Which of the following technologies can be used to establish an enterprise wide-area VPN? (Multiple choice)

Question

Options

• AL2TP VPN
• BIPsec VPN
• CMPLS VPN
• DDSVPN

• A
  100% (27)

Explanation

All four options are correct because each represents a distinct, proven technology capable of delivering enterprise-grade wide-area VPN connectivity - the question tests breadth of knowledge, not elimination.

• L2TP (Layer 2 Tunneling Protocol) creates tunnels across public networks and is almost always paired with IPsec for encryption, making it suitable for remote-access and site-to-site enterprise WAN VPNs.
• IPsec is a foundational suite of protocols providing authentication and encryption at Layer 3, and is the most common choice for site-to-site enterprise WAN VPNs.
• MPLS VPN operates at the service-provider level, using label switching to carve out logically private paths across the provider's infrastructure - the dominant choice for large-scale enterprise WANs.
• DSVPN (Dynamic Smart VPN, a Huawei technology) enables scalable hub-and-spoke topologies over public WAN links without requiring static tunnel configurations for every spoke.

Since there are no wrong choices here, the real exam trap is assuming only one or two of these "count" as true enterprise WAN VPNs.

Memory tip: Think "Layers, Labels, Dynamic" - L2TP tunnels at Layer 2, IPsec secures at Layer 3, MPLS uses Labels across a provider cloud, and DSVPN handles Dynamic spoke scaling. Any of these can span a wide-area enterprise network, so when the question says "can be used," all qualify.

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