Objective 200.020% of exam

VPN Technologies

300-410 Practice Questions

VPN Technologies covers IPsec site-to-site and remote-access tunnels, DMVPN, FlexVPN, GET VPN, and IKEv1/IKEv2 negotiation on Cisco IOS and IOS XE routers. Questions are scenario-based: you pick protocols, match crypto map or profile parameters on both peers, read debug and show crypto output, and diagnose Phase 1 versus Phase 2 failures.

Full Practice Test →All Objectives

What this objective tests

300-410 VPN Technologies — Key Topics

Be able to configure and verify IPsec, DMVPN, FlexVPN, and GET VPN on Cisco routers, and to isolate whether a tunnel failure is Phase 1 or Phase 2. The most important thing: confirm both peers agree on every IKE and IPsec parameter, including identity and proxy ACLs.

IKEv1/IKEv2 Phase 1 and Phase 2 parameter matching: encryption, hashing, DH group, lifetime, and pre-shared key or certificate authentication
IPsec crypto map, IPsec profile, and transform set configuration, including ACL or VTI-based interesting traffic selection
DMVPN Phase 1/2/3 with NHRP, mGRE, and tunnel protection, plus FlexVPN hub-and-spoke IKEv2 authorization
GET VPN group member and key server roles, including key distribution and the GDOI protocol

Common exam traps

Where candidates lose marks on VPN Technologies

⚠Mismatched Phase 2 transform sets, proxy ACLs, or PFS settings between peers, which lets Phase 1 complete but makes Phase 2 fail with QM FSM errors.
⚠Assuming a single IKEv2 or IPsec profile can serve all spokes without matching authentication, authorization, or local/remote identity settings per peer.
⚠Confusing GET VPN key distribution with IKE: GDOI uses the key server, not standard IPsec IKE, to push encryption keys to group members.

300-410 VPN Technologies — Practice Questions

30 questions from this objective · 20% of your 300-410 exam

Question 2mediummultiple choice

Review the full OSPF breakdown →

A network engineer is configuring a GRE tunnel between two Cisco IOS routers, R1 and R2, to carry OSPF traffic over an ISP network. The tunnel source on R1 is GigabitEthernet0/0 (IP 203.0.113.1), and the tunnel destination is R2's GigabitEthernet0/0 (IP 203.0.113.2). The engineer enters the following commands on R1:

interface Tunnel0
 ip address 10.0.0.1 255.255.255.252

tunnel source GigabitEthernet0/0 tunnel destination 203.0.113.2 tunnel mode gre ip

After configuration, the tunnel interface is up/up, but OSPF adjacency does not form. What is the most likely cause?

Question 3mediummultiple choice

VPN Technologies

300-410 VPN Technologies — Key Topics

Where candidates lose marks on VPN Technologies

300-410 VPN Technologies — Practice Questions

A network administrator is configuring a VRF-aware IPSec VPN on a Cisco IOS router. The router must support overlapping IP addresses for two different customers. The administrator has created VRF CUST-A and VRF CUST-B. Which configuration is required to enable IPSec to operate within a VRF?

A network engineer is implementing DMVPN Phase 2 with EIGRP as the routing protocol. To ensure proper spoke-to-spoke communication, the engineer must configure the hub and spokes correctly. Which two statements about DMVPN Phase 2 with EIGRP are true? (Choose two.)

A network administrator is deploying a GET VPN solution using Cisco Group Encrypted Transport VPN. The administrator wants to ensure that the key server (KS) and group members (GMs) can successfully establish security associations. Which two statements about GET VPN are true? (Choose two.)

A network engineer is configuring a VRF-aware IPsec VPN on a Cisco IOS router. The router has two VRFs: VRF-A and VRF-B. The engineer wants to encrypt traffic from VRF-A to a remote site using IPsec. Which additional configuration is required on the crypto map to support VRF-aware IPsec?

A network engineer is configuring a site-to-site IPsec VPN between two Cisco IOS routers. The engineer wants to ensure that the VPN tunnel remains active even when there is no interesting traffic. Which configuration command should be applied to the crypto map to achieve this?

A network engineer is configuring a GRE tunnel between two routers. The engineer wants to ensure that the tunnel interface remains up even if the physical interface goes down, as long as the tunnel destination is reachable via an alternative path. Which configuration is required?

A network engineer is deploying a DMVPN Phase 3 network with IPsec protection. The engineer wants to ensure that spoke-to-spoke traffic is encrypted and that spokes can dynamically create direct tunnels. Which two configurations are required on the spoke routers? (Choose two.)

A network engineer is deploying a GET VPN solution using Cisco IOS routers. The engineer wants to ensure that the group members can communicate securely over the public internet while maintaining any-to-any connectivity. Which two components are required in a GET VPN deployment? (Choose two.)

An engineer is deploying a site-to-site VPN using Cisco IOS routers. The requirement is to use a technology that provides encryption and supports multicast traffic over the VPN without additional configuration. Which VPN technology should be used?

All 300-410 Objectives

VPN Technologies

300-410 VPN Technologies — Key Topics

Where candidates lose marks on VPN Technologies

300-410 VPN Technologies — Practice Questions

A network administrator is configuring a VRF-aware IPSec VPN on a Cisco IOS router. The router must support overlapping IP addresses for two different customers. The administrator has created VRF CUST-A and VRF CUST-B. Which configuration is required to enable IPSec to operate within a VRF?

A network engineer is implementing DMVPN Phase 2 with EIGRP as the routing protocol. To ensure proper spoke-to-spoke communication, the engineer must configure the hub and spokes correctly. Which two statements about DMVPN Phase 2 with EIGRP are true? (Choose two.)

A network administrator is deploying a GET VPN solution using Cisco Group Encrypted Transport VPN. The administrator wants to ensure that the key server (KS) and group members (GMs) can successfully establish security associations. Which two statements about GET VPN are true? (Choose two.)

A network engineer is configuring a VRF-aware IPsec VPN on a Cisco IOS router. The router has two VRFs: VRF-A and VRF-B. The engineer wants to encrypt traffic from VRF-A to a remote site using IPsec. Which additional configuration is required on the crypto map to support VRF-aware IPsec?

A network engineer is configuring a site-to-site IPsec VPN between two Cisco IOS routers. The engineer wants to ensure that the VPN tunnel remains active even when there is no interesting traffic. Which configuration command should be applied to the crypto map to achieve this?

A network engineer is configuring a GRE tunnel between two routers. The engineer wants to ensure that the tunnel interface remains up even if the physical interface goes down, as long as the tunnel destination is reachable via an alternative path. Which configuration is required?

A network engineer is deploying a DMVPN Phase 3 network with IPsec protection. The engineer wants to ensure that spoke-to-spoke traffic is encrypted and that spokes can dynamically create direct tunnels. Which two configurations are required on the spoke routers? (Choose two.)

A network engineer is deploying a GET VPN solution using Cisco IOS routers. The engineer wants to ensure that the group members can communicate securely over the public internet while maintaining any-to-any connectivity. Which two components are required in a GET VPN deployment? (Choose two.)

An engineer is deploying a site-to-site VPN using Cisco IOS routers. The requirement is to use a technology that provides encryption and supports multicast traffic over the VPN without additional configuration. Which VPN technology should be used?

All 300-410 Objectives