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  2. Cisco Certification
  3. 400-007 Exam
  4. Cisco.400-007.v2025-12-06.q401 Dumps
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Question 376

A business wants to centralize services via VDI technology and to replace remote WAN desktop PCs with thin client-type machines to reduce operating costs. Which consideration supports the new business requirement?

Correct Answer: D
VDI (Virtual Desktop Infrastructure) solutions are latency-sensitive and require:
* Low-latency WAN connectivity
* Sufficient and predictable bandwidth
* Real-time response to user input and video rendering
The primary success factor for VDI is the performance and responsiveness of the remote session, which relies heavily on network characteristics. WAN resizing may also be needed to meet increased load from centralized sessions.
QoS prioritization (Option B) helps but is not sufficient if latency is too high. Placing VDI servers in branch VLANs or DMZs conflicts with the stated goal of centralization.
This aligns with CCDE principles on performance-driven design and service centralization strategies.
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Question 377

Refer to the exhibit.

The network 10.10.0 .0/16 has been redistributed to OSPF processes and the best path to the destination from R1 has been chosen as R1-R2-R3 A failure occurred on the link between R2 and R3 and the path was changed to R1-R4-R5-R3 What happens when the link between R2 and R3 is restored'?

Correct Answer: D
When the link between R2 and R3 is restored, the path reverts back to R1-R2-R3 because this was the previous best path. This is because OSPF uses the Dijkstra algorithm to calculate the shortest path tree (SPT) and the path with the lowest cost is chosen as the best path. In this case, the cost of the path R1-R2-R3 is lower than the cost of the path R1-R4-R5-R3, so the path R1-R2-R3 is chosen as the best path. OSPF also has a preference order for different types of routes, such as intra-area, inter-area, external type 1, external type 2, NSSA type 1, and NSSA type 2. However, this preference order only applies when OSPF has to choose between routes of different types to the same destination. In this scenario, both paths are external type 2 routes, so the preference order does not affect the path selection
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Question 378

A legacy enterprise is using a Service Provider MPLS network to connect its head office and branches. They want to extend the existing IP CCTV network to a new branch without routing changes or IP address changes.
What is the best approach?

Correct Answer: D
* D (EoMPLS - Ethernet over MPLS):EoMPLS allows Layer 2 extension across MPLS without IP addressing or routing changes, preserving VLANs and broadcast domains - ideal for extending CCTV networks transparently.
Other options explained:
* A: GRE encapsulates Layer 3, requiring IP configurations.
* B: L2TPv3 is possible but not common over MPLS SP networks.
* C: VXLAN is more suited for data center overlays, not WAN/MPLS integration.
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Question 379

Which mechanism enables small, unmanaged switches to plug into ports of access switches without risking switch loops?

Correct Answer: B
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Question 380

Refer to the exhibit.

Two data center siles X and Y are connected with a direct backdoor link with these conditions *Site-specific firewalls are deployed behind the Internet edge routers R1 and R2 *Both sites are advertising the address pool
100 75 10 0/23 toward the internet Site-X finds that Internet traffic returning from user PCs comes back on the Site-Y link Which design resolves the issue?

Correct Answer: D
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