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Cisco 400-007 Exam With Confidence Using Practice Dumps

Exam Code:
400-007
Exam Name:
Cisco Certified Design Expert (CCDE v3.1)
Certification:
Vendor:
Questions:
381
Last Updated:
Mar 10, 2025
Exam Status:
Stable
Cisco 400-007

400-007: CCDE v3.0 Exam 2025 Study Guide Pdf and Test Engine

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Cisco Certified Design Expert (CCDE v3.1) Questions and Answers

Question 1

How many fully established neighbour relationships exist on an Ethernet with five routers running OSPF as network type broadcast?

Options:

A.

5

B.

6

C.

7

D.

10

E.

20

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Question 2

You are a network designer and you must ensure that the network you design is secure. How do you plan to prevent infected devices on your network from sourcing random DDoS attacks using forged source address?

Options:

A.

ACL based forwarding

B.

unicast RPF loose mode

C.

unicast RPF strict mode

D.

ACL filtering by destination

Question 3

In a redundant hub and spoke "wheel" design, all spokes are connected to the hub, and spokes are connected to other spokes as well. During failure on one spoke link, the traffic from that site can be sent to a neighboring site for it to be forwarded to the hub site. But during peak hours, a link is overloaded and traffic is re-routed to a neighbor, which subsequently becomes overloaded. This overload results in network traffic oscillation as the load varies at each spoke site. This design provides more redundancy but not more resiliency because the routing protocol must process many alternate paths to determine the lowest cost path. Which two design

changes help to improve resilience in this case? (Choose two.)

Options:

A.

Increase the number of redundant paths considered during the routing convergence calculation.

B.

Eliminate links between every spoke.

C.

Increase routing protocol convergence timers.

D.

Increase unequal-cost parallel paths.

E.

Use two links to each remote site instead of one.