400-007 Cisco Certified Design Expert (CCDE v3.1) Free Practice Exam Questions (2026 Updated)
Prepare effectively for your Cisco 400-007 Cisco Certified Design Expert (CCDE v3.1) certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2026, ensuring you have the most current resources to build confidence and succeed on your first attempt.
Which two elements are key in strategic network design and planning?
As part of workspace digitization, a large enterprise has migrated all their users to Desktop as a Service (DaaS), by hosting the backend system in their on-premises data center. Some of the branches have started to experience disconnections to the DaaS at periodic intervals, however, local users in the data center and head office do not experience this behavior. Which technology can be used to mitigate this issue?
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?
SDN emerged as a technology trend that attracted many industries to move from traditional networks to SDN. Which challenge is solved by SDN for cloud service providers?
Which two application requirements are mandatory for traffic to receive proper treatment when placed in the priority queue? (Choose two.)
The controller has a global view of the network, and it can easily ensure that the network is in a consistent and optimal configuration. Which two statements describe a centralized SDN control path? (Choose two.)
Drag and drop the QoS technologies from the left onto the correct capabilities on the right
Refer to the exhibit.
Company XYZ is currently running IPv4 but has decided to start the transition into IPv6. The initial objective is to allow communication based on IPv6 wherever possible, and there should still be support in place for devices that only support IPv4. These devices must be able to communicate to IPv6 devices as well. Which solution must be part of the design?
A large enterprise is planning a new WAN connection to headquarters. The current dual-homed setup with static routing is not providing consistent resiliency. Users complain when one specific link fails, while failure of the other causes no issues. The organization wants to improve resiliency and ROI.
Which solution should be recommended?
Company XYZ is designing the network for IPv6 security and they have these design requirements:
A switch or router must deny access to traffic from sources with addresses that are correct but topologically incorrect.
Devices must block Neighbor Discovery Protocol resolution for destination addresses not found in the binding table.
Which two IPv4 security features are recommended for this company? (Choose two)
Company XYZ is running a redundant private WAN network using OSPF as the underlay protocol. The current design accommodates for redundancy in the network, but it is taking over 30 seconds for the network to reconverge upon failure. Which technique can be implemented in the design to detect such a failure in a subsecond?
A mega store plans to expand its business into the online world, and wants to operate using the highest possible security standards to prove to their customers that they take handling of their payment information seriously. Only TLS v1.3 will be allowed on their websites. Which type of SSL certificate will emphasize their commitment to enforcing high security standards and minimize risk of spoofing?
What is the best approach in a large legacy application migration scenario when the goal is to complete the migration in the shortest possible time?
By monitoring the effects of the design variations, you can characterize the relative resilience of the design. Which method involves disturbing the network by removing an active interface and monitoring how the change is handled by the network?
Company XYZ is migrating their existing network to IPv6. Some access layer switches do not support IPv6, while core and distribution switches fully support unicast and multicast routing. The company wants to minimize cost of the migration. Which migration strategy should be used?
Which design method is achieved by layering the network control plane above a redundant physical infrastructure?
A company with an existing multivendor network is moving from 1 G dark fiber to an ISP virtual leased-line solution The company ' s internal security policy states that any traffic traversing a network that is not owned by the company must be encrypted What must be used to meet the requirements?
An organization is looking to perform a major overhaul on their data center storage infrastructure with a focus on high availability and fault tolerance Which approach will accomplish this?
Drag and drop the correct mitigation methods from the left onto the corresponding types of attack on the right
The Layer 3 control plane is the intelligence over the network that steers traffic toward its intended destination Which two techniques can be used in service provider-style networks to offer a more dynamic, flexible, controlled, and secure control plane design? (Choose two.)
