume and auto-suspend after 10 minutes.
The warehouse is currently suspended and the user performs the following actions:
1. Runs a query that takes 3 minutes to complete
2. Leaves for 15 minutes
3. Returns and runs a query that takes 10 seconds to complete
4. Manually suspends the warehouse as soon as the last query was completed When the user returns, how much billable compute time will have been consumed?

  • A. 10 minutes
  • B. 4 minutes
  • C. 24 minutes
  • D. 14 minutes

Answer: D


NEW QUESTION # 194
What happens when a cloned table is replicated to a secondary database? (Select TWO)

  • A. Additional costs for storage are charged to a secondary account
  • B. A read-only copy of the cloned tables is stored.
  • C. The replication will not be successful.
  • D. The physical data is replicated
  • E. Metadata pointers to cloned tables are replicated

Answer: A,D

Explanation:
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%


NEW QUESTION # 195
Which of the following describes external functions in Snowflake?

  • A. They contain their own SQL code.
  • B. They call code that is stored inside of Snowflake.
  • C. They are a type of User-defined Function (UDF).
  • D. They can return multiple rows for each row received

Answer: C

Explanation:
Explanation
External functions are user-defined functions that are stored and executed outside of Snowflake.
External functions make it easier to access external API services such as geocoders, machine learning models, and other custom code running outside of Snowflake. This feature eliminates the need to export and reimport data when using third-party services, significantly simplifying your data pipelines.
https://docs.snowflake.com/en/sql-reference/external-functions.html#:~:text=External%20functions%20are%20u


NEW QUESTION # 196
On which of the following cloud platform can a Snowflake account be hosted? Choose 2 answers

  • A. Private Virtual Cloud
  • B. Amazon Web Services
  • C. Microsoft Azure Cloud
  • D. Oracle Cloud

Answer: B,C


NEW QUESTION # 197
Snowflake provides a mechanism for its customers to override its clustering algorithms.
This method is:

  • A. Micro-partitions
  • B. Clustering keys
  • C. Key partitions
  • D. Clustered partitions

Answer: B


NEW QUESTION # 198
Which stages are used with the Snowflake PUT command to upload files from a local file system? (Choose three.)

  • A. External Named Stage
  • B. Schema Stage
  • C. Internal Named Stage
  • D. User Stage
  • E. Table Stage
  • F. Database Stage

Answer: A,B,C


NEW QUESTION # 199
True or False: AWS Private Link provides a secure connection from the Customer's on-premise data center to the Snowflake.

  • A. True
  • B. False

Answer: B


NEW QUESTION # 200
What is a limitation of a Materialized View?

  • A. A Materialized View can only reference up to two tables
  • B. A Materialized View cannot support any aggregate functions
  • C. A Materialized View cannot be defined with a JOIN
  • D. A Materialized View cannot be joined with other tables

Answer: C

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 # 201
Which Snowflake objects can be shared with other Snowflake accounts? (Choose three.)

  • A. Tables
  • B. Roles
  • C. Stored Procedures
  • D. Secure Views
  • E. Secure User-Defined Functions (UDFs)
  • F. Schemas

Answer: B,E,F


NEW QUESTION # 202
What is the default character set used when loading CSV files into Snowflake?

  • A. UTF-16
  • B. ISO S859-1
  • C. ANSI_X3.A
  • D. UTF-8

Answer: D

Explanation:
Explanation
https://docs.snowflake.com/en/user-guide/intro-summary-loading.html#:~:text=For%20delimited%20files%20(C 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 # 203
If file format options are specified in multiple locations, the load operation selects which option FIRST to apply in order of precedence?

  • A. Table definition
  • B. COPY INTO TABLE statement
  • C. Stage definition
  • D. Session level

Answer: B


NEW QUESTION # 204
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 # 205
Which Snowflake technique can be used to improve the performance of a query?

  • A. Clustering
  • B. Fragmenting
  • C. Indexing
  • D. Using INDEX_HINTS

Answer: A


NEW QUESTION # 206
Which of the following statements describes a schema in Snowflake?

  • A. A uniquely identified Snowflake account within a business entity
  • B. A named Snowflake object that includes all the information required to share a database
  • C. A logical grouping of objects that belongs to a single database
  • D. A logical grouping of objects that belongs to multiple databases

Answer: C


NEW QUESTION # 207
True or False: Each worksheet in the Snowflake Web Interface (UI) can be associated with different roles, databases, schemas, and Virtual Warehouses.

  • A. True
  • B. False

Answer: A


NEW QUESTION # 208
Which of the following are true of multi-cluster Warehouses? Select all that apply below.

  • A. A multi-cluster Warehouse can automatically turn itself off after a period of inactivity
  • B. A multi-cluster Warehouse can automatically turn itself on when a query is executed against it
  • C. A multi-cluster Warehouse can add clusters automatically based on query activity
  • D. A multi-cluster Warehouse can scale down when query activity slows

Answer: A,B,C,D


NEW QUESTION # 209
True or False: An active warehouse is required to run a COPY INTO statement.

  • A. True
  • B. False

Answer: A


NEW QUESTION # 210
Which statement about billing applies to Snowflake credits?

  • A. Credits are consumed based on the number of credits billed for each hour that a warehouse runs
  • B. Credits are used to pay for cloud data storage usage
  • C. Credits are billed per-minute with a 60-minute minimum
  • D. Credits are consumed based on the warehouse size and the time the warehouse is running

Answer: D

Explanation:
Explanation
Snowflake credits are used to pay for the consumption of resources on Snowflake. A Snowflake credit is a unit of measure, and it is consumed only when a customer is using resources, such as when a virtual warehouse is running, the cloud services layer is performing work, or serverless features are used.
https://docs.snowflake.com/en/user-guide/what-are-credits.html


NEW QUESTION # 211
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