400-007 practice questions 51–60

1. Question 51 · 263 in bank

   Which BGP feature provides fast convergence?

   • ABGP-LS
   • BBGP FlowSpec
   • CBGP-EVPN
   • DBGP PIC

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   Answer: D

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2. Question 52 · 263 in bank

   

   Refer to the exhibit. This network is running OSPF and EIGRP as the routing protocols. Mutual redistribution of the routing protocols has been configured on the appropriate ASBRs. The OSPF network must be designed so that flapping routes in EIGRP domains do not affect the SPF runs within OSPF. The design solution must not affect the way EIGRP routes are propagated into the EIGRP domains. Which technique accomplishes the requirement?

   • Aroute summarization on the ASBR interfaces facing the OSPF domain
   • Broute summarization on the appropriate ABRs
   • Croute summarization on EIGRP routers connecting toward the ASBR
   • Droute summarization on the appropriate ASBRs

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   Answer: C

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3. Question 53 · 263 in bank

   Select 2

   Which two mechanisms avoid suboptimal routing in a network with dynamic mutual redistribution between multiple OSPFv2 and EIGRP boundaries? (Choose two.)

   • AAD manipulation
   • Bmatching OSPF external routes
   • Croute filtering
   • Dmatching EIGRP process ID
   • Eroute tagging

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   Answer: CE

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4. Question 54 · 263 in bank

   Company XYZ has a new network based on IPv6. Some of the subnets that they are planning to use will be confidential and need an addressing scheme that confines them to the local campus network. Which type of IPv6 addresses can be used for these networks in the IPv6 addressing design?

   • Alink-local addresses
   • Bprivate addresses
   • Cunique local addresses
   • Dlocal addresses

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   Answer: C

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5. Question 55 · 263 in bank

   

   Refer to the exhibit. An engineer is designing a multiarea OSPF network for a client who also has a large EIGRP domain. EIGRP routes are getting redistributed into OSPF. OSPF area 20 has routers with limited memory and CPU resources. The engineer wants to block routes from EIGRP 111 from propagating into area 20 and allow EIGRP 222 routes to flow in. Which OSPF area type fulfills this design requirement?

   • Atype 3 LSA filtering on the ABR between area 0 and area 20
   • Btype 5 LSA filtering on the ASBR between EIGRP 111 and area 0
   • Carea 20 as a stub area
   • Darea 20 as a NSSA area

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   Answer: D

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6. Question 56 · 263 in bank

   

   Refer to the exhibit. As part of a redesign project, you must predict multicast behavior. What happens to the multicast traffic received on the shared tree (*, G), if it is received on the LHR interface indicated?

   • AIt is switched due to a successful RPF check against the routing table.
   • BIt is switched given that no RPF check is performed.
   • CIt is dropped due to an unsuccessful RPF check against the multicast receiver.
   • DIt is dropped due to an unsuccessful RPF check against the multicast source.

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   Answer: A

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7. Question 57 · 263 in bank

   

   Refer to the exhibit. This network is running legacy STP 802.1d. Assuming "hello_timer" is fixed to 2 seconds, which parameters can be modified to speed up convergence times after single link/node failure?

   • AOnly the maximum_transmission_halt_delay and diameter parameters are configurable parameters in 802.1d to speed up STP convergence process.
   • BThe max_age and forward delay parameters can be adjusted to speed up STP convergence process.
   • CThe transit_delay=5 and bpdu_delay=20 are recommended values, considering hello_timer=2 and specified diameter.
   • DOnly the transit_delay and bpdu_delay timers are configurable parameters in 802.1d to speed up STP convergence process.

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   Answer: B

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8. Question 58 · 263 in bank

   Company XYZ is running a redundant private WAN network using OSPF as the underlay protocol. The current design accommodates for redundancy in the network, but it is taking over 30 seconds for the network to reconverge upon failure. Which technique can be implemented in the design to detect such a failure in a subsecond?

   • Afate sharing
   • BOSPF LFA
   • Cflex links
   • DSTP
   • EBFD

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   Answer: E

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9. Question 59 · 263 in bank

   Select 3

   Which three elements help network designers to construct secure systems that protect information and resources (such as devices, communication, and data) from unauthorized access, modification, inspection, or destruction? (Choose three.)

   • Ascalability
   • Bavailability
   • Cserviceability
   • Dintegrity
   • Econfidentiality
   • Freliability

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   Answer: BDE

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10. Question 60 · 263 in bank

    Which relationship between iBGP and the underlying physical topology is true?

    • AiBGP full mesh requires an underlying fully meshed network topology.
    • BiBGP full mesh requirement does not dictate any specific network topology.
    • CiBGP does not work on a ring network topology even with an underlying IGP.
    • DiBGP can work only on a ring network topology with a link-state protocol like OSPF or IS-IS.

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    Answer: B

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400-007 practice, question 51. 263 questions available.