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Snowflake COF-C02: SnowPro Core Certification Exam (COF-C02)

QUESTION 126

- (Topic 5)
What is it called when a customer managed key is combined with a Snowflake managed key to create a composite key for encryption?

Correct Answer: C
Tri-secret secure encryption is a security model employed by Snowflake that involves combining a customer-managed key with a Snowflake-managed key to create a composite key for encrypting data. This model enhances data security by requiring both the customer-managed key and the Snowflake-managed key to decrypt data, thus ensuring that neither party can access the data independently. It represents a balanced approach to key management, leveraging both customer control and Snowflake's managed services for robust data encryption.
References:
✑ Snowflake Documentation: Encryption and Key Management

QUESTION 127

- (Topic 3)
What column type does a Kafka connector store formatted information in a single column?

Correct Answer: D
The Kafka connector stores formatted information in a single column of type VARIANT. This column type is used to store semi-structured data like JSON or Avro, which allows for flexibility in the data structure

QUESTION 128

- (Topic 5)
Which function should be used to insert JSON format string data inot a VARIANT field?

Correct Answer: C
To insert JSON formatted string data into a VARIANT field in Snowflake, the correct function to use isPARSE_JSON. ThePARSE_JSONfunction is specifically designed to interpret a JSON formatted string and convert it into a VARIANT type, which is Snowflake's flexible format for handling semi-structured data like JSON, XML, and Avro. This function is essential for loading and querying JSON data within Snowflake, allowing users to store and manage JSON data efficiently while preserving its structure for querying purposes. This function's usage and capabilities are detailed in the Snowflake documentation, providing users with guidance on how to handle semi-structured data effectively within their Snowflake environments.
References:
✑ Snowflake Documentation: PARSE_JSON

QUESTION 129

- (Topic 2)
Which snowflake objects will incur both storage and cloud compute charges? (Select TWO)

Correct Answer: AD
In Snowflake, both materialized views and transient tables will incur storage charges because they store data. They will also incur compute charges when queries are run against them, as compute resources are used to process the queries. References:
[COF-C02] SnowPro Core Certification Exam Study Guide

QUESTION 130

- (Topic 2)
Assume there is a table consisting of five micro-partitions with values ranging from A to Z. Which diagram indicates a well-clustered table?

Correct Answer: C
A well-clustered table in Snowflake means that the data is organized in such a way that related data points are stored close to each other within the micro-partitions. This optimizes query performance by reducing the amount of scanned data. The diagram indicated by option C shows a well-clustered table, as it likely represents a more evenly distributed range of values across the micro-partitions1.
References = Snowflake Micro-partitions & Table Clustering