1. What type of VPN can be established with a web browser using HTTPS?
- IPsec
- Client-based VPN
- Site-to-Site VPN
- Clientless VPN
Explanation: A clientless VPN is secured using a web browser SSL connection. The SSL connection is first established, and then HTTP data is exchanged over the connection. SSL and HTTP combined are called HTTPS.
2. Which feature describes SSL VPNs?
- All IP-based applications are supported
- Only requires a web browser on a host
- Specific devices with specific configurations can connect
- Uses two-way authentication with shared keys or digital certificates
Explanation: SSL VPNs only require a web browser to connect and can use one-way authentication. However, they are typically limited to web-based applications and file sharing.
3. What type of protocol is GRE?
- Security protocol
- Passenger protocol
- Carrier protocol
- Transport protocol
Explanation: GRE is carrier protocol that encapsulates the original passenger protocol for transport through a tunnel. Typically used for multicast or broadcast traffic, GRE does not provide security.
4. What type of VPN enables an enterprise to rapidly scale secure access across the organization?
- DMVPN
- Remote-access VPN
- Site-to-Site VPN
- MPLS VPN
Explanation: DMVPN can be used with multiple VPNs in an easy, dynamic, and scalable manner. DMVPN simplifies the VPN tunnel configuration and provides a flexible option to connect a central site with branch sites.
5. What type of VPN enables an enterprise to emulate an Ethernet multiaccess LAN with remote sites?
- DMVPN
- Remote-access VPN
- Site-to-Site VPN
- MPLS VPN
Explanation: In a Layer 2 MPLS VPN, the provider deploys a Virtual Private LAN Service (VPLS) to emulate an Ethernet multiaccess LAN segment over the MPLS network. No routing is involved. The customer’s routers effectively belong to the same multiaccess network.