300-420 Free Practice Test

What are two valid scaling techniques when an EIGRP network is designed that consists of more than 1000 routers? (Choose two.)

1. A. Use structured hierarchical topology with route summarization
2. B. Used sub-second timers
3. C. Use the distribute-list command to filter routes
4. D. Modify delay parameters on the links
5. E. Implement multiple EIGRP autonomous systems

Correct Answer: AE

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 company with multiple service providers wants to speed up BGP convergence time in the event a failure occurs with their primary link. Which approach achieves this goal and does not impact router CPU utilization?

1. A. Utilize BFD and tune the multiplier to 50
2. B. Lower the BGP hello interval
3. C. Decrease the BGP keepalive timer
4. D. Utilize BFD and keep the default BGP timers

Correct Answer: C

How do endpoints inside an SD-Access network reach resources outside the fabric?

1. A. a VRF fusion router is used to map resources in one VN to another VN
2. B. Fabric borders use VRFs to map VNs to VRFs
3. C. SD-Access transit links are used to transport encapsulated traffic from one fabric to another
4. D. A fabric edge is used to de-encapsulate VXLAN traffic to normal IP traffic then transported over the outside network

Correct Answer: D

An engineer is looking for a standards-driven YANG model to manage a multivendor network environment. Which model must the engineer choose?

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

Correct Answer: C