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Exam 350-701 All Questions

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Exam 350-701 topic 1 question 30 discussion

Actual exam question from Cisco's 350-701
Question #: 30
Topic #: 1
[All 350-701 Questions]

Which two key and block sizes are valid for AES? (Choose two.)

  • A. 64-bit block size, 112-bit key length
  • B. 64-bit block size, 168-bit key length
  • C. 128-bit block size, 192-bit key length
  • D. 128-bit block size, 256-bit key length
  • E. 192-bit block size, 256-bit key length
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Suggested Answer: CD 🗳️
Reference:
https://en.wikipedia.org/wiki/Advanced_Encryption_Standard

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Marshpillowz
6 months, 3 weeks ago
Selected Answer: CD
C and D are correct
upvoted 1 times
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sull3y
1 year, 9 months ago
C. 128-bit block size, 192-bit key length D. 128-bit block size, 256-bit key length AES (Advanced Encryption Standard) is a symmetric-key encryption algorithm that supports several key and block sizes. The most commonly used key sizes for AES are 128-bit, 192-bit, and 256-bit. The block size is always fixed at 128-bit. AES-128 uses a 128-bit key length and 128-bit block size AES-192 uses a 192-bit key length and 128-bit block size AES-256 uses a 256-bit key length and 128-bit block size Option A and B are not correct because AES does not support 64-bit block size. Option E is not correct because AES does not support 192-bit block size AES-128, AES-192, and AES-256 are the valid key sizes for AES. The block size is always fixed at 128-bit.
upvoted 3 times
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nomanlands
2 years, 3 months ago
Selected Answer: CD
128 block size is defined in the AES standard
upvoted 1 times
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abdulmalik_mail
2 years, 9 months ago
correct, It's CD
upvoted 3 times
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