SSH negotiates a variety of algorithms during its implementation. So which of the following are included in the algorithm categories used by SSH? (Multiple choice) A. Shortest Path Algorithm for…

Question

Options

• AShortest Path Algorithm for Determining the Shortest Communication Path

• A
  100% (37)

Explanation

There's a significant issue with this question as presented: option A is factually incorrect as a correct answer. The "Shortest Path Algorithm" (e.g., Dijkstra's) is a routing/graph algorithm used in protocols like OSPF - it has no role in SSH's algorithm negotiation.

What SSH actually negotiates: SSH establishes a secure channel by negotiating across four real algorithm categories:

1. Key Exchange (KEX) - e.g., Diffie-Hellman, ECDH (establishes shared session key)
2. Host Key / Asymmetric - e.g., RSA, Ed25519 (server authentication)
3. Symmetric Encryption (Cipher) - e.g., AES-256-CTR, ChaCha20 (bulk data encryption)
4. MAC (Message Authentication Code) - e.g., HMAC-SHA2 (integrity verification)
5. Compression - e.g., zlib (optional)

Memory tip: Use the acronym KE-HA-CE-MAC → Key Exchange, Host Auth, Cipher/Encryption, MAC.

My recommendation: This question appears malformed - either the choices were truncated, or the answer key is wrong. If you're studying for an exam, focus on the four real SSH algorithm categories above. If this came from a practice test, flag it as a potential error, because teaching that "Shortest Path" is part of SSH would be incorrect.

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