400-007 Exam Details

  • Exam Code
    :400-007
  • Exam Name
    :Cisco Certified Design Expert (CCDE Written)
  • Certification
    :CCDE
  • Vendor
    :Cisco
  • Total Questions
    :410 Q&As
  • Last Updated
    :Jul 13, 2026

Cisco 400-007 Online Questions & Answers

  • Question 71:

    Refer to the exhibit.

    An engineer is designing the network for a multihomed customer running in AS 111 does not have any other Ass connected to it. Which technology is more comprehensive to use in the design to make sure that the AS is not being used as a transit AS?

    A. Configure the AS-set attribute to allow only routes from AS 111 to be propagated to the neighbor ASs.
    B. Use the local preference attribute to configure your AS as a non-transit'' AS.
    C. include an AS path access list to send routes to the neighboring ASs that only have AS 111 in the AS path field.
    D. Include a prefix list to only receive routes from neighboring ASs.

  • Question 72:

    Company XYZ has two offices connected to each other over unequal redundant paths and they are running OSPF as the routing protocol An external network architect recommends BFD for OSPF Which effect would BFD have in the case of a link failure?

    A. It would drop the dead per detection time to a single hello
    B. It would keep an alternate path ready in case of a link failure
    C. It would optimize the route summarization feature of OSPF
    D. It would detect that the neighbor is down in a subsecond manner

  • Question 73:

    A European government passport agency considers upgrading its IT systems to increase performance and workload flexibility in response to constantly changing requirements. The budget manager wants to reduce capital expenses and IT staff and must adopt the lowest-cost technology. Which technology choice is suitable?

    A. on premises
    B. private cloud
    C. public cloud
    D. hybrid cloud

  • Question 74:

    A software-defined network can be defined as a network with an API that allows applications to understand and react to the state of the network in near real time.

    A vendor is building an SDN solution that exposes an API to the RIB and potentially the forwarding engine directly.

    The solution provides off-box processes with the capability to interact with the routing table in the same way as a distributed routing process.

    Which SDN framework model does the solution use?

    A. replace
    B. augmented
    C. hybrid
    D. distributed

  • Question 75:

    DRAG DROP

    Drag and drop the end-to-end network virtualization elements from the left onto the correct network areas on the right.

    Select and Place:

  • Question 76:

    Which type of interface are OpenFlow and OpFlex?

    A. southbound interface
    B. eastbound interface
    C. cloud-bound interface
    D. northbound interface

  • Question 77:

    Which statement about OSPF hub-and-spoke topology is true?

    A. The DR election is a challenge unless a point-to-point network type is used
    B. The DR and BDR election occurs regardless of the underlying OSPF network type
    C. Traffic does not need to traverse the hub to reach the spokes.
    D. The spoke routers can belong to different areas regardless of the underlying OSPF network type

  • Question 78:

    Which security architecture component offers streamlined security operations, ease of use, and visibility across all network security elements, independent of location or form factor?

    A. threat-centric protection
    B. integrated actionable intelligence
    C. distributed enforcement
    D. central command and control

  • Question 79:

    Which technology supports antispoofing and does not have any impact on encryption performance regardless of packet size?

    A. MACsec
    B. IP source guard
    C. DHCP snooping with DAI
    D. IPsec

  • Question 80:

    When classifying and marking traffic, a recommended design principle is to classify and mark applications as close to their sources as technically and administratively feasible. As the line between enterprises and service providers continues to blur, what ensures interoperability and future expansion?

    A. each application class to its own dedicated queue
    B. QoS policies in hardware rather than software
    C. standards-based DSCP PHB markings
    D. police traffic flows as close to their source as possible

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