Cisco CCNP Enterprise 300-420 Questions & Answers

• Question 191:

  What is the purpose of an edge node in an SD-Access network fabric?

  A. Edge nodes identify and authenticate endpoints and register endpoint information with control plane nodes.

  B. Edge nodes track endpoint IDs to location mappings, along with IPv4, IPv6, or MAC addresses.

  C. Edge nodes are the gateway between the fabric domain and network outside of the fabric.

  D. Edge nodes resolve lookup requests from edge and border nodes to locate destination endpoint IDs.

  Correct Answer: A

• Question 192:

  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?

  A. Native

  B. IEEE

  C. OpenConfig

  D. IETF

  Correct Answer: A

• Question 193:

  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?

  A. dual stack

  B. 6VPE

  C. 6to4

  D. NAT64

  Correct Answer: A

• Question 194:

  Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)

  A. Use Bidirectional Forwarding Detection

  B. Merge all the areas into one backbone area

  C. Tune OSPF parameters

  D. Make all non-backbone areas stub areas

  E. Span the same IP network across multiple areas.

  Correct Answer: AC

• Question 195:

  An engineer is designing an enterprise campus network. The LAN infrastructure consists of switches from multiple vendors, and Spanning Tree must be used as a Layer 2 loop prevention mechanism. All configured VLANs must be grouped in two SIP instances.

  Which standards-based Spanning Tree technology supports this design solution?

  A. MSTP

  B. RSTP

  C. Rapid PVST

  D. STP

  Correct Answer: A

• Question 196:

  Which control-plane technology allows the same subnet to exist across multiple network locations?

  A. LISP

  B. VXLAN

  C. FabricPath

  D. ISE mobility services

  Correct Answer: A

  https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html

• Question 197:

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

  A. Source trees guarantee the minimum amount of network latency for forwarding multicast traffic

  B. Source trees create an optimal path between the source and the receivers

  C. Source trees use a single common root placed at some chosen point in the network

  D. Source trees can introduce latency in packet delivery

  E. Source trees can create suboptimal paths between the source and the receivers

  Correct Answer: AB

• Question 198:

  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?

  A. Utilize BFD and tune the multiplier to 50

  B. Lower the BGP hello interval

  C. Decrease the BGP keepalive timer

  D. Utilize BFD and keep the default BGP timers

  Correct Answer: D

• Question 199:

  Which two routing protocols allow for unequal cost load balancing? (Choose two.)

  A. EIGRP

  B. IS-IS

  C. BGP

  D. OSPF

  E. RIPng

  Correct Answer: AC

• Question 200:

  When a first hop redundancy solution is designed, which protocol ensures that load balancing occurs over multiple routers using a single virtual IP address and multiple virtual MAC addresses?

  A. GLBP

  B. IRDP

  C. VRRP

  D. HSRP

  Correct Answer: A