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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 316

Refer to the exhibit.

A customer runs OSPF with Area 5 between its aggregation router and an internal router When a network change occurs in the backbone. Area 5 starts having connectivity issues due to the SPF algorithm recalculating an abnormal number of times in Area 5 You are tasked to redesign this network to increase resiliency on the customer network with the caveat that Router B does not support the stub area How can you accomplish this task*?

Correct Answer: C
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Question 317

What is an architectural framework created by ETSI that defines standards to decouple network functions from proprietary hardware-based appliances and have them run in software on standard x86 servers?

Correct Answer: C
* C (NFV - Network Functions Virtualization):ETSI NFV framework allows virtualizing network functions (firewalls, load balancers, etc.) on standard hardware, promoting flexibility, cost reduction, and hardware independence.
Other options explained:
* A: NPIV relates to Fibre Channel storage, not network virtualization.
* B: NFVIS is Cisco's NFV infrastructure software, not the ETSI standard itself.
* D: VNF refers to individual virtualized functions, not the framework.
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Question 318

SD-WAN can be used to provide secure connectivity to remote offices, branch offices, campus networks, data centers, and the cloud over any type of IP-based underlay transport network. Which two statements describe SD-WAN solutions? (Choose two.)

Correct Answer: C,D
SD-WAN design principles:
* C: Centralized policy, simplified management, and dynamic path selection improve operational efficiency, directly resulting in cost savings.
* D: SD-WAN provides centralized orchestration, automation, and zero-touch provisioning, simplifying deployment and scaling.
Why other options are incorrect:
* A: SD-WAN improves performance with features like dynamic path selection but cannot inherently prevent slow underlay performance.
* B: Many SD-WAN solutions logically separate control and data planes, but not all strictly follow full separation like traditional SDN.
* E: SD-WAN is typically hardware-agnostic but does not depend on specialized switching hardware.
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Question 319

As part of workspace digitization, a large enterprise has migrated all their users to Desktop as a Sen/ice (DaaS), by hosting the backend system in their on-premises data center. Some of the branches have started to experience disconnections to the DaaS at periodic intervals, however, local users in the data center and head office do not experience this behavior. Which technology can be used to mitigate this issue?

Correct Answer: B
Traffic Shaping does help with congestion and better bandwidth utilization over the WAN.
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Question 320

Company XYZ is migrating their existing network to IPv6 and they must plan for Layer 2 and Layer 3 devices Some of the access layer switches do not support IPv6, however, core and distribution switches fully support unicast and multicast routing. The company wants to minimize cost of the migration. Which migration strategy should be used in the design?

Correct Answer: D
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