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Why might wire encryption impact Hadoop cluster performance?

hard📝 Conceptual Q10 of 15
Hadoop - Security
Why might wire encryption impact Hadoop cluster performance?
AEncryption adds CPU overhead during data transfer
BEncryption increases disk I/O operations
CEncryption causes network packet loss
DEncryption disables data caching
Step-by-Step Solution
Solution:

  1. Step 1: Understand encryption overhead

    Encrypting and decrypting data requires CPU resources, adding overhead.

  2. Step 2: Rule out unrelated effects

    Encryption does not increase disk I/O, cause packet loss, or disable caching.

  3. Final Answer:

    Encryption adds CPU overhead during data transfer -> Option A

  4. Quick Check:

    Encryption CPU cost affects performance = D [OK]
Quick Trick: Encryption uses CPU, possibly slowing transfers [OK]
Common Mistakes:
  • Blaming encryption for disk or network errors
  • Assuming encryption disables caching
  • Confusing encryption overhead with packet loss

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