Free Cisco 300-420 Exam Questions

Question 1

Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?

A : Make R31 an L1 router.

B : Make R3 an L1L2 router

C : Make Area 0 L2-only

D : Make R11 an L2 router.

Answer: B

Question 2

Refer to the exhibit A network administrator plans to announce the site subnets to the WAN using route summarization instead of announcing every subnet. What is the smallest summary route that should be used to encompass all subnets at the site?

A : 2001:DB8:ABCD:0003::/60

B : 2001:DB8::732

C : 2001:DB8:ABCD::760

D : 2001 DB8 ABCD /64

Answer: C

Question 3

A customer’s environment includes hosts that support IPv6-only. Several of these hosts must communicate with a public web server that has only IPv4 domain name resolution. Which solution should the customer use in this environment?

A : utilize NAT64 to translate the addresses

B : Implement NAT44 at the edge of the customer network

C : use 6to4 and a tunnel to translate the addresses

D : implement 6PE to resolve hostname resolution

Answer: A

Question 4

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

A : External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.

B : GRE tunneling can be configured between fabric edges to connect one VN to another.

C : SGTs can be used to permit traffic from one VN to another.

D : Route leaking can be used on the fabric border nodes to inject routes from one VN to another.

Answer: B

Question 5

Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?

A : Make R31 an L1 router.

B : Make R3 an L1L2 router

C : Make Area 0 L2-only

D : Make R11 an L2 router.

Answer: B