In a managed access schema, the schema owner retains the OWNERSHIP privilege of any tables added to the schema.This means that while object owners have certain privileges over the objects they create, only the schema owner can manage privilege grants on these objects1.

To use key pair authentication in Snowflake, you need to set the public key for the user. This allows the user to authenticate using their private key.
Generate Key Pair:Generate a public and private key pair.
Set Public Key:
ALTER USER jsmith SET RSA_PUBLIC_KEY= ' MIIBIjANBgkqh... ' ;
Authentication:The user can now authenticate by signing requests with the corresponding private key.
References:
Snowflake Documentation: Key Pair Authentication & Key Rotation
Snowflake Documentation: ALTER USER

Serverless features in Snowflake are billed based on the time they are used, measured in minutes. The cost is calculated by multiplying the duration of the job by an automatic sizing determined by Snowflake, with a minimum billing increment of one minute. This means that even if a serverless feature is used for less than a minute, it will still be billed for the full minute.

The query acceleration service in Snowflake is designed to benefit queries that involve large scans and selective filters. This service can offload portions of the query processing work to shared compute resources, which can handlethese types of workloads more efficiently by performing morework in parallel and reducing the wall-clock time spent in scanning and filtering2. References: [ COF-C03 ] SnowPro Core Certification Exam Study Guide

To utilize the search optimization service in Snowflake, the correct syntax for granting privileges to a role involves specific commands that include adding search optimization capabilities:
Option C: GRANT ADD SEARCH OPTIMIZATION ON SCHEMA < schema_name > TO ROLE < role > .
This command grants the specified role the ability to implement search optimization at the schema level, which is essential for enhancing search capabilities within that schema.
Options A and B do not include the correct verb " ADD, " which is necessary for this specific type of grant command in Snowflake. Option D incorrectly mentions the database level, as search optimization privileges are typically configured at the schema level, not the database level.
References:Snowflake documentation on the use of GRANT statements for configuring search optimization.