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300-420 Exam Dumps - Designing Cisco Enterprise Networks (ENSLD)

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Question # 57

What are the two purpose of the RPF check in multicast routing?

A.

to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic back to the source address

B.

to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic to the destination address

C.

to ensure that multicast packets, no matter the interface they arrived on. are forwarded out all interfaces

D.

to ensure that multicast packets are dropped if they arrived on the interface used to route traffic to the destination address

E.

to ensure that multicast packets are dropped if they arrived on the interface used to route traffic back to the source address

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Question # 58

Refer to the exhibit. Currently, the network uses a single-homed solution for connecting to the internet. An engineer must design a more resilient WAN using the internet circuits at each site. The design must provide failover connectivity, support load-sharing of traffic, and QoS. Which solution must the engineer choose?

A.

Get VPN

B.

DMVPN

C.

SD-WAN

D.

IPsec tunnels

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Question # 59

An architect must design a topology for a WAN network that satisfies these requirements:

    Devices must be able to make informed decisions.

    Suboptimal paths are allowed only In case of a failure.

    Backup paths must always be available.

Which topology must the architect select?

A.

partial mesh

B.

hub and spoke

C.

full mesh

D.

Clos

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Question # 60

Which two functions are provided by the Cisco SD-WAN orchestration plane? (Choose two.)

A.

centralized provisioning

B.

primary authentication point

C.

NAT traversal facilitation

D.

Zero Touch Provisioning

E.

troubleshooting and monitoring

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Question # 61

Refer to the exhibit.

An architect must design an IGP solution for an enterprise customer. The design must support:

Physical link flaps should have minimal impact.

Access routers should converge quickly after a link failure.

Which two ISIS solutions should the architect include in the design? (Choose two.)

A.

Use BGP to IS-IS redistribution to advertise all Internet routes in the Level 1 area.

B.

Advertise the IS-IS interface and loopback IP address toward the Internet and data center.

C.

Reduce SPF and PRC intervals to improve convergence time.

D.

Configure all access and aggregate routers to establish Level 1 / Level 2 adjacencies across the network.

E.

Configure access routers to establish a Level 1 adjacency and aggregate routers to establish a Level 1 /

Level 2 adjacency.

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Question # 62

Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?

A.

Make R31 an L1 router.

B.

Make R3 an L1L2 router

C.

Make Area 0 L2-only

D.

Make R11 an L2 router.

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Question # 63

What does the fabric data plane leverage in SD-Access Architecture?

A.

LISP protocol to resolve endpoint-to-location mapping

B.

IS-IS protocol to exchange link-state routing information

C.

MAC-in-IP encapsulation method to transport of the Layer 2 frame

D.

BGP protocol to advertise endpoint prefixes outside of the fabric

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Question # 64

An engineer must design a multicast network for a financial application. Most of the multicast sources also receive multicast traffic (many-to-many deployment model). To better scale routing tables, the design must not use source trees. Which multicast protocol satisfies these requirements?

A.

PIM-SSM

B.

PIM-SM

C.

MSDP

D.

BIDIR-PIM

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