300-420 Free Practice Test

An engineer must design a VPN solution for a company that has multiple branches connecting to a main office. What are two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose two.)

1. A. support for AES 256-bit encryption
2. B. greater scalability
3. C. support for anycast gateway
4. D. lower traffic overhead
5. E. dynamic spoke-to-spoke tunnels

Correct Answer: BE

Which design consideration must be made when using IPv6 overlay tunnels?

1. A. Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.
2. B. Overlay tunnels should only be considered as a transition technique toward a permanent solution.
3. C. Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.
4. D. Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.

Correct Answer: C

Which feature must be incorporated into the campus LAN design to enable Wake on LAN?

1. A. dynamic ARP Inspection Snooping on layer 2 devices
2. B. directed broadcasts on layer 3 devices
3. C. proxy ARP on layer 3 devices
4. D. DHCP Snooping on layer 2 devices

Correct Answer: B

Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?

1. A. External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.
2. B. GRE tunneling can be configured between fabric edges to connect one VN to another.
3. C. SGTs can be used to permit traffic from one VN to another.
4. D. Route leaking can be used on the fabric border nodes to inject routes from one VN to another.

Correct Answer: B

When a network is designed using IS-IS protocol, which two circuit types are supported? (Choose two.)

1. A. nonbroadcast multiaccess
2. B. multiaccess
3. C. point-to-multipoint
4. D. nonbroadcast
5. E. point-to-point

Correct Answer: BE