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To prepare for the CCDE certification exam, candidates must have a thorough understanding of network design principles, including network topology, protocols, and technologies. They must also be familiar with network design methodologies, including the Cisco Lifecycle Services approach. Additionally, candidates must be able to demonstrate their ability to design complex networks that meet specific business requirements and are scalable, secure, and reliable.

Cisco 400-007 exam, also known as the Cisco Certified Design Expert (CCDE v3.0) Written exam, is a certification exam designed for network engineers, architects, and designers who are looking to demonstrate their expertise in designing complex network infrastructure. 400-007 Exam evaluates a candidate's knowledge and skills in designing large-scale, multi-layered, converged network solutions. Passing 400-007 exam is a prerequisite for becoming a Cisco Certified Design Expert (CCDE).

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Cisco 400-007 exam covers a wide range of topics that are related to network design. These include network design concepts and principles, network topology design, network security design, network virtualization design, and network automation design. 400-007 Exam also covers emerging technologies such as cloud computing, software-defined networking (SDN), and network function virtualization (NFV).

Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q513-Q518):

NEW QUESTION # 513
Two routers R1 and R2 are directly connected through an Ethernet link Both routers are running OSPF. OSPF has been registered with BFD and BFD is running in asynchronous mode with the echo function enabled Which two actions occur that are related to the echo function? (Choose two)

A. BFD echo packets are sent from forwarding engines along the Layer 2 path to perform detection
B. DUMPS BFD sessions at either end actively participate in the forwarding of echo packets
C. BFD control packets are sent at a slower pace because the echo function is enabled
D. Only BFD control packets are sent from forwarding engines along the Layer 2 path to perform detection
E. BFD control packets are sent at a higher pace because the echo function is enabled

Answer: A,C

NEW QUESTION # 514
Sometimes SDN leverages various overlay networking technologies to create layer(s) of network abstraction.
What describes an overlay network?

A. It transmits packets that traverse over network devices like switches and routers
B. It is responsible for the delivery of packets; NAT- or VRF-based segregation is required
C. Packet delivery and reliability occurs at Layer 3 and Layer 4
D. It encapsulates packets at source and destination, which incurs additional overhead

Answer: D

Explanation:
* B (Encapsulation at source and destination):Overlay networks encapsulate payloads inside another protocol (e.g. VXLAN, GRE, MPLS), adding headers that enable separation from the underlay network while introducing minor overhead due to encapsulation.
Other options explained:
* A: Describes underlay behavior.
* C: Overlay encapsulation occurs independently of L3/L4 reliability.
* D: NAT or VRF are isolation mechanisms but not how overlays function.

NEW QUESTION # 515
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?

A. complex and distributed management flow
B. higher operating expense and capital expenditure
C. need for intelligent traffic monitoring
D. exponential growth of resource-intensive application

Answer: D

NEW QUESTION # 516
Drag and drop the design use cases from the left onto the correct uRPF techniques used to prevent spoofing attacks Not all options are used.

Answer:

Explanation:

NEW QUESTION # 517
Which two features describe controller-based networking solutions compared to traditional networking solutions? (Choose two.)

A. provide centralization of primary IT functions
B. reduce network configuration complexity
C. allow for fewer network failures
D. inflate licensing costs
E. increase network bandwidth usage

Answer: A,B

NEW QUESTION # 518
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