300-420 practice questions 231–240

1. Question 231 · 359 in bank

   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?

   • AMultihop
   • BMultipath Load Sharing
   • CNext-Hop Address Tracking
   • DAS-Path Prepending

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   Answer: B

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2. Question 232 · 359 in bank

   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?

   • AConfigure the OSPF cost of the link to a value lower than 30.
   • BLower the Administrative Distance for OSPF area 0.
   • CPlace the link into area 2 and install a new link between R1 and R2 in area 0.
   • DConfigure the link to provide multiarea adjacency.

   Show answer

   Answer: D

   Explanation

   default path selection preference for OSPF is Intra-Area first before even looking and Inter-Area routes. After alot of reading multi-area adjancy is the only real logical answer

   Source: Adapted from community discussion — SlyNZ99

   References

   • Cisco documentation

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3. Question 233 · 359 in bank

   Which is a benefit of a cloud-based SD-WAN deployment?

   • Ainstant scale
   • Bsecurity never an issue
   • Cmight be required for compliance with industry standards
   • Dcontroller availability never an issue
   • Eagility of change dependent only on your own internal IT processes

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   Answer: A

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4. Question 234 · 359 in bank

   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?

   • AR1: - 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
   • BR1: - 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
   • CR1: - 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
   • DR1: - 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

   Show answer

   Answer: A

   Explanation

   B is correct. - Routes advertised to ISP-1 do NOT need to have AS-path prepend - Routes advertised to ISP-2 need to have AS-path prepend - Routes received from ISP-1 need to have HIGH local-preference - Routes received from ISP-2 need to have LOW local-preference ---> This already rules out C and D - NO-ADVERTISE to internal routers is wrong (R1 and R2 should each know both paths) --> This rules out A.

   Source: Adapted from community discussion — johnu329

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5. Question 235 · 359 in bank

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

   • Adynamic ARP Inspection Snooping on layer 2 devices
   • Bdirected broadcasts on layer 3 devices
   • Cproxy ARP on layer 3 devices
   • DDHCP Snooping on layer 2 devices

   Show answer

   Answer: B

   Explanation

   From CCNP Enterprise Design ENSLD 300-420 Official Cert Guide " If you send WoL packets from remote networks, the routers must be configured to allow directed broadcasts." Answer is B

   Source: Adapted from community discussion — jpml91

   References

   • Cisco documentation

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6. Question 236 · 359 in bank

   

   Refer to the exhibit. An engineer must optimize the traffic flow of the network. Which change provides a more efficient design between the access layer and the distribution layer?

   • AAdd a link between access switch A and access switch B
   • BReconfigure the distribution switch A to become the HSRP Active
   • CChange the link between distribution switch A and distribution switch B to be a routed link
   • DCreate an EtherChannel link between distribution switch A and distribution switch B

   Show answer

   Answer: B

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7. Question 237 · 359 in bank

   Which first hop redundancy protocol ensures that load balancing occurs over multiple routers using a single virtual IP address and multiple virtual MAC addresses?

   • AGLBP
   • BIRDP
   • CVRRP
   • DHSRP

   Show answer

   Answer: A

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8. Question 238 · 359 in bank

   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?

   • AUtilize BFD and tune the multiplier to 50
   • BLower the BGP hello interval
   • CDecrease the BGP keepalive timer
   • DUtilize BFD and keep the default BGP timers

   Show answer

   Answer: D

   Explanation

   I think the answer should be D - the issue is to speed up BGP convergence time in the event a FAILURE occurs and keep the CPU utilisation low - then BFD is the solution

   Source: Adapted from community discussion — luisjuradoledesma

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9. Question 239 · 359 in bank

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

   • AMSTP
   • BRSTP
   • CRapid PVST
   • DSTP

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   Answer: A

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10. Question 240 · 359 in bank

    Select 2

    A network engineer must segregate three interconnected campus networks using IS-IS routing. A two-layer hierarchy must be used to support large routing domains and to avoid more specific routes from each campus network being advertised to other campus network routers automatically. Which two actions does the engineer take to accomplish this segregation? (Choose two.)

    • ADesignate two IS-IS routers as BDR routers at the edge of each campus, and configure one BDR for all Level 1 routers and one BDR for all Level 2 routers.
    • BDesignate two IS-IS routers from each campus to act as Level 1/Level 2 backbone routers at the edge of each campus network.
    • CAssign the same IS-IS NET value for each campus, and configure internal campus routers with Level 1/Level 2 routing.
    • DUtilize different MTU values for each campus network segment. Level 2 backbone routers must utilize a larger MTU size of 9216.
    • EAssign a unique IS-IS NET value for each campus, and configure internal campus routers with Level 1 routing.

    Show answer

    Answer: BE

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300-420 practice, question 231. 359 questions available.