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300-420 Exam Dumps - Cisco CCNP Enterprise Questions and Answers

Question # 4

Refer to the exhibit.

A network engineer must improve the current IS-IS environment. The Catalyst switch is equipped with dual supervisors. Each time a stateful switchover occurs, the network experiences unnecessary route recomputation. Which solution addresses this issue if the upstream router does not understand graceful restart messaging?

Options:

A.

Enable IS-IS remote LFA FRR on both devices.

B.

Enable NSR on the switch.

C.

Enable NSF on the switch.

D.

Configure ISIS aggressive timers on both devices.

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Question # 5

Which nonproprietary mechanism can be used to automate rendezvous point distribution in a large PIM domain?

Options:

A.

Embedded RP

B.

BSR

C.

Auto-RP

D.

Static RP

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Question # 6

Which common issue causes intermittent DMVPN tunnel flaps?

Options:

A.

    a routing neighbor reachability issue

B.

    a suboptimal routing table

C.

    interface bandwidth congestion

D.

    that the GRE tunnel to hub router is not encrypted

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Question # 7

Which topology within a network underlay eliminates the need for first hop redundancy protocols while

improving fault tolerance, increasing resiliency, and simplifying the network?

Options:

A.

virtualized topology

B.

routed access topology

C.

Layer 2 topology

D.

logical fabric topology

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Question # 8

Refer to the exhibit. An architect is designing a BGP solution to connect a remote branch to a service provider. There are several prefixes within the branch that the company does not want to be advertised to the internet. Which solution should the architect use to accomplish this?

Options:

A.

Set the BGP Internet community for all prefixes.

B.

Implement the NOPEER community.

C.

Use the BGP No-Advertise community for the prefixes to exclude.

D.

Attach the No-Export community with the prefixes to exclude

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Question # 9

An architect is designing a network that will utilize the spanning tree protocol to ensure a loop-free topology. The network will support an engineering environment where it is necessary for end users to connect their own network switches for testing purposes. Which feature should the architect include in the design to ensure the spanning tree topology is not affected by these rogue switches?

Options:

A.

BPDU Skew Detection

B.

BPDU guard

C.

loop guard

D.

root guard

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Question # 10

Refer to the exhibit. An engineer is planning an IPv4 to IPv6 migration solution for a customer. The routers in the network can support IPv4 and IPv6, except for the DWDM routers. The DWDM routers provide a Layer 2 link in which the routers peer directly with each other across a DWDM circuit. The circuit also provides connectivity between the mail servers. Which IPv6 migration technique must the engineer deploy?

Options:

A.

dual-stack

B.

6to4

C.

ISATAP

D.

6rd

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Question # 11

Refer to the exhibit A customer wants to adopt a dynamic site-to-site VPN solution to secure communication for VoIP, video, and FTP traffic between the remote branches and the headquarters. The customer also wants the branches to communicate directly, thereby reducing traffic at the headquarters location. The solution must consider that the branch routers are limited in available memory. Which VPN solution meets these requirements?

Options:

A.

DMVPN Phase 2 Hub and Spoke design

B.

DMVPN Phase 3 Hub and Spoke design

C.

DMVPN Phase 1 Hub and Spoke design

D.

DMVPN Phase 3 Hierarchical design

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Question # 12

A company is using OSPF between its HQ location and a branch office. HQ is assigned area 0 and the branch office is assigned area 1. The company purchases a second branch office, but due to circuit delays to HQ, it

decides to connect the new branch office to the creating branch office as a temporary measure. The new branch office is assigned area 2. Which OSPF configuration enables all three locations to exchange routes?

Options:

A.

The existing branch office must be configured as a stub area

B.

A virtual link must be configured between the new branch office and HQ

C.

A sham link must be configured between the new branch office and HQ

D.

The new branch office must be configured as a stub area

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Question # 13

Refer to the exhibit.

An architect is designing a routing solution for a company. The new design will add a circuit routers C and D to protect against loss of connectivity to 10.0.4.0/24 during a link failure between routers B and D. Which solution must the architect choose?

Options:

A.

Stub connected

B.

Stub redistributed

C.

Stub receive-only

D.

Stub leak-map

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Exam Code: 300-420
Exam Name: Designing Cisco Enterprise Networks (ENSLD)
Last Update: Feb 23, 2025
Questions: 242
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