The maximum size limit for a record of a VARIANT data type in Snowflake is 16MB. This allows for storing semi-structured data types like JSON, Avro, ORC, Parquet, or XML within a single VARIANT column.References:Based on general database knowledge as of 2021.

In Snowflake's access control model, the default owner of an object is the role that was used to create the object. This role has the OWNERSHIP privilege on the object and can grant access to other roles1

Snowflake's architecture is designed to operate entirely on cloud infrastructure. It uses the core compute and storage services of each cloud provider, which allows it to leverage the scalability and reliability of cloud resources. Snowflake's services are deployed across multiple availability zones within a cloud provider's region to ensure high availability and fault tolerance. References: [ COF-C03 ] SnowPro Core Certification Exam Study Guide

The correct answer is B. The role will lose access to objects that are not granted to the updated role .
Snowflake access control is based on privileges granted to roles. Users receive access to objects through the active role and any inherited roles in the role hierarchy. If privileges are revoked from a role, that role no longer has those privileges unless they are still inherited through another granted role.
Why B is correct:
When privileges are removed from a role, users using that role lose the ability to perform actions that depended on the revoked privileges. Access is controlled by the current set of grants assigned to the role.
Why the other options are incorrect:
A). A role does not retain revoked privileges until a new session starts. Revoked privileges affect access according to Snowflake access control rules.
C). The user does not need to reissue USE ROLE just because privileges were revoked.
D). Snowflake does not terminate active sessions simply because a privilege is removed from a role.
Official Snowflake documentation reference:
Snowflake documentation explains that privileges are granted to roles, roles are granted to users or other roles, and revoking privileges removes the ability to perform the associated actions unless access exists through another role path.
Reference: Snowflake Documentation - Access control overview; Snowflake Documentation - GRANT privileges; Snowflake Documentation - REVOKE privileges; SnowPro Core Study Guide - Security and Access Control.
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