350-701 Question #138: Real Exam Question with Answer & Explanation

The correct answer is D: FlexVPN uses IKEv2. DMVPN uses IKEv1 or IKEv2.. A key difference is that FlexVPN exclusively uses IKEv2 for negotiations, whereas DMVPN supports both IKEv1 and IKEv2.

Submitted by rachelw· Mar 30, 2026Network Security

Question

What is a difference between FlexVPN and DMVPN?

Options

AFlexVPN uses IKEv1 or IKEv2. DMVPN uses only IKEv2
BDMVPN uses only IKEv1 FlexVPN uses only IKEv2.
CDMVPN uses IKEv1 or IKEv2. FlexVPN only uses IKEv1
DFlexVPN uses IKEv2. DMVPN uses IKEv1 or IKEv2.

Explanation

A key difference is that FlexVPN exclusively uses IKEv2 for negotiations, whereas DMVPN supports both IKEv1 and IKEv2.

Common mistakes.

A. This is incorrect because DMVPN supports both IKEv1 and IKEv2, not only IKEv2.
B. This is incorrect because DMVPN supports both IKEv1 and IKEv2, and FlexVPN uses only IKEv2, not only IKEv1.
C. This is incorrect because FlexVPN uses only IKEv2, not only IKEv1.

Concept tested. FlexVPN vs. DMVPN IKE version support

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_flexvpn/configuration/xe-3s/sec-flex-vpn-xe-3s-book/flex-vpn-cfg.html

Topics

#FlexVPN#DMVPN#IKEv1#IKEv2

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