Cisco Certified Design Expert (CCDE v3.0) Written (400-007) - Cisco

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Sample 400-007 Exam Questions & Explanations

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Question #1 Verified Q&A
Refer to the exhibit.<br />
<br />
<img src="https://examsqa.com/storage/question-images/cisco-certified-design-expert-ccde-v3-0-written-400-007_page_1_Im2.jpg" alt="Exhibit" style="max-width: 100%; height: auto;" /><br />
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The enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer3 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?
A Enable a GRE tunnel between nodes C1 and C4
B Enable a GRE tunnel between nodes CE1 and CE2
C Enable a GRE tunnel between nodes C2 and C4
D Implement hub and spoke MPLS VPN over DMVPN (also known as 2547o DMVPN) between CE1 and CE2
E The service provider must provide a Draft Rosen solution to enable a GRE tunnel between nodes PE1 and PE2
Correct Answer: Enable a GRE tunnel between nodes C2 and C4
Question #2 Verified Q&A
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?
A Implement route reflectors on the two core routers
B Implement e BGP between the core and distribution routers
C Increase the memory on the core routers
D Increase the memory on the distribution routers
E Increase bandwidth between the core routers
Correct Answer: Implement route reflectors on the two core routers
Question #3 Verified Q&A
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?
A Loop guard
B Root guard
C BPDU guard
D BPDU filtering
Correct Answer: Loop guard
Question #4 Verified Q&A
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)
A Manipulate the multicast routing table by creating static mroutes to the two RPs
B Use two phantom RP addresses
C Manipulate the administration distance of the unicast routes to the two RPs
D Advertise the two RP addresses in the routing protocol
E Use anycast RP based on MSDP peering between the two RPs
F Control routing to the two RPs through a longest match prefix
Correct Answer: Use two phantom RP addresses, Control routing to the two RPs through a longest match prefix
Explanation:
https://community.cisco.com/t5/networking-knowledge-base/rp-redundancy-with-pim-bidir- phantom-rp/ta-p/3117191
Question #5 Verified Q&A
Which purpose of a dynamically created tunnel interface on the design of IPv6 multicast services Is true?
A multicast source registration to the RP
B first-hop router registration to the RP
C multicast client registration to the RP
D transport of all IPv6 multicast traffic
Correct Answer: first-hop router registration to the RP

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Our 400-007 (Cisco Certified Design Expert (CCDE v3.0) Written) practice question bank currently includes 397 verified questions with comprehensive explanations.
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Yes, all Cisco 400-007 practice questions are regularly updated and verified against current exam objectives.
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The 400-007 (Cisco Certified Design Expert (CCDE v3.0) Written) question bank is built to mirror the real exam's format and topics, with detailed explanations for every answer so you understand the reasoning — not just memorize responses.
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