300-420 practice questions 311–320

1. Question 311 · 359 in bank

   Select 2

   

   Refer to the exhibit. An architect must design an OSPF solution for an enterprise customer. The design must meet these requirements: • Limit the link flap impact to Area-1 and Area-2. • Any link failure must have minimal impact on voice and video traffic Which two OSPF solutions must the architect include in the design? (Choose two.)

   • AEnable manual route summarization and configure all nonbackbone areas as stub networks
   • BAdvertise default routes from the backbone to nonbackbone areas
   • CReduce the frequency of DR and BDR elections
   • DIncrease hello and hold timers
   • ETune LSA and SPF throttling timers

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   Answer: AE

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2. Question 312 · 359 in bank

   Select 2

   Which two LISP components are required in the Cisco SD-Access fabric control plane node? (Choose two.)

   • AProxy ETR
   • BEngress Tunnel Router
   • CMap-Server
   • DMap-Resolver
   • EIngres Tunnel Router

   Show answer

   Answer: CD

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3. Question 313 · 359 in bank

   Select 2

   An engineer is designing a QoS solution for a campus. The design must guarantee real-time traffic delivery during congestion, minimize the bandwidth consumption for possible virus or worm attacks, and reduce flooding of excessive traffic during times of congestion. Which two solutions must the engineer select? (Choose two.)

   • ACreate a policing policy to drop excessive traffic and a strict queue for real-time traffic
   • BApply queuing on the distribution to core links
   • CCreate a scavenger queue for excessive traffic and a strict queue for real-time traffic
   • DApply queuing on the access to distribution links
   • ECreate a shaping policy to drop excessive traffic and a strict queue for real-time traffic

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   Answer: CD

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4. Question 314 · 359 in bank

   

   Refer to the exhibit. A company has some offices that are connected via dark fiber in New York. A network architect must optimize the network design based on the EIGRP routing protocol. The network has hierarchical addressing between 10 and 12 routers in each office. Routing convergence time must be at the minimum. What must the network architect do to reduce the query range?

   • AImplement network summarization on edge routers.
   • BConfigure route filtering on non-edge routers.
   • CConfigure stub areas on non-edge routers.
   • DUse different EIGRP processes on edge routers.

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   Answer: A

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5. Question 315 · 359 in bank

   An engineer working for a service provider with an employee ID: 4859:86:437 must design a solution to provide remote connectivity over the public internet. The design must: • securely connect multiple remote sites to the central site • provide redundant paths to the central site • allow auto path selection based on failure and connection quality • support IP multicast • minimal configuration at remote sites Which solution must the engineer choose?

   • AMPLS provided service with BGP
   • Bfull mesh ISIS with GRE tunnels and IPsec
   • Cdual DMVPN with EIGRP routing
   • Dfull mesh OSPF with IPsec tunnels

   Show answer

   Answer: C

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6. Question 316 · 359 in bank

   

   Refer to the exhibit. An architect is designing a Layer 2 network for a customer. The network will use the spanning-tree protocol. During a link failure between SW1 and SW2, the fastest possible convergence time is desired. Which solution must the architect select?

   • AUplinkFast
   • BPortFast
   • CBackboneFast
   • DLoop Guard

   Show answer

   Answer: A

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7. Question 317 · 359 in bank

   Currently, inter-VRF routing between the global routing table and VRF-A is accomplished on the client firewall, but the customer wants to do this on the core network layer. The customer does not want to run BGP, VRF-Lite, or static routing. Which mechanism meets the requirements?

   • Ainter-VRF can only be used on an external device with a link in each VRF
   • Bpolicy-based routing with the global set statement in a route map
   • Croute map that matches access lists and prefix lists with the import feature
   • DVRF receive feature under the global routing interfaces

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   Answer: D

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8. Question 318 · 359 in bank

   An architect is designing a network solution for a customer. The network is IPv6-only with 1000 hosts. The design must provide external access to up to 10 concurrent IPv6 hosts to allow communication with legacy IPv4 devices on an adjacent network. The customer set aside 10 IPv4 addresses to allow for one-to-one communication between hosts. Which solution must the architect select?

   • Astatic NAT-PT
   • Bdynamic NPTv6
   • Cstateful NAT64
   • Ddynamic NAT-PT

   Show answer

   Answer: D

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9. Question 319 · 359 in bank

   What is the main purpose of the Cisco SD-Access underlay design?

   • Ato enable automated network provisioning and configuration
   • Bto provide network segmentation and isolation for security
   • Cto support advanced firewall and IPS features
   • Dto optimize network traffic routing and load-balancing

   Show answer

   Answer: A

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10. Question 320 · 359 in bank

    

    Refer to the exhibit. A customer requires a Layer 2 network designed to support: • 500 active logical ports • trunking of 30 VLANs • convergence of less than 1 second Which Spanning Tree Protocol must be selected?

    • APVST+
    • BCST
    • CRPVST+
    • DMSTP

    Show answer

    Answer: C

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300-420 practice, question 311. 359 questions available.