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Why is defense in depth considered a better security strategy than relying solely on perimeter defenses in AWS?

hard📝 Conceptual Q10 of 15
AWS - Advanced Security
Why is defense in depth considered a better security strategy than relying solely on perimeter defenses in AWS?
ABecause AWS does not support perimeter defenses
BBecause perimeter defenses are free and unlimited
CBecause perimeter defenses can be bypassed, so internal layers add protection
DBecause internal layers slow down the system unnecessarily
Step-by-Step Solution
Solution:
  1. Step 1: Understand perimeter defense limits

    Perimeter defenses protect the edge but can be bypassed by attackers.
  2. Step 2: Recognize value of internal layers

    Internal layers protect resources even if perimeter is breached.
  3. Final Answer:

    Because perimeter defenses can be bypassed, so internal layers add protection -> Option C
  4. Quick Check:

    Defense in depth beats perimeter only [OK]
Quick Trick: Internal layers protect if perimeter fails [OK]
Common Mistakes:
  • Thinking perimeter defenses are free
  • Believing internal layers slow system too much
  • Assuming AWS lacks perimeter defenses

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