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Cisco 400-007 Exam Syllabus Topics:

Section	Objectives
End-to-End Enterprise Architecture Scenarios	- Large-scale enterprise design 1. Scalability and resiliency trade-offs 2. High availability and redundancy - Service integration 1. Hybrid connectivity design 2. Migration and transformation strategies
Multicast and Advanced Services	- Network services 1. Security integration in design 2. QoS design principles - Multicast design 1. Multicast distribution models 2. PIM architecture and scaling
Infrastructure Design (Layer 2 / Layer 3)	- Layer 3 design 1. IP addressing and summarization 2. IGP selection and design - Layer 2 technologies 1. Ethernet scaling and segmentation 2. Spanning Tree design considerations
Routing and Path Control	- Traffic engineering 1. Policy-based routing considerations 2. Path optimization techniques - Routing protocol design 1. OSPF / IS-IS architecture 2. BGP policy and scalability
Network Design Methodology and Principles	- Design lifecycle and methodology 1. Trade-off analysis techniques 2. Design phases and validation approaches - Requirements gathering and analysis 1. Business and technical constraints 2. Stakeholder requirements mapping
MPLS and VPN Architectures	- VPN design 1. Multi-site connectivity strategies 2. L3VPN and L2VPN design models - MPLS fundamentals 1. Label switching architecture 2. MPLS scalability design

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q453-Q458):

NEW QUESTION # 453
A company plans to use BFD between its routers to detect a connectivity problem inside the switched network.
An IPS is transparently installed between the switches. Which packets shold the IPS forward for BFD to work under all circumstances?

A. IP packets with the multicast IP source address
B. Fragmented packet with the do-not-fragment bit set
C. IP packet with the multicast IP destination address
D. IP packets with identical source and destination IP addresses
E. IP packets with broadcast IP source addresses
F. IP packets with the destination IP address 0.0.0.0.

Answer: D

NEW QUESTION # 454
Refer to the exhibit.

Company XYZ is currently running IPv4 but has decided to start the transition into IPv6. The initial objective is to allow communication based on IPv6 wherever possible, and there should still be support in place for devices that only support IPv4. These devices must be able to communicate to IPv6 devices as well. Which solution must be part of the design?

A. 6rd tunneling
B. Address family translation
C. Host-to-host tunneling
D. Dual stack

Answer: B

Explanation:
A (Address family translation):Since the requirement states that IPv4-only devices must be able to communicate with IPv6-only devices, anIPv4-to-IPv6 translation mechanismis necessary. NAT64, DNS64, or protocol translation (address family translation) allows devices on different IP families to communicate without requiring both sides to support both protocols.
Other options explained:
B (Dual stack): Allows both IPv4 and IPv6 to coexist on devices, but it does not solve the problem for IPv4- only or IPv6-only endpoints needing to interoperate.
C (Host-to-host tunneling): Requires both endpoints to support tunneling, which is not feasible for legacy devices.
D (6rd tunneling): Primarily enables rapid IPv6 deployment over IPv4 infrastructure, but does not enable interoperability between IPv4-only and IPv6-only devices.

NEW QUESTION # 455
Data governance allows setting and enforcing controls that allow greater access to data, which gains the security and privacy from having the controls on data. What is one of the use cases of data governance?

A. quality assessment
B. data stewardship
C. risk monitoring
D. policy management

Answer: D

Explanation:
A key use case of data governance is policy management, where organizations define and enforce rules about data access, usage, and handling. This ensures compliance, security, and privacy while enabling greater controlled access to data.

NEW QUESTION # 456
A BGP route reflector in the network is taking longer than expected to coverage during large network changes. Troubleshooting shows that the router cannot handle all the TCP acknowledgements during route updates. Which action can be performed to tune the device performance?

A. Increase the keepalive timers for each BGP neighbor.
B. Increase the size of the hold queue.
C. Decrease the size of the small buffers.
D. Increase the size of the large buffers.

Answer: B

NEW QUESTION # 457
The concept of hybrid cloud computing reflects today ' s notion that IT resources and services are not singular Which two components are needed to establish a hybrid cloud? (Choose two.)

A. unified resources for private cloud environment
B. at least one public infrastructure as a service platform
C. separate physical infrastructure
D. private computing resources
E. separate software platform for public and private cloud

Answer: B,D

NEW QUESTION # 458
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