What are the two AH modes?

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Multiple Choice

What are the two AH modes?

Explanation:
AH provides data authentication and integrity for IP packets without offering confidentiality. It can operate in two modes. In Transport mode, AH protects only the payload of the original IP packet (the transport layer data), while the IP header remains unprotected. In Tunnel mode, AH protects the entire original IP packet, including its header, and the whole datagram is encapsulated inside a new IP header for transmission. Since these are the two modes supported by AH, the correct answer is that the two AH modes are Tunnel and Transport. Remember that AH focuses on authentication and integrity, not encryption, so terms implying encryption or encapsulation beyond these modes don’t apply to AH itself.

AH provides data authentication and integrity for IP packets without offering confidentiality. It can operate in two modes. In Transport mode, AH protects only the payload of the original IP packet (the transport layer data), while the IP header remains unprotected. In Tunnel mode, AH protects the entire original IP packet, including its header, and the whole datagram is encapsulated inside a new IP header for transmission. Since these are the two modes supported by AH, the correct answer is that the two AH modes are Tunnel and Transport. Remember that AH focuses on authentication and integrity, not encryption, so terms implying encryption or encapsulation beyond these modes don’t apply to AH itself.

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