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  1. Home
  2. Cisco Certification
  3. 400-007 Exam
  4. Cisco.400-007.v2025-12-06.q401 Dumps
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Question 31

Refer to the exhibit.

As part of a redesign project, you must predict multicast behavior What happens to the multicast traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?

Correct Answer: A
https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450-mcastguide0.html When a multicast packet arrives on an interface, the RPF process checks to ensure that this incoming interface is the outgoing interface used by unicast routing in order to reach the source of the multicast packet. This RPF check process prevents loops. Multicast routing does not forward a packet unless the source of the packet passes a RPF check. Once a packet passes this RPF check, multicast routing forwards the packet based only upon the destination address.
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Question 32

An enterprise organization currently provides WAN connectivity to their branch sites using MPLS technology, and the enterprise network team is considering rolling out SD-WAN services for all sites.
With regards to the deployment planning, drag and drop the actions from the left onto the corresponding steps on the right.

Correct Answer:
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Question 33

Which two actions ensure voice quality in a branch location with a low-speed, high-latency WAN connection?
(Choose two.)

Correct Answer: A,B
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Question 34

Which two descriptions of CWDM are true? (Choose two)

Correct Answer: D,E
* D: CWDM (Coarse Wavelength Division Multiplexing) shares parts of the same optical transmission window (1260-1625 nm) as DWDM but uses wider spacing between channels (typically 20 nm apart).
* E: CWDM typically uses passive devices (multiplexers and demultiplexers) that require no electrical power, making deployment cost-effective.
Incorrect Options:
* A: CWDM is better suited for shorter distances (up to ~80 km) and doesn't typically use optical amplifiers (EDFA). DWDM is better for long-haul with amplification.
* B: 850 nm is used in multimode fiber systems (not CWDM).
* C: CWDM supports up to 18 channels; DWDM supports up to 32 or more.
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Question 35

The Agile release train workflow focuses on tasks which can be accomplished reliably and efficiently Scrum and Kanban are two of the most popular Agile frameworks, but both have a specific use case based on the implementation requirements In which two situations are Kanban the ideal framework to use"? (Choose two.)

Correct Answer: A,B
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