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350-701 · Question #556

What are two functions of IKEv1 but not IKEv2? (Choose two.)

The correct answer is B. With IKEv1, aggressive mode negotiates faster than main mode. E. With IKEv1, when using aggressive mode, the initiator and responder identities are passed in. https://community.cisco.com/t5/routing/internet-key-exchange-ike-aggressive-mode/td-p/2081283

Submitted by yasin.bd· Mar 30, 2026Network Security

Question

What are two functions of IKEv1 but not IKEv2? (Choose two.)

Options

  • AIKEv1 conversations are initiated by the IKE_SA_INIT message.
  • BWith IKEv1, aggressive mode negotiates faster than main mode.
  • CIKEv1 uses EAP for authentication.
  • DNAT-T is supported in IKEv1 but not in IKEv2.
  • EWith IKEv1, when using aggressive mode, the initiator and responder identities are passed in

How the community answered

(21 responses)
  • A
    5% (1)
  • B
    71% (15)
  • C
    10% (2)
  • D
    14% (3)

Explanation

https://community.cisco.com/t5/routing/internet-key-exchange-ike-aggressive-mode/td-p/2081283

Topics

#IKEv1#IKEv2#aggressive mode#VPN protocol differences

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