400-007 practice questions 71–80

1. Question 71 · 263 in bank

   

   Refer to the exhibit. Traffic was equally balanced between Layer 3 links on core switches SW1 and SW2 before an introduction of the new video server in the network. This video server uses multicast to send video streams to hosts and now one of the links between core switches is over utilized. Which design solution solves this issue?

   • AAggregate links using Layer 2 link aggregation.
   • BAdd more links between core switches.
   • CApply a more granular load-balancing method on SW2.
   • DFilter IGMP joins on an over-utilized link.
   • EApply a more granular load-balancing method on SW1.

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   Answer: E

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2. Question 72 · 263 in bank

   

   Refer to the exhibit. This enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer 3 VPN solution and manages the CE routers, but they do not currently support multicast. Which solution quickly allows this multicast traffic to go through while allowing for future scalability?

   • AEnable a GRE tunnel between nodes C1 and C4.
   • BEnable a GRE tunnel between nodes C2 and C4.
   • CEnable a GRE tunnel between nodes CE1 and CE2.
   • DImplement hub and spoke MPLS VPN over DMVPN (also known as 2547oDMVPN) between CE1 and CE2.
   • EThe service provider must provide a Draft Rosen solution to enable a GRE tunnel between nodes PE1 and PE2.

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   Answer: B

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3. Question 73 · 263 in bank

   Which architecture does not require an explicit multicast signaling protocol, such as PIM or P2MP, to signal the multicast state hop-by-hop, but instead uses a link state protocol to advertise the multicast forwarding state?

   • ABi-Directional Implicit Replication
   • BBit Indexed Explicit Replication
   • CBinary Intermediate Enhanced Routing
   • DBinary Indexed Explicit Routing

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   Answer: B

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4. Question 74 · 263 in bank

   Select 2

   Which two advantages of using DWDM over traditional optical networks are true? (Choose two.)

   • Ainherent topology flexibility with a service protection provided through a direct integration with an upper layer protocol
   • Binherent topology flexibility with built-in service protection
   • Cability to expand bandwidth over existing optical infrastructure
   • Dinherent topology flexibility with intelligent chromatic dispersion
   • Einherent topology flexibility and service protection provided without penalty through intelligent oversubscription of bandwidth reservation

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   Answer: BC

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5. Question 75 · 263 in bank

   Select 2

   Company XYZ asks for design recommendations for Layer 2 redundancy. The company wants to prioritize fast convergence and resiliency elements in the design. Which two technologies are recommended? (Choose two.)

   • AUse BPDU guard.
   • BUse UniDirectional Link Detection.
   • CUse root guard.
   • DConfigure DHCP snooping on the switches.
   • EDesign MLAG/MC-LAG into the network wherever possible.

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   Answer: BE

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6. Question 76 · 263 in bank

   Company XYZ has a hub-and-spoke topology over an SP-managed infrastructure. To measure traffic performance metrics, they implemented IP SLA senders on all spoke CE routers and an IP SLA responder on the hub CE router. What must they monitor to have visibility on the potential performance impact due to the constantly increasing number of spoke sites?

   • ACPU and memory usage on the spoke routers
   • Bmemory usage on the hub router
   • CCPU usage on the hub router
   • Dinterface buffers on the hub and spoke routers

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   Answer: C

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7. Question 77 · 263 in bank

   Select 2

   Which two application requirements are mandatory for traffic to receive proper treatment when placed in the priority queue? (Choose two.)

   • Asmall transactions (HTTP-like behavior)
   • Bintolerance to jitter
   • Ctolerance to packet loss
   • DWRED drop treatment
   • ETCP-based application

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   Answer: AB

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8. Question 78 · 263 in bank

   Company XYZ is redesigning their QoS policy. Some of the applications used by the company are real-time applications. The QoS design must give these applications preference in terms of transmission. Which QoS strategy can be used to fulfill the requirement?

   • Aweighted random early detection
   • Bweighted fair queuing
   • Cfirst-in first-out
   • Dlow-latency queuing

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   Answer: D

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9. Question 79 · 263 in bank

   According to the CIA triad principles for network security design, which principle should be priority for a Zero Trust network?

   • Arequirement for data-in-motion encryption and 2FA authentication
   • Bcategorization of systems, data, and enterprise BYOD assets that are connected to network zones based on individual privacy needs
   • Censuring that authorized users have high-availability system access from defined zones to defined systems or zones
   • Drequirement for data-at-rest encryption for user identification within the VPN termination hardware

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   Answer: A

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10. Question 80 · 263 in bank

    Select 2

    Which two points must network designers consider when designing a new network design or when evaluating an existing network design to help them understand the high-level design direction with regards to the security aspects? (Choose two.)

    • AConsider for only complex networks
    • BConsider organization's security policy standards
    • CConsider for only new network technologies and components
    • DConsider for only multi-site networks
    • EConsider Business objectives and goals

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    Answer: BE

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400-007 practice, question 71. 263 questions available.