Free Practice Questions for Cisco 300-420 Exam

An engineer is designing an EIGRP network for a small branch site where there is only one Layer 3 router. The engineer wants the router to advertise the local LAN network to remote EIGRP neighbors without sending any unnecessary multicast messages on the local LAN. Which action should the engineer take?

• Use a static default route for this site instead of EIGRP
• Advertise the local LAN using the network command and the passive-interface feature
• Redistribute the local LAN network using the redistribute connected command
• Advertise the local LAN subnet as a stub network

An engineer is creating a design to enable IPv6 to run on an existing IPv4 IS-IS network. The IPv4 and IPv6 topologies will match exactly, and the engineer plans to use the same router levels for each protocol per interface. Which IS-IS design is required?

• single topology without enabling transition feature
• single topology with transition feature enabled
• multi topology with transition feature enabled
• multi topology without enabling transition feature

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

• Source trees guarantee the minimum amount of network latency for forwarding multicast traffic
• Source trees create an optimal path between the source and the receivers
• Source trees use a single common root placed at some chosen point in the network
• Source trees can introduce latency in packet delivery
• Source trees can create suboptimal paths between the source and the receivers

Which node performs the LISP Map-Server and Map-Resolver functions in the Cisco SD-Access network architecture?

• control plane node
• fabric edge node
• border node
• intermediate node

What are two benefits of designing an SD-WAN network fabric with direct Internet access implemented atevery site? (Choose two.)

• It decreases latency to applications hosted by public cloud service provider.
• It decreases latency on Internet circuits.
• It increases the speed of delivery of site deployments through zero-touch provisioning.
• It increases the total available bandwidth on Internet circuits.
• It alleviates network traffic on MPLS circuits.

Which function do reverse path forwarding mechanisms perform in a multicast deployment?

• They notify the upstream router of multicast traffic.
• They send PIM prune message toward multicast sources.
• They eliminate overlapping multicast addresses
• They prevent loops and duplicate packets.

How is redundancy achieved among Cisco vBond Orchestrators in a Cisco SD-WAN deployment?

• The IP addresses of all Orchestrators are mapped to a single DNS name.
• The closest Orchestrator to each Cisco WAN Edge router is selected.
• Cisco WAN Edge routers are configured with all Orchestrators using their IP addresses and priority.
• A single Cisco Orchestrator is deployed in each network.

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

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

A client is moving to Model-Driven Telemetry and requires periodic updates. What must the network architect consider with this design?

• Updates that contain changes within the data are sent only when changes occur.
• Empty data subscriptions do not generate empty update notifications.
• Periodic updates include a full copy of the data that is subscribed to.
• The primary push update is sent immediately and cannot be delayed.

A customer with an IPv4 only network topology wants to enable IPv6 connectivity while preserving the IPv4 topology services. The customer plans to migrate IPv4 services to the IPv6 topology, then decommission the IPv4 topology. Which topology supports these requirements?

• dual stack
• 6VPE
• 6to4
• NAT64