Cisco 400-007 Exam Dumps

Cisco Certified Design Expert (CCDE v3.1)

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Exam Code	400-007
Exam Name	Cisco Certified Design Expert (CCDE v3.1)
Questions	349 Questions Answers With Explanation
Update Date	February 13,2026
Price	Was : $90 Today : $50 Was : $108 Today : $60 Was : $126 Today : $70

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Demo Questions

Question # 1

Which component of the SDN architecture automatically ensures that application traffic is routed according to policies established by network administrators? 

A. packet forwarding engine
B. northbound API
C. southbound API
D. SDN controller

Show Answer

Question # 2

Which three items do you recommend for control plane hardening of an infrastructure device? (Choose three.)

A. routing protocol authentication
B. SNMPv3 
C. Control Plane Policing
D. redundant AAA servers
E. warning banners
F. to enable unused services

Show Answer

Question # 3

The Company XYZ network requires OSPF dead neighbor detection in a subsecond manner However the company network does not support BFD Which other feature can be used to fulfill the design requirement? 

A. STP
 B. fast hello
C. LFA
D. DPD

Show Answer

Question # 4

The SD-WAN architecture is composed of separate orchestration management, control, and data planes Which activity happens at the orchestration plane?

A. automatic onboarding of the SD-WAN routers into the SD-WAN overlay
B. decision-making process on where traffic flows
C. packet forwarding
D. central configuration and monitoring 

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Question # 5

A consultant needs to evaluate project management methodologies for a new service deployment on the existing network of a customer. The customer wants to be involved in the end-to-end project progress and be provided with frequent updates. The customer also wants the ability to change the requirements if needed, as the project progresses. Which project management methodology should be used?

A. three principles
B. phased
C. Agile
D. Waterfall

Show Answer

Question # 6

Company XYZ, a global content provider, owns data centers on different continents. Their data center design involves a standard three-layer design with a Layer 3-only core. HSRP is used as the FHRP. They require VLAN extension across access switches in all data centers, and they plan to purchase a Layer 2 interconnection between two of their data centers in Europe. In the absence of other business or technical constraints, which termination point is optimal for the Layer 2 interconnection?

A. at the core layer, to otter the possibility to isolate STP domains 
B. at me aggregation layer because it is the Layer 2 to Layer 3 demarcation point 
 C. at the access layer because the STP root bridge does not need to align with the HSRP active node. 
D. at the core layer because all external connections must terminate there for security reasons 

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Question # 7

What is the most important operational driver when building a resilient and secure modular network design?

A. Reduce the frequency of failures requiring human intervention 
B. Minimize app downtime
C. Increase time spent on developing new features
D. Dependencies on hardware or software that is difficult to scale

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Question # 8

Which design consideration is valid when you contrast fabricPath and trill? 

A. FabricPath uses IS-IS, but TRILL uses VxLAN
B. FabricPath permits active-active FHRP and TRILL support anycast gateway.
C. FabricPath Permits ECMP, but TRILL does not
D. FabricPath permits active-active mode, but TRILL supports only active-standby mode.

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Question # 9

Enterprise XYZ wants to implement fast convergence on their network and optimize timers for OSPF However they also want to prevent excess flooding of LSAs if there is a constantly flapping link on the network Which timers can help prevent excess flooding of LSAs for OSPF?

A. OSPF propagation timers 
 B. OSPF throttling timers 
 C. OSPF delay timers 
D. OSPF flooding timers

Show Answer

Question # 10

A network engineering team is in the process of designing a lab network for a customer demonstration. The design engineer wants to show that the resiliency of the MPLS traffic Engineering Fast Reroute solution has the same failover/failback times as a traditional SONET/SDH network (around 50MSEC). In order to address both link failure and node failure within the lab typology network, which type of the MPLS TE tunnels must be considered for this demonstration?

A. TE backup tunnel
B. Next-hop (NHop) tunnel
C. FRR Backup tunnel
D. next-next-hop (NNHop) tunnel

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Question # 11

Which two benefits can software-defined networks provide to businesses? (Choose two.) 

A. provides additional redundancy
 B. reduction of OpEx/CapEx 
 C. reduced latency 
 D. decentralized management
 E. enables innovation F. meets high traffic demands 

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Question # 12

What advantage of placing the IS-IS layer 2 flooding domain boundary at the core Layer in a threelayer hierarchical network is true? 

A. The Layer 1 and Layer 2 domains can easily overlap
B. It reduces the complexity of the Layer 1 domains
C. It can be applied to any kind of topology
D. The Layer 2 domain is contained and more stable

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Question # 13

Which three items do you recommend for control plane hardening of an infrastructure device? (Choose three.)

A. routing protocol authentication 
B. SNMPv3 
 C. Control Plane Policing 
 D. redundant AAA servers
 E. warning banners
 F. to enable unused services

Show Answer

Question # 14

The Company XYZ network requires OSPF dead neighbor detection in a subsecond manner However the company network does not support BFD Which other feature can be used to fulfill the design requirement? 

A. STP 
 B. fast hello 
 C. LFA 
D. DPD

Show Answer

Question # 15

Which DCI technology utilizes a œflood and learn technique to populate the Layer2 forwarding table? 

A. LISP
B. OTV
C. VPLS
D. EVPN

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Question # 16

Which two statements describe the functionality of OSPF packet-pacing timers? (Choose two ) The group-pacing timer controls the interval that is used for group and individual LSA refreshment

A. OSPF flood-pacing timers allow dynamic control of the OSPF transmission queue size
 B. OSPF retransmission-pacing timers allow control of interpacket spaang between consecutive linkstate update packets in the OSPF retransmission queue. 
 C. OSPF retransmission-pacing timers allow control of packet interleaving between nonconsecutive link-state update packets in the OSPF retransmission queue. 
 D. OSPF flood-pacing timers allow control of interpacket spacing between consecutive link-state update packets in the OSPF transmission queue 

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Question # 17

Which design benefit of bridge assurance is true?

A. It supposes a spanning-tee topology change upon connecting and disconnecting a station on a port
B. It prevents switched traffic from traversing suboptimal paths on the network.
C. It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops.
D. It prevents switch loops caused by unidirectional point-to-point link condition on Rapid PVST + and MST 

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Question # 18

An existing wireless network was designed to support data traffic only. You must now install context Aware services for location tracking changes must be applied to the existing wireless network to increase the location accuracy? (Chose two) 

A. Add access points along the perimeter of the coverage area.
B. Increase the access point density to create an average inter-access point distance of less than 40 feet or 12.2 meters
C. Use directional antennas to provide more cell overlapping
D. Install additional access points in monitor mode where the co-channel interference would otherwise be affected
E. Fine tune the radio configuration of the access point to have a higher average transmission power to achieve better coverage 

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Question # 19

A consultant needs to evaluate project management methodologies for a new service deployment on the existing network of a customer. The customer wants to be involved in the end-to-end project progress and be provided with frequent updates. The customer also wants the ability to change the requirements if needed, as the project progresses. Which project management methodology should be used?

A. three principles 
B. phased 
 C. Agile 
 D. Waterfall

Show Answer

Question # 20

An enterprise campus is adopting a network virtualization design solution with these requirements It must include the ability to virtualize the data plane and control plane by using VLANs and VRFs It must maintain end-to-end logical path transport separation across the network resources available grouped at the access edge Which two primary models can this network virtualization design be categorized? (Choose two)

A. Path isolation
B. Session isolation
C. Group virtualization
D. Services virtualization
E. Edge isolation 

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Question # 21

A business wants to centralize services via VDI technology and to replace remote WAN desktop PCs with thin client-type machines to reduce operating costs Which consideration supports the new business requirement?

A. VDI servers should be contained centrally within a DMZ 
 B. The thin client traffic should be placed in a WAN QoS priority queue
C. VDI servers should be contained within dedicated VLANs in each branch location 
 D. The WAN should offer low latency and be resized

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Question # 22

Which issue poses a challenge for security architects who want end-to-end visibility of their networks?

A. too many overlapping controls 
 B. too many disparate solutions and technology silos 
 C. an overabundance of manual processes 
D. a network security skills shortage

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Question # 23

Which actions are performed at the distribution layer of the three-layer hierarchical network design model? (Choose two)

A. Fast transport
B. Reliability
C. QoS classification and marking boundary
D. Fault isolation
E. Redundancy and load balancing

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Question # 24

The major business applications of an enterprise are largely monolithic and hard-coded As part of a major modernization and overhaul of the applications the goal is to move to a modular and containerized application architecture mode At the same time decoupling from the hardware is desired to move to an on-demand provisioning However the CyberOps team mandated that the final architecture must provide the same security levels as an air-gapped data center. Which cloud architecture meets these requirements?

A. laaS 
B. private cloud 
 C. PaaS 
 D. hybrid cloud 
E. public cloud

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Question # 25

Which component of the SDN architecture automatically ensures that application traffic is routed according to policies established by network administrators?

A. packet forwarding engine 
B. northbound API
 C. southbound API 
D. SDN controller

Show Answer