CCNP - Cisco Certified Network Professional Practice Questions: VPN Technologies Domain

Published: July 31, 2025 | 20 min read

Test your CCNP - Cisco Certified Network Professional knowledge with 10 practice questions from the VPN Technologies domain. Includes detailed explanations and answers.

CCNP - Cisco Certified Network Professional Practice Questions

Master the VPN Technologies Domain

Test your knowledge in the VPN Technologies domain with these 10 practice questions. Each question is designed to help you prepare for the CCNP - Cisco Certified Network Professional certification exam with detailed explanations to reinforce your learning.

Question 1

For a company running a hybrid cloud, you need to ensure secure data transfer between the on-premises network and AWS. Which VPN type is best suited for this scenario?

A) Client-based SSL VPN

B) IPsec Direct Connect

C) Site-to-Site IPsec VPN

D) L2TP VPN

Show Answer & Explanation

Correct Answer: C

Explanation: A Site-to-Site IPsec VPN is widely used for secure data transfer between on-premises networks and cloud providers like AWS.

Question 2

In a dual-homed remote site connected to two different MPLS providers, you need to ensure that traffic prefers Provider A but can failover to Provider B. Which BGP attribute should be manipulated to achieve this?

A) AS Path

B) Local Preference

C) MED

D) Weight

Show Answer & Explanation

Correct Answer: B

Explanation: CORRECT: Local Preference is used to influence outbound traffic decisions in a multi-homed environment. AS Path influences inbound traffic, not outbound. MED is used for influencing inbound traffic from the same AS. Weight is local to the router and not propagated to other routers.

Question 3

An enterprise network is configured with DMVPN using OSPF as the routing protocol. The network engineer notices that OSPF routes are not being advertised correctly over the DMVPN tunnels. What could be the cause of this issue?

A) The OSPF network type on the tunnel interface is set to point-to-multipoint.

B) The DMVPN tunnel interface is missing the 'ip nhrp map multicast dynamic' command.

C) The OSPF process ID is not matching on both ends of the tunnel.

D) The OSPF cost is set too high on the tunnel interface.

Show Answer & Explanation

Correct Answer: B

Explanation: CORRECT: The 'ip nhrp map multicast dynamic' command is needed to allow multicast traffic, such as OSPF, to be correctly forwarded over DMVPN tunnels. The point-to-multipoint network type is valid for DMVPN. OSPF process ID does not need to match on both ends. OSPF cost affects route selection, not advertisement.

Question 4

In a large enterprise network, you are tasked with configuring an MPLS Layer 3 VPN between two sites. The provider has enabled MPLS on all routers, and you need to configure the VPN on your PE routers. What is the first step in configuring this MPLS L3VPN?

A) Configure MP-BGP on the PE routers.

B) Enable MPLS on all CE routers.

C) Configure VRFs on the PE routers.

D) Assign a unique route distinguisher to each VRF.

Show Answer & Explanation

Correct Answer: C

Explanation: CORRECT: Configuring VRFs on the PE routers is the first step to segregate the routing tables for different VPNs. Configuring MP-BGP is necessary but not the first step. MPLS is not required on CE routers for MPLS L3VPNs. Assigning a route distinguisher is part of VRF configuration, but not the very first step.

Question 5

In an enterprise network using FlexVPN, which component is responsible for managing the security associations and policies?

A) IKEv2

B) RADIUS

C) NHRP

D) GRE

Show Answer & Explanation

Correct Answer: A

Explanation: CORRECT: IKEv2 is used in FlexVPN to manage security associations and policies. RADIUS is used for authentication, not for managing security associations. NHRP is used for routing, not for security management. GRE is a tunneling protocol and does not manage security associations.

Question 6

You have configured a DMVPN network and notice that spoke routers are not able to communicate with each other. What could be the cause of this issue?

A) The hub router is not configured with the correct NHRP mappings.

B) The spoke routers do not have a default route to the hub.

C) The spoke routers are missing the 'ip nhrp network-id' command.

D) The hub router is not configured with 'ip nhrp redirect'.

Show Answer & Explanation

Correct Answer: D

Explanation: CORRECT: 'ip nhrp redirect' is necessary on the hub to allow spoke-to-spoke communication. Incorrect NHRP mappings would prevent any communication. Spokes need a route to the hub, but this does not directly affect spoke-to-spoke communication. The network-id is necessary but not specifically related to spoke-to-spoke issues.

Question 7

Which command verifies the phase 1 negotiation status of an IPsec VPN tunnel on a Cisco router?

A) show crypto isakmp sa

B) show crypto ipsec sa

C) show crypto session

D) show ip route

Show Answer & Explanation

Correct Answer: A

Explanation: The command 'show crypto isakmp sa' is used to verify the status of phase 1 ISAKMP SAs. Phase 1 is responsible for establishing the initial secure communication channel, which is then used to negotiate phase 2 parameters. 'show crypto ipsec sa' checks phase 2, 'show crypto session' provides an overview of all sessions, and 'show ip route' is unrelated to VPN status.

Question 8

You are troubleshooting a site-to-site IPsec VPN that is not establishing between two endpoints. The logs indicate a mismatch in the IKE Phase 1 parameters. Which of the following parameters should you verify for consistency on both endpoints?

A) Encryption algorithm

B) MTU size

C) Tunnel interface IP address

D) OSPF cost

Show Answer & Explanation

Correct Answer: A

Explanation: CORRECT: The encryption algorithm must match on both endpoints for IKE Phase 1 to succeed. MTU size does not affect IKE Phase 1 negotiations. Tunnel interface IP address is not part of IKE negotiations. OSPF cost is irrelevant to IPsec VPN establishment.

Question 9

Which of the following is a benefit of using FlexVPN in a network?

A) Supports only IPv4

B) Uses only static routing

C) Provides a unified framework for different VPN types

D) Requires GRE for all tunnels

Show Answer & Explanation

Correct Answer: C

Explanation: CORRECT: FlexVPN provides a unified framework for different VPN types. FlexVPN supports both IPv4 and IPv6. FlexVPN supports both static and dynamic routing. FlexVPN does not require GRE for all tunnels.

Question 10

Which technology allows for the creation of a scalable VPN architecture that supports both IPv4 and IPv6 traffic in a single network?

A) MPLS L3VPN

B) DMVPN

C) GETVPN

D) VTI

Show Answer & Explanation

Correct Answer: A

Explanation: CORRECT: MPLS L3VPN supports both IPv4 and IPv6 traffic and provides a scalable VPN architecture. DMVPN supports IPv4 and IPv6 but is not inherently scalable for large networks like MPLS. GETVPN provides encryption but does not inherently support both IPv4 and IPv6 in a single architecture. VTI (Virtual Tunnel Interface) is used for simplifying the configuration of IPsec but is not a scalable VPN architecture.

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About CCNP - Cisco Certified Network Professional Certification

The CCNP - Cisco Certified Network Professional certification validates your expertise in vpn technologies and other critical domains. Our comprehensive practice questions are carefully crafted to mirror the actual exam experience and help you identify knowledge gaps before test day.