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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 366

Drag and drop the characteristics from the left onto the corresponding network management options on the right.

Correct Answer:

Explanation:
Text Description automatically generated
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Question 367

The controller has a global view of the network, and it can easily ensure that the network is in a consistent and optimal configuration. Which two statements describe a centralized SDN control path? (Choose two.)

Correct Answer: A,D
* A (Scaling challenges for services):Centralized SDN controllers may experience scalability challenges for distributed services like DHCP and load balancing since these often require real-time responsiveness and distributed service locality.
* D (Latency in reactive handling):Centralized controllers may introduce additional latency during reactive PACKET_IN event handling as control decisions traverse the control plane before forwarding happens.
Other options explained:
* B: Centralized controllers still present failure domain risks; high-availability must be explicitly designed.
* C: Smart NICs operate primarily at the host level, often independently of centralized SDN controllers.
* E: Legacy equipment often lacks support for many SDN southbound APIs.
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Question 368

Refer to the exhibit.

Refer to the exhibit A customer network design team is planning a migration from a legacy TDM-based L2VPN to an MPLS-based L3VPN Migration is planned in a phased approach:
* OSPF backbone Link between HUB A and HUB B sites to be migrated to eBGP
* Spoke A2 and Spoke B1 will be migrated to the L3VPN
Which solution design can be considered to avoid routing loops during backbone link migration?

Correct Answer: D
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Question 369

Which two features describe controller-based networking solutions compared to traditional networking solutions? (Choose two.)

Correct Answer: B,C
* B (Reduce config complexity):Central controllers abstract policies, simplifying configuration.
* C (Centralized IT functions):Controllers centralize management, automation, analytics, and assurance.
Other options explained:
* A: Licensing varies but not universally inflated.
* D: Failures are dependent on hardware design, not controller presence.
* E: SDN does not inherently increase bandwidth usage.
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Question 370

Company XYZ has implemented policy-based routing in their network. Which potential problem must be kept in mind about network reconvergence and PBR?

Correct Answer: B
* PBR overrides the normal routing table behavior, potentially leading to microloops during reconvergence because forwarding decisions are based on policies rather than updated routing tables.
* During fast topology changes, PBR decisions may not adapt as quickly as dynamic routing protocols, causing brief routing inconsistencies.
Why other options are incorrect:
* A: PBR can add complexity but does not inherently limit scalability.
* C/D: PBR does not directly affect convergence speed but can introduce inconsistency.
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