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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 131

Company XYZ must design a strategy to protect their routers from DoS attacks, such as traffic destined to the router's own route processor, using separate control plane categories. Which two capabilities can be used to achieve this requirement? (Choose two.)

Correct Answer: D,E
* D (Queue thresholding on the host subinterface):Protects CPU resources by limiting the amount of control plane traffic destined to the router itself.
* E (Port filtering on the host subinterface):Allows fine-grained filtering of control plane traffic based on specific protocols or ports, protecting sensitive processes like routing protocols or management access.
Other options explained:
* A, B, C: Transit subinterfaces protect forwarding plane transit traffic, not traffic destined to the control plane.
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Question 132

Which design solution reduces the amount of IGMP state in the network?

Correct Answer: B
* B (IGMPv3 with PIM-SSM):Source-Specific Multicast (SSM) significantly reduces multicast state in the network by eliminating shared trees and (*,G) state, requiring only (S,G) entries. With IGMPv3 receivers specify both the group and source, which reduces unnecessary group membership and simplifies multicast forwarding state.
Other options explained:
* A: IGMP filtering controls receiver access but does not reduce core multicast state.
* C: Multiple multicast domains complicate rather than simplify state.
* D: Using one multicast group is not scalable or practical for multiple services.
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Question 133

You are designing a network for a branch office. In order to improve convergence time, you are required to use the BFD feature Which four routing protocols can you use to facilitate this? (Choose four.)

Correct Answer: B,C,D,E
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Question 134

Which two possible drawbacks should you consider when introducing Network Functions Virtualization in a network design? (Choose two)

Correct Answer: B,C
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Question 135

A network security team uses a purpose-built tool to actively monitor the campus network, applications, and user activity. The team also analyzes enterprise telemetry data from IPFIX data records that are received from devices in the campus network. Which action can be taken based on the augmented data?

Correct Answer: A
* A (Faster detection and response):Telemetry like IPFIX enables real-time network visibility and anomaly detection, significantly improving Mean Time to Detect (MTTD) and Mean Time to Respond (MTTR).
Other options explained:
* B: IPFIX feeds data to incident response, but doesn't directly integrate plans.
* C: IPFIX improves detection but primarily reduces response time.
* D: Asset identification typically uses CMDB or inventory tools, not IPFIX alone.
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