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What is the main advantage of using SSE-KMS over SSE-S3 for S3 encryption?

easy📝 Conceptual Q2 of 15
AWS - S3 Fundamentals
What is the main advantage of using SSE-KMS over SSE-S3 for S3 encryption?
ALower cost for encryption
BAbility to audit key usage and control access
CNo need to manage encryption keys
DEncryption happens on the client side
Step-by-Step Solution
Solution:

  1. Step 1: Identify SSE-KMS features

    SSE-KMS allows detailed control over keys and auditing of their usage via AWS Key Management Service.

  2. Step 2: Compare with SSE-S3

    SSE-S3 manages keys automatically but does not provide audit logs or fine-grained access control.

  3. Final Answer:

    SSE-KMS provides audit and access control features -> Option B

  4. Quick Check:

    SSE-KMS = audit and control [OK]
Quick Trick: SSE-KMS adds auditing and access control to encryption [OK]
Common Mistakes:
MISTAKES
  • Assuming SSE-KMS is cheaper than SSE-S3
  • Thinking SSE-KMS removes key management completely
  • Confusing client-side encryption with SSE-KMS

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