Snowflake SnowPro Core (COF-C03) · 15% practice allocation

Snowflake COF-C03: Snowflake accounts and virtual warehouses Practice Questions

5 free sample questions from the Snowflake accounts and virtual warehouses domain, with answers and explanations. The full COF-C03 bank has 354 questions across 7 domains. Questions are scenario-based and written from the official Snowflake exam guide.

1.

Which parameter controls how long, in seconds, a warehouse waits with no queries running before it automatically suspends?

  • A. STATEMENT_TIMEOUT_IN_SECONDS
  • B. AUTO_RESUME
  • C. AUTO_SUSPEND✓ Correct
  • D. MAX_CONCURRENCY_LEVEL
Explanation

AUTO_SUSPEND is the warehouse parameter that sets the idle-time threshold (in seconds) before the warehouse automatically suspends. STATEMENT_TIMEOUT_IN_SECONDS (option A) controls how long an individual statement is allowed to run before Snowflake cancels it, unrelated to idle suspension. AUTO_RESUME (option B) is a boolean controlling whether the warehouse restarts automatically on a new query, not a timing value. MAX_CONCURRENCY_LEVEL (option D) controls how many statements can execute concurrently on a warehouse cluster, not suspend timing.

2.

A resource monitor can be assigned to which of the following? (Select two.)

  • A. One or more specific virtual warehouses✓ Correct
  • B. The entire account (all warehouses)✓ Correct
  • C. A specific database
  • D. A specific role's grants
Explanation

Resource monitors in Snowflake can be scoped either to the account level (covering all warehouses, tracking overall account credit usage) or assigned to one or more specific virtual warehouses to cap their individual usage. They are not assigned to databases (option C, storage/credit usage for databases isn't governed by resource monitors) or to role grants (option D, which is an RBAC concept unrelated to credit monitoring).

3.

Which of the following is billed based on the average monthly volume of compressed data stored, rather than on compute credits?

  • A. Storage costs✓ Correct
  • B. Serverless feature compute (e.g., automatic clustering, Snowpipe)
  • C. Cloud Services compute
  • D. Virtual warehouse compute
Explanation

Storage is billed separately from compute, based on the average monthly volume of compressed data held in Snowflake (including Time Travel and Fail-safe retained data), typically priced per terabyte. Virtual warehouse compute (option D) and serverless feature compute (option B, such as automatic clustering or Snowpipe) are billed in credits based on the compute consumed, not data volume. Cloud Services compute (option C) is also credit-based, covering metadata operations, query parsing/optimization, and similar, not raw stored volume.

4.

Which warehouse scaling policy is designed to favor conserving credits by waiting longer before starting an additional cluster, potentially allowing more query queuing than the alternative policy?

  • A. Aggressive
  • B. Economy✓ Correct
  • C. Balanced
  • D. Standard
Explanation

The Economy scaling policy is more conservative about starting additional clusters — it waits for a higher confidence that the extra cluster will be fully utilized, favoring credit savings over immediately eliminating queuing. The Standard policy (option D) starts additional clusters more readily to minimize queuing at the cost of using more credits. Options A and C ('Balanced', 'Aggressive') are not Snowflake multi-cluster scaling policy names — Snowflake's two documented policies are Standard and Economy.

5.

Which Snowflake edition is the minimum required to use column-level security features such as dynamic data masking and row access policies?

  • A. Enterprise Edition✓ Correct
  • B. Standard Edition
  • C. Business Critical Edition
  • D. Virtual Private Snowflake (VPS)
Explanation

Dynamic data masking and row access policies are governance features introduced at Enterprise Edition. Standard Edition (option B) includes core warehouse/storage functionality but not these governance controls. Business Critical Edition (option C) and VPS (option D) are higher tiers that add stronger security/compliance features (like HIPAA support and dedicated infrastructure) and include everything Enterprise has, but Enterprise is the minimum edition where masking and row access policies become available, so they are not required.

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