352-001 practice test

1. Question 1 · 1

   A company plans to include Nonstop Forwarding and Bidirectional Forwarding Detection as a part of their network redundancy plan. In which two ways do NSF and BFD work together when different hardware platforms are compared? (Choose two.)

   Choose all answers that apply.

   • During supervisor engine or routing engine failover, the NSF feature will always ensure that the BFD at the peer router will not trigger a link down independent of the used hardware platform.
   • At some hardware platforms, BFD and NSF are not supported together. During supervisor engine or routing engine failover, the BFD at the peer router will trigger a link down.
   • To ensure that BFD at the peer router will not trigger a link down during NSF, the BFD packets must be processed fast enough, and, during supervisor engine or routing engine failover, by processing the BFD independent from the supervisor engine or routing engine.
   • Because BFD is always processed at the line cards (not at the supervisor engine or routing engine), a supervisor engine or routing engine failover will not affect the BFD peer router.
   • Because BFD is always processed at the supervisor engine or routing engine, a supervisor engine or routing engine failover will always trigger a link down at the peer router.

2. Question 2 · 1

   When designing a WAN that will be carrying real-time traffic, what are two important reasons to consider serialization delay? (Choose two.)

   Choose all answers that apply.

   • Serialization delays are variable because they depend on the line rate of the interface and on the type of the packet being serialized.
   • Serialization delay depends not only on the line rate of the interface but also on the size of the packet.
   • Serialization delays are invariable because they depend only on the line rate of the interface.
   • Serialization delays are variable because they depend only on the size of the packet being serialized.
   • Serialization delay is the time required to transmit the packet on the physical media.

3. Question 3 · 1

   Among the design criteria for a network is the requirement that bandwidth capacity be managed proactively. Which two techniques would most effectively support the proactive management of network bandwidth capacity? (Choose two.)

   Choose all answers that apply.

   • analyze network bandwidth utilization to establish a baseline
   • implement QoS to increase available bandwidth and overall throughput
   • implement utilization measurement and tracking measures in the network
   • configure SNMP MIB collectors to trigger at utilization thresholds

4. Question 4 · 1

   What are the two preferred mechanisms for detecting Layer 2 link failures quickly? (Choose two.)

   Choose all answers that apply.

   • BFD
   • fast RSVP hellos
   • LDP keepalives
   • loss of signal

5. Question 5 · 1

   Which IPv4 addressing and routing scheme can increase the availability of a network service during a DoS attack?

   Choose one answer.

   • unicast
   • broadcast
   • anycast
   • multicast

6. Question 6 · 1

   What are two benefits of protecting the control plane of a network device? (Choose two.)

   Choose all answers that apply.

   • prevents the delivery of packets from spoof sources
   • preserves the confidentiality of traffic encrypted by IPsec
   • maintains routing protocol adjacencies with local neighbors 46
   • maintains remote management access to the router

7. Question 7 · 1

   Refer to the exhibit. On R2 there is a summary route for 192.168.1.0/24 with a next hop of R4. Which change will cause R2 to prefer a path through R1 to reach 192.168.1.0/24?

   Choose one answer.

   

   • convert Area 1 to a stub area and decrease the cost between R1 and R3 to 1
   • create a virtual link between R1 and R2
   • create a virtual link between R1 and R2 and decrease the cost between R1 and R3 to 1
   • change the link between R1 and R2 to Area 0

8. Question 8 · 1

   Which two OSPF design considerations should you implement to support the eventual growth of a network, so that CPU and memory are unaffected by the size and complexity of the link-state database in a large service provider network? (Choose two.)

   Choose all answers that apply.

   • Turn on route dampening.
   • Create network summaries.
   • Turn on the Incremental SPF feature.
   • Add more memory.
   • Turn on packet pacing.
   • Add redundancy between critical locations.

9. Question 9 · 1

   Your company needs to baseline web traffic on a per-session basis for network application reporting. Which two mechanisms, when combined, fulfill the requirement? (Choose two.)

   Choose all answers that apply.

   • Flexible Netflow
   • Remote Monitoring
   • Cisco IOS IP Service Level Agreement
   • Class-Based Quality of Service Management Information Base
   • Network-Based Application Recognition

10. Question 10 · 1

    Your company requires two diverse multihop External Border Gateway Protocol peerings to a partner network. Which two methods would you use to improve lost peer detection? (Choose two.)

    Choose all answers that apply.

    • Use Bidirectional Forwarding Detection for the peers.
    • Use Selective Address Tracking and match the peers.
    • Use subsecond keepalives for the peers.
    • Use subsecond hold timers for the peers.
    • Use Fast Peering Session Deactivation for the peers.
    • Use subsecond minimum route advertisement Interval timers for the peers.

11. Question 11 · 1

    A network design includes a long signaling delay in notifying the Layer 3 control plane that an interface has failed. Which two of these actions would reduce that delay? (Choose two.)

    Choose all answers that apply.

    • Enable lower data link layer recovery systems to have an opportunity to restore the interface.
    • Increase the notification of interface flaps.
    • Reduce the time for the network to reconverge.
    • Increase network stability.

12. Question 12 · 1

    A senior network designer suggests that you should improve network convergence times by reducing BGP timers between your CE router and the PE router of the service provider. Which three factors should you to consider when you adjust the timer values? (Choose three.)

    Choose all answers that apply.

    • access bandwidth
    • service provider agreement to support tuned timers
    • number of routes on the CE router
    • number of VRFs on the PE router
    • service provider scheduling of changes to the PE

13. Question 13 · 1

    FIFO queuing is being used on all routers in a network. The primary application running on the network is data backup using FTP. At certain times, users experience cyclical performance degradation. What two things might mitigate this problem and help ensure bandwidth is used effectively in the network? (Choose two.)

    Choose all answers that apply.

    • traffic shaping
    • CB-WFQ
    • traffic policing
    • WRED
    • MDRR

14. Question 14 · 1

    You have been hired by a startup company to provide optical services using MPLS-TP. Which three options describe reasons to use the MPLS-TP standard in your design? (Choose three.)

    Choose all answers that apply.

    • MPLS-TP is a newer packet transport technology that replaces SONET/SDH.
    • MPLS-TP includes extensions to native MPLS OAM for fault detection, monitoring, and propagation.
    • MPLS-TP requires a routing protocol.
    • MPLS-TP uses an IANA assigned label 13 for OAM.
    • MPLS-TP uses Ethernet Y.1731 OAM.

15. Question 15 · 1

    Refer to the exhibit. In this network, all routers are configured to run EIGRP on all interfaces. All interface bandwidths are set to 1000, and the delays are configured as shown. In the topology table at Router C, you see only one path towards 10.1.1.0/24. What is the reason that Router C only has one path in its topology table?

    Choose one answer.

    

    • Router D is not advertising 10.1.1.0/24 to Router C because Router C is its feasible successor.
    • Router B is not advertising 10.1.1.0/24 to Router C because Router C is its feasible successor.
    • Router D is not advertising 10.1.1.0/24 to Router C due to split horizon.
    • Router B is not advertising 10.1.1.0/24 to Router C due to split horizon.

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