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Snowflake COF-C02 Exam Syllabus Topics:

Section	Objectives
Data Transformations and Querying	- SQL querying in Snowflake - Semi-structured data handling (VARIANT, JSON, Parquet)
Data Loading and Unloading	- Bulk loading using stages and COPY INTO - Data unloading and external stages
Snowflake Architecture and Overview	- Snowflake architecture concepts (cloud data platform, separation of storage and compute) - Virtual warehouses and resource scaling concepts
Data Protection, Security, and Performance	- Role-based access control (RBAC) - Time Travel and Fail-safe concepts - Query performance optimization basics

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Snowflake SnowPro Core Certification Exam Sample Questions (Q168-Q173):

NEW QUESTION # 168
A Snowflake user executed a query and received the results. Another user executed the same query 4 hours later. The data had not changed.
What will occur?

A. The virtual warehouse that is defined at the session level will be used to read all data.
B. The default virtual warehouse will be used to read all data.
C. No virtual warehouse will be used, data will be read from the result cache.
D. No virtual warehouse will be used, data will be read from the local disk cache.

Answer: C

Explanation:
Snowflake maintains a result cache that stores the results of every query for 24 hours. If the same query is executed again within this time frame and the data has not changed, Snowflake will retrieve the data from the result cache instead of using a virtual warehouse to recompute the results2.

NEW QUESTION # 169
Which Snowflake function will parse a JSON-null into a SQL-null?

A. TO_VARIANT
B. TO_CHAR
C. STRIP NULL VALUE
D. TO_VARCHAR

Answer: C

Explanation:
The STRIP_NULL_VALUE function in Snowflake is used to convert a JSON null value into a SQL NULL value1.

NEW QUESTION # 170
For which use case will transient tables be most cost-effective?

A. The table data is frequently shared with external accounts.
B. The table data is frequently accessed and modified.
C. The table data requires long-term storage.
D. The table data does not require Fail-safe.

Answer: D

Explanation:
The correct answer is A. The table data does not require Fail-safe .
Transient tables are designed for data that does not need the same level of data recovery protection as permanent tables. Unlike permanent tables, transient tables do not have a Fail-safe period.
Why A is correct:
Fail-safe storage can add cost because Snowflake retains historical data for recovery by Snowflake support after the Time Travel retention period ends. Since transient tables do not have Fail-safe, they can reduce storage costs for data that does not require this additional protection.
Common use cases include:
Temporary ETL data
Staging data
Intermediate transformation data
Reproducible data
Non-critical working data
Why the other options are incorrect:
B). Long-term critical storage is usually better suited for permanent tables because they support Fail-safe.
C). Frequent access and modification alone does not make a transient table the best cost choice. The key factor is whether Fail-safe is needed.
D). Sharing data with external accounts is not the primary cost-effective use case for transient tables.
Official Snowflake documentation reference:
Snowflake documentation explains that transient tables persist until explicitly dropped, support Time Travel with limited retention, and do not have a Fail-safe period.
Reference: Snowflake Documentation - Transient tables; Snowflake Documentation - Understanding and viewing Fail-safe; SnowPro Core Study Guide - Snowflake Architecture.

NEW QUESTION # 171
Which Snowflake storage object can be used to store data beyond a single session and will not incur Fail-safe costs?

A. Temporary table
B. External table
C. Permanent table
D. Transient table

Answer: D

NEW QUESTION # 172
What affects whether the query results cache can be used?

A. If the query contains a deterministic function
B. If the referenced data in the table has changed
C. If multiple users are using the same virtual warehouse
D. If the virtual warehouse has been suspended

Answer: D

NEW QUESTION # 173
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