Security+ Exam Prep Question of the Week

Which layer of the OSI model stack is not secured by SSL or TLS?

  1. Application
  2. Presentation
  3. Session
  4. Transport

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The correct answer is 4.

SSL and TLS operate within the payload of TCP. Thus, they operate at the top of the Transport layer. This means they encrypt and protect the content or payload of Transport layer protocols, but not the headers of the Transport layer protocols.

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