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300-730 · Question #118
300-730 Question #118: Real Exam Question with Answer & Explanation
The correct answer is C: L2VPN. The configuration output shows a Layer 2 VPN (L2VPN) technology, which operates at the data link layer to extend Layer 2 connectivity across a routed network.
Site-to-site Virtual Private Networks on Routers and Firewalls
Question
Refer to the exhibit. Based on the configuration output, what is the VPN technology?
Options
- Asite-to-site
- BDMVPN
- CL2VPN
- Dmulticast VPN
Explanation
The configuration output shows a Layer 2 VPN (L2VPN) technology, which operates at the data link layer to extend Layer 2 connectivity across a routed network.
Common mistakes.
- A. Site-to-site VPN uses IPsec tunnel mode to connect two networks at Layer 3, and its configuration shows crypto maps, transform sets, and access lists - not Layer 2 bridging constructs.
- B. DMVPN is identified by mGRE tunnel interfaces and NHRP configuration, which enable dynamic spoke-to-spoke tunnels - not present in an L2VPN configuration.
- D. Multicast VPN uses MDT or mLDP profiles and VRF-based multicast routing configuration, which is unrelated to Layer 2 forwarding constructs seen here.
Concept tested. Identifying L2VPN technology from configuration output
Reference. https://www.cisco.com/c/en/us/tech/ip/layer-2-vpns-l2vpn/index.html
Topics
#L2VPN#VPN technology identification#site-to-site#exhibit analysis
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