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Exam Code 400-007
Exam Name Cisco Certified Design Expert (CCDE v3.1) Written
Vendor Cisco
Total Questions 0
Last Updated 26-Oct, 2026
Free 400-007 Questions Get Premium Access
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Free 400-007 Practice Questions

Explore 4 free practice questions for the Cisco 400-007 exam and review the answers and explanations to support your preparation.

  1. Question 1

    Single answer

    Which purpose of a dynamically created tunnel interface on the design of IPv6 multicast services Is true? 

    • Option A:
       first-hop router registration to the RP
      Correct
    • Option B:
      multicast client registration to the RP
      Correct
    • Option C:
      multicast source registration to the RP D. transport of all IPv6 multicast traffic
      Correct
    • Option D:
      transport of all IPv6 multicast traffic
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A

  2. Question 2

    Multiple answers

    A multicast network is sing Bidirectional PIM. Which two combined actions achieve high availability so that two RPs within the same network can act in a redundant manner? (Choose two) 

    • Option A:
      Use two phantom RP addresses
      Correct
    • Option B:
      Manipulate the administration distance of the unicast routes to the two RPs
      Correct
    • Option C:
      Manipulate the multicast routing table by creating static mroutes to the two RPs
      Correct
    • Option D:
      Advertise the two RP addresses in the routing protocol
      Correct
    • Option E:
      Use anycast RP based on MSDP peering between the two RPs
      Correct
    • Option F:
      Control routing to the two RPs through a longest match prefix
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A, F

  3. Question 3

    Single answer

    You want to mitigate failures that are caused by STP loops that occur before UDLD detects the failure or that are caused by a device that is no longer sending BPDUs. Which mechanism do you use along with UDLD?

    • Option A:
      Root guard
      Correct
    • Option B:
      BPDU guard
      Correct
    • Option C:
      Loop guard
      Correct
    • Option D:
      BPDU filtering
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: C

  4. Question 4

    Single answer

    An enterprise network has two core routers that connect to 200 distribution routers and uses full mesh IBGP peering between these routers as its routing method. The distribution routers are experiencing high CPU utilization due to the BGP process. Which design solution is the most cost effective?

    • Option A:
      Implement route reflectors on the two core routers
      Correct
    • Option B:
      Increase the memory on the core routers
      Correct
    • Option C:
      Implement e BGP between the core and distribution routers
      Correct
    • Option D:
      Increase the memory on the distribution routers
      Correct
    • Option E:
      Increase bandwidth between the core routers
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A