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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 236

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

Correct Answer: C,E
* C. Fragment data packets: On slow WAN links, large data packets can delay small voice packets (serialization delay). Fragmentation ensures that voice packets are interleaved and not delayed behind large data frames (Link Fragmentation and Interleaving - LFI).
* E. Prioritize voice packets: QoS mechanisms (LLQ, priority queuing) ensure that voice traffic is serviced first, reducing jitter and delay.
These are both critical QoS design principles for real-time application performance in constrained branch WAN scenarios, as outlined in CCDE v3.1.
Why other options are incorrect:
* A: Increasing bandwidth may help but doesn't address serialization or prioritization.
* B: Memory upgrades do not directly improve voice quality.
* D: Fiber upgrades do not address WAN-specific serialization or QoS.
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Question 237

Network operators have many options available, from fully centralized to fully distributed control planes, and each approach has its own set of characteristics. Drag and drop the characteristics from the left onto the corresponding approach on the right.

Correct Answer:

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Question 238

One of the approaches used in cloud bursting scenarios is distributed load-balanced, which operate the workloads in tandem between a public cloud and a data center In which way can the characteristics of distributed load-balancing be described?

Correct Answer: A
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Question 239

The SD-WAN architecture is composed of separate orchestration management, control, and data planes Which activity happens at the orchestration plane?

Correct Answer: D
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Question 240

Company XYZ is running OSPF in their network. They have merged with another company that is running EIGRP as the routing protocol. Company XYZ now needs the two domains to talk to each other with redundancy, while maintaining a loop-free environment. The solution must scale when new networks are added into the network in the near future. Which technology can be used to meet these requirements?

Correct Answer: C
* DUMPS (Designated Unified Multiprotocol Redistribution Strategy) using single-point redistribution with route tagging ensures scalable, loop-free redistribution.
* Route tags prevent redistributed routes from being re-advertised into the originating protocol, avoiding routing loops even with multiple paths.
* Single-point redistribution simplifies operational complexity compared to multipoint redistribution.
Why other options are incorrect:
* A, B, D: ACLs are not scalable for filtering redistributed routes in large networks. Tags provide better control.
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