300-420 Free Practice Test

Which design consideration must be made when dual vEdge routers are deployed at a branch site?

1. A. Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.
2. B. HSRP priorities must match the OMP routing policy to prefer one vEdge over the other.
3. C. Traffic must be symmetrical as it egresses the vEdges and returns from remote sites for DPI to function properly.
4. D. Configure BFD between vEdge routers to detect sub-second link failures.

Correct Answer: A

A router running ISIS is showing high CPU and bandwidth utilization. An engineer discovers that the router is configured as L1/L2 and has L1 and L2 neighbors. Which step optimizes the design to address the issue?

1. A. Make this router a DIS for each of the interfaces
2. B. Disable the default behavior of advertising the default route on the L1/L2 router
3. C. Configure the router to be either L1 or L2
4. D. Configure each interface as either L1 or L2 circuit type

Correct Answer: D

An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that supports a specific feature relevant only to Cisco NX-OS. Which model must the engineer choose?

1. A. Native
2. B. IEEE
3. C. OpenConfig
4. D. IETF

Correct Answer: D

Which two statements describe source trees in a multicast environment? (Choose two.)

1. A. Source trees guarantee the minimum amount of network latency for forwarding multicast traffic
2. B. Source trees create an optimal path between the source and the receivers
3. C. Source trees use a single common root placed at some chosen point in the network
4. D. Source trees can introduce latency in packet delivery
5. E. Source trees can create suboptimal paths between the source and the receivers

Correct Answer: AB

Which design consideration should be observed when EIGRP is configured on Data Center switches?

1. A. Perform manual summarization on all Layer 3 interfaces to minimize the size of the routing table.
2. B. Prevent unnecessary EIGRP neighborships from forming across switch virtual interfaces.
3. C. Lower EIGRP hello and hold timers to their minimum settings to ensure rapid route reconvergence.
4. D. Configure multiple EIGRP autonomous systems to segment Data Center services and applications.

Correct Answer: A