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  1. Home
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  3. 400-007

Cisco® 400-007 Exam (page: 4)
Cisco® Certified Design Expert CCDE v3.0
Updated on: 25-Dec-2025

Viewing Page 4 of 60
400-007 PDF 397 Questions

Refer to the diagram. Which solution must be used to send traffic from the foreign wireless LAN controller to the anchor wireless LAN controller?

  1. Send packets without encapsulation to the anchor controller over the routed network.
  2. Encapsulate packets into an EoIP tunnel and send them to the anchor controller.
  3. Send packets from the foreign controller to the anchor controller via Layer 3 MPLS VPN or VRF-Lite.
  4. Send packets from the foreign controller to the anchor controller via IPinIP or IPsec tunnel.

Answer(s): B



The Company XYZ network is experiencing attacks against their router. Which type of Control Plane Protection must be used on the router to protect all control plane IP traffic that is destined directly for one of the router interfaces?

  1. Control Plane Protection transit subinterface
  2. Control Plane Protection host subinterface
  3. Control Plane Protection CEF-exception subinterface
  4. Control Plane Protection main interface

Answer(s): B

Explanation:

Control Plane Protection (CoPP) is a feature on Cisco routers that can be used to protect the router's control plane from unauthorized access. CoPP can be configured to protect all control plane IP traffic, including traffic that is destined directly for one of the router interfaces.

The Control Plane Protection host subinterface is a special subinterface that is created on the router's main interface. This subinterface is used to protect all control plane IP traffic that is destined directly for the main interface.

The other options are incorrect.

-Control Plane Protection transit subinterface is used to protect control plane IP traffic that is transiting through the router.
-Control Plane Protection CEF-exception subinterface is used to protect control plane IP traffic that is destined for a CEF-enabled interface.
-Control Plane Protection main interface does not provide any protection for control plane IP traffic.
-



An architect designs a multi-controller network architecture with these requirements:

-Achieve fast failover to control traffic when controllers fail.
-Yield a short distance and high resiliency in the connection between the switches and the controller.
-Reduce connectivity loss and enable smart recovery to improve the SDN survivability.
-Improve connectivity by adding path diversity and capacity awareness for controllers.

Which control plane component of the multi-controller must be built to meet the requirements?

  1. control node reliability
  2. control path reliability
  3. controller state consistency
  4. controller clustering

Answer(s): B

Explanation:

Control path reliability is the ability of the control plane to maintain connectivity between the controllers and the switches. This is important for ensuring that traffic can be controlled even if one or more controllers fail.

The other options are not as relevant to the requirements.

-Control node reliability is the ability of the controllers themselves to remain up and running. This is important, but it is not as important as ensuring that the control path is reliable.
-Controller state consistency is the ability of the controllers to maintain a consistent view of the network state. This is important for ensuring that the controllers can make correct decisions about how to control traffic.
-Controller clustering is a technique for grouping controllers together so that they can share the load of controlling the network. This can improve performance, but it does not directly address the requirements of the problem.
-Therefore, the control path reliability must be built to meet the requirements of the multi-controller network architecture.

Here are some additional details about control path reliability:

-Control path reliability can be achieved through a variety of techniques, such as using multiple controllers, using redundant links between the controllers and the switches, and using load balancing algorithms to distribute traffic across the controllers.
-Control path reliability is important for ensuring that the network can continue to operate even if one or more controllers fail.
-Control path reliability can be improved by using techniques such as link redundancy, load balancing, and controller clustering.
-



Which two control plane policer designs must be considered to achieve high availability? (Choose two.)

  1. Control plane policers are really needed only on externally facing devices.
  2. Control plane policers can cause the network management systems to create false alarms.
  3. Control plane policers require that adequate protocols overhead are factored in to allow protocol convergence.
  4. Control plane policers must be processed before a forwarding decision is made.
  5. Control plane policers are enforced in hardware to protect the software path, but they are hardware platform-dependent in terms of classification ability.

Answer(s): D,E

Explanation:

-Control plane policers must be processed before a forwarding decision is made. This is because control plane traffic is used to make routing and switching decisions. If control plane traffic is not policed, it could overwhelm the router or switch and prevent it from making correct routing and switching decisions.
-Control plane policers are enforced in hardware to protect the software path, but they are hardware platform-dependent in terms of classification ability. This means that the control plane policers must be implemented in hardware to ensure that they are not affected by software bugs or performance issues. However, the specific way in which the control plane policers are implemented can vary depending on the hardware platform.

The other options are not as important for achieving high availability.

-Control plane policers are really needed only on externally facing devices. This is not always true. Control plane policers can also be used on internally facing devices to protect the control plane from unauthorized access.
-Control plane policers can cause the network management systems to create false alarms. This is possible, but it is not a major concern. The network management systems can be configured to ignore false alarms from the control plane policers.
-Control plane policers require that adequate protocols overhead are factored in to allow protocol convergence. This is true, but it is not a major concern. The control plane policers can be configured to allow for adequate protocol overhead.
-



A small organization of 20 employees is looking to deliver a network design service for modernizing customer networks to support advanced solutions.

-Project scope and weekly progress should be visualized by the management.
-Always consider feedback and make changes accordingly during the project.
-Should consider flexibility to change scope at the point of time.

Which project methodology meets the requirements and have the least impact on the outcome?

  1. LEAN
  2. Six-Sigma
  3. Scrum
  4. Kanban

Answer(s): C

Explanation:

LEAN and Six-Sigma are methodologies primarily focused on process improvement and efficiency, which may not provide the same level of flexibility and adaptability required in this scenario. Kanban is a project management methodology that emphasizes flow and visualizing work, but it may not provide the same level of structured feedback and adaptability as Scrum.


Reference:

https://firebrand.training/uk/blog/scrum-vs-six-sigma-which-one-is-right-for-you



Viewing Page 4 of 60



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