Cisco CCNP Enterprise 300-420 Questions & Answers

• Question 181:

  Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?

  A. External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.

  B. GRE tunneling can be configured between fabric edges to connect one VN to another.

  C. SGTs can be used to permit traffic from one VN to another.

  D. Route leaking can be used on the fabric border nodes to inject routes from one VN to another.

  Correct Answer: A

• Question 182:

  An engineer must design a VPN solution for a company that has multiple branches connecting to a main office. What are two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose two.)

  A. support for AES 256-bit encryption

  B. greater scalability

  C. support for anycast gateway

  D. lower traffic overhead

  E. dynamic spoke-to-spoke tunnels

  Correct Answer: BE

• Question 183:

  A customer is discussing QoS requirements with a network consultant. The customer has specified that endto-end path verification is a requirement. Which QoS solution meets this requirement?

  A. IntServ model with RSVP to support the traffic flows

  B. DiffServ model with PHB to support the traffic flows

  C. marking traffic at the access layer with DSCP to support the traffic flows

  D. marking traffic at the access layer with CoS to support the traffic flows

  Correct Answer: A

• Question 184:

  What is a benefit of using VRRPv3 as compared to VRRPv2?

  A. VRRPv3 supports IPv4 and IPv6

  B. VRRPv3 supports authentication

  C. VRRPv3 supports preemption

  D. VRRPv3 supports stateful switchover

  Correct Answer: A

• Question 185:

  An enterprise customer has these requirements:

  1.

  end-to-end QoS for the business-critical applications and VoIP services based on CoS marking.

  2.

  flexibility to offer services such as IPv6 and multicast without any reliance on the service provider.

  3.

  support for full-mesh connectivity at Layer 2.

  Which WAN connectivity option meets these requirements?

  A. VPWS

  B. MPLS VPN

  C. DMVPN

  D. VPLS

  Correct Answer: D

• Question 186:

  Which NETCONF operation creates filtering that is specific to the session notifications?

  A.

  B.

  C.

  D.

  Correct Answer: A

• Question 187:

  Which OSPF area blocks LSA Type 3, 4 and 5, but allows a default summary route?

  A. normal

  B. stub

  C. NSSA

  D. totally stubby

  Correct Answer: D

• Question 188:

  When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)

  A. IGMPv2

  B. BIDIR-PIM

  C. MP-BGP

  D. MSDP

  E. MLD

  Correct Answer: CD

• Question 189:

  A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is down?

  A. Use EIGRP to establish a neighbor relationship with the main office via L3VPN MPLS and the IPSEC VPN tunnel.

  B. Use BGP with the multipath feature enabled to force traffic via the primary path when available.

  C. Use static routes tied to an IP SLA to prefer the primary path while a floating static route points to the backup connection.

  D. Use OSPF with a passive-interface command on the backup connection.

  Correct Answer: C

• Question 190:

  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