Which encryption hashing algorithm does NTP use for authentication?

Question

Options

• ASSL
• BMD5
• CAES128
• DAES256

• A
  6% (2)
• B
  91% (32)
• D
  3% (1)

Explanation

MD5 is the hashing algorithm used by NTP (Network Time Protocol) for authentication. NTP uses MD5 (Message Digest 5) to create a cryptographic hash of the message, allowing NTP peers to verify the authenticity and integrity of time synchronization messages through a shared secret key.

Why the distractors are wrong:

• SSL (A) is a secure transport protocol, not a hashing algorithm - it's used for encrypted communications (e.g., HTTPS), not NTP authentication
• AES128 (C) and AES256 (D) are symmetric encryption algorithms, not hashing algorithms - while AES is used in many security protocols, NTP specifically relies on MD5 for its authentication mechanism

Memory Tip: Think "NTP = No Time for Prolonged hashing" - NTP needs a fast, lightweight hash, and MD5 fits that role perfectly. Associate "NTP" with "MD5" - both are older, straightforward protocols that prioritize speed and simplicity over modern security strength.

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