Snowflake COF-C02 Practice Test - Questions Answers, Page 28

To optimize query performance in Snowflake, users can cluster a table, which organizes the data in a way that minimizes the amount of data scanned during queries.Additionally, enabling the search optimization service can improve the performance of selective point lookup queries on large tables34.

The minimum privilege required on an external stage for any role to access unstructured data files using a file URL in the GET REST API is READ. This allows the role to retrieve or download data files from the stage.

The search optimization service and automatic clustering are features that can improve the performance of queries returning a small subset of rows from a large table. The search optimization service is designed for low-latency point lookup queries, while automatic clustering organizes data in micro-partitions based on specific dimensions to reduce the amount of data scanned during queries.

The pre-signed URL type allows users or applications to download or access files directly from a Snowflake stage without authentication. This URL type is open and can be used without needing to authenticate into Snowflake or pass an authorization token.

Resource monitors in Snowflake can be configured at the account and virtual warehouse levels. They are used to track credit usage and control costs associated with running virtual warehouses. When certain thresholds are reached, resource monitors can trigger actions such as sending alerts or suspending warehouses to prevent excessive credit consumption.References:[COF-C02] SnowPro Core Certification Exam Study Guide

Snowflake data providers can share data residing in different databases through secure views. Secure views allow for the referencing of objects such as schemas, tables, and other views contained in one or more databases, as long as those databases belong to the same account. This enables providers to share data securely and efficiently with consumers.References:[COF-C02] SnowPro Core Certification Exam Study Guide

The details section of a Query Profile in Snowflake provides users with various statistics and information about the execution of a query. One of the key pieces of information that can be determined from this section is the total duration of the query, which helps in understanding the performance and identifying potential bottlenecks.References:[COF-C02] SnowPro Core Certification Exam Study Guide

According to my knowledge, a security administrator can create multiple network policies, but only one network policy can be active for an account or specific user at any given time. This ensures that there is a clear and consistent policy being applied without conflicts.References:Based on my internal knowledge as of 2021.

In Snowflake, a tabular User-Defined Function (UDF) is defined with a return clause that includes the keyword ''TABLE.'' This indicates that the UDF will return a set of rows, which can be used in the FROM clause of a query.References:Based on my internal knowledge as of 2021.