SSCP: Systems Security Certified PractitionerDemo

By ISC · Question Mode

QuestionQ535

Network and Communications Security

Which of the following statements is true about link encryption?

  • A Each entity has a common key with the destination node.
  • B Encrypted messages are only decrypted by the final node.
  • C This mode does not provide protection if anyone of the nodes along the transmission path is compromised.
  • D Only secure nodes are used in this type of transmission.
Explanation

Link encryption protects data on each individual link, but intermediate nodes decrypt and re-encrypt the traffic. Compromise of any node along the transmission path can therefore expose the message.

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