Exams > Cisco > 300-420: Designing Cisco Enterprise Networks (ENSLD)
300-420: Designing Cisco Enterprise Networks (ENSLD)
Page 1 out of 20 pages Questions 1-10 out of 196 questions
Question#1

Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)

  • A. advertise-best-external
  • B. bestpath as-path ignore
  • C. client-to-client reflection
  • D. as-override
  • E. allow-as-in
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DE

Question#2

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
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A

Question#3

DRAG DROP -
An engineer is designing an addressing plan for a small business using a single /24 network. Each department must have its own subnet. Drag and drop the subnets from the left onto the requirements of the department they fulfill on the right. Not all options are used.
Select and Place:

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Question#4

A company is running BGP on a single router, which has two connections to the same ISP. Which BGP feature ensures traffic is load balanced across the two links to the ISP?

  • A. Multihop
  • B. Multipath Load Sharing
  • C. Next-Hop Address Tracking
  • D. AS-Path Prepending
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B

Question#5

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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CD

Question#6

Refer to the exhibit.

An engineer is designing a routing solution for a customer. The design must ensure that a failure of network 10.1.0.0/24, 10.1.2.0/24, 10.2.1.0/24, or 10.2.3.0/24 does not impact the core. It also requires fast convergence time during any link failover in the core or access networks.
Which solution must the engineer select?

  • A. Add aggregation layer between core and access networks.
  • B. Enable graceful restart on routers A and C.
  • C. Enable FRR for the connected networks of routers A and C.
  • D. Enable summarization on routers A and C.
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C

Question#7

Refer to the exhibit.

A network engineer is designing a network for AS100. The design should ensure that all traffic enters AS100 via link 1 unless there is a network failure. In the event of a failure, link 2 should function as the path for incoming traffic. Which solution should the design include?

  • A. Modify the next-hop attribute on R3.
  • B. Use AS-Path prepending on R3.
  • C. Modify the next-hop attribute on R4.
  • D. Use AS-Path prepending on R4.
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D

Question#8

Refer to the exhibit.

An architect must design a solution that uses the direct link between R1 and R2 for traffic from 10.10.10.0/24 toward network 10.10.20.0/24. Which solution should the architect include in the design?

  • A. Configure the OSPF cost of the link to a value lower than 30.
  • B. Lower the Administrative Distance for OSPF area 0.
  • C. Place the link into area 2 and install a new link between R1 and R2 in area 0.
  • D. Configure the link to provide multiarea adjacency.
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A

Question#9

Refer to the exhibit.

An engineer must design a WAN solution so that ISP-1 is always preferred over ISP-2. The path via ISP-2 is considered as a backup and must be used only when the path to ISP-1 is down. Which solution must the engineer choose?

  • A. R1: - Routes advertised to ISP-1: 0x AS-path prepend - Routes received from ISP-1: HIGH local-preference - Routes advertised to R2: no action - Routes received from R2: community NO-EXPORT R2: - Routes advertised to ISP-2:5x AS-path prepend - Routes received from ISP-2: LOW local-preference - Routes advertised to R1: community NO-ADVERTISE - Routes received from R1: no action
  • B. R1: - Routes advertised to ISP-1: 0x AS-path prepend - Routes received from ISP-1: HIGH local-preference - Routes advertised to R2: community NO-EXPORT - Routes received from R2: no action R2: - Routes advertised to ISP-2: 5x AS-path prepend - Routes received from ISP-2: LOW local-preference - Routes advertised to R1: no action - Routes received from R1: no action
  • C. R1: - Routes advertised to ISP-1: 0x AS-path prepend - Routes received from ISP-1: LOW local-preference - Routes advertised to R2: community NO-ADVERTISE - Routes received from R2: no action R2: - Routes advertised to ISP-2: 5x AS-path prepend - Routes received from ISP-2: HIGH local-preference - Routes advertised to R1: no action - Routes received from R1: community NO-ADVERTISE
  • D. R1: - Routes advertised to ISP-1: 5x AS-path prepend - Routes received from ISP-1: LOW local-preference - Routes advertised to R2: community NO-ADVERTISE - Routes received from R2: no action R2: - Routes advertised to ISP-2: 0x AS-path prepend - Routes received from ISP-2: HIGH local-preference - Routes advertised to R1: community NO-EXPORT - Routes received from R1: no action
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B

Question#10

Which feature must be incorporated into the campus LAN design to enable Wake on LAN?

  • A. dynamic ARP Inspection Snooping on layer 2 devices
  • B. directed broadcasts on layer 3 devices
  • C. proxy ARP on layer 3 devices
  • D. DHCP Snooping on layer 2 devices
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B

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