Free Cisco 300-420 Exam Practice Questions 2026

Refer to the exhibit. Which two technologies must an engineer include in the design to prevent Layer 2 loops in this topology? Choose two.

A customer reports that each time a networking component fails, OSPF recalculates the backup path, with causes a short outage. Which solution must the customer implement to improve this situation? 

Refer to the exhibit. An architect is designing a network that requires route redistribution. The design must prevent route feedback and the creation of routing loops. The OSPF domain is using default metrics, and the IS-IS domain is using narrow metrics. Which solution must the architect select?

Refer to the exhibit. As part of a design review of redistribution, a client requested that R2 be preferred over R3 for traffic passing toward the EIGRP domain. Which method meets this design requirement?

An engineer uses Postman and YANG to configure a router with:

OSPF process ID 200

network 172.16.10.128/26 enabled for Area 0

Which get-config reply verifies that the model set was designed correctly?