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[Hardware] Examcollection 400-007 Free Dumps & 400-007 Latest Exam Preparation

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【Hardware】 Examcollection 400-007 Free Dumps & 400-007 Latest Exam Preparation

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2026 Latest TestkingPass 400-007 PDF Dumps and 400-007 Exam Engine Free Share: https://drive.google.com/open?id=1wqd2cfX22WZFNqiqSKTUXi1eyI9LThNt
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Upon passing the Cisco 400-007 Exam, candidates will earn the Cisco Certified Design Expert (CCDE) certification, which is recognized worldwide as a mark of expertise in network design. Cisco Certified Design Expert (CCDE) Written Exam certification provides networking professionals with new opportunities for career advancement and recognition as top-tier experts in network design.
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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q463-Q468):NEW QUESTION # 463
A senior network designer suggests that you should improve network convergence times by reducing BGP timers between your CE router and the PE router of the service provider.
Which two factors should you consider to adjust the timer values? (Choose two.)
  • A. number of routes on the CE router
  • B. service provider agreement to support tuned timers
  • C. number of VRFs on the PE router
  • D. service provider scheduling of changes to the PE
  • E. manual updates to the peer groups
Answer: A,B

NEW QUESTION # 464
Which technology supports antispoofing and does not have any impact on encryption performance regardless of packet size?
  • A. DHCP snooping with DAI
  • B. IPsec
  • C. MACsec
  • D. IP source guard
Answer: C

NEW QUESTION # 465
Over the years, many solutions have been developed to limit control plane state which reduces the scope or the speed of control plane information propagation. Which solution removes more specific information about a particular destination as topological distance is covered in the network?
  • A. Layering
  • B. Aggregation
  • C. Summarization
  • D. Back-off timers
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract of Design Expert (CCDE) Summarization reduces control plane state by abstracting detailed route information. As packets move further away from the destination subnet, the network advertises summarized prefixes instead of individual host or subnet routes, minimizing control plane overhead and routing table size. This helps scale large networks and improves convergence times.
While aggregation and summarization are related, summarization specifically refers to the propagation of route prefixes and their abstraction - making it the precise fit for this question.

NEW QUESTION # 466
Company ABC uses IPv4-only. Recently they started deploying new endpoint devices. For operational reasons, IPv6 cannot be disabled on these new endpoint devices. Which security measure prevents the new endpoint from learning an IPv6 prefix from an attacker?
  • A. Source Guard and Prefix Guard
  • B. Prefix Guard
  • C. Secure Neighbor Discovery
  • D. Router Advertisement Guard
Answer: D
Explanation:
In IPv6, routers advertise prefixes via Router Advertisement (RA) messages. An attacker could inject rogue RAs to manipulate the IPv6 configuration of endpoints.
* Router Advertisement Guard (RA Guard) blocks unauthorized RA messages from being received on access ports, preventing endpoints from receiving incorrect IPv6 prefixes from malicious or misconfigured devices.
* This security feature is crucial when devices have IPv6 enabled but the network is IPv4-only.
Other options explained:
* A: Source Guard and Prefix Guard enforce valid address and prefix assignment but do not prevent RA spoofing directly.
* C: Prefix Guard focuses on controlling prefixes being assigned, not blocking RA messages.
* D: Secure Neighbor Discovery (SEND) provides cryptographic protection but is rarely deployed due to complexity.

NEW QUESTION # 467
Which methodology is the leading lifecycle approach to network design and implementation?
  • A. PPDIOO
  • B. Waterfall model
  • C. V model
  • D. Spiral model
Answer: A

NEW QUESTION # 468
......
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