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Cisco 400-007 Exam Syllabus Topics:

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

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q82-Q87):

NEW QUESTION # 82
Which development model is closely associated with traditional project management?

A. Static model
B. Agile model
C. Evolutionary delivery model
D. Lifecycle model

Answer: D

Explanation:
* D (Lifecycle model):The lifecycle model aligns directly with traditional project management (such as Waterfall). It follows a sequential, phase-driven process: requirement gathering, design, implementation, testing, and maintenance. Each phase must be completed before moving to the next, with defined milestones and documentation.
Other options explained:
* A: "Static model" is not a standard recognized development model.
* B: Agile is iterative and adaptive, opposite of traditional models.
* C: Evolutionary delivery is more incremental, not fully aligned with traditional models.

NEW QUESTION # 83
A network consists of multiple planes where each plane represents a different area of network operations and cames different types of network traffic Which two statements describe the concepts of assurance in the context of control planes ' ? (Choose two.)

A. It is the ability to ensure system compliance and reliability under specified conditions.
B. It executes predefined policies and forwards network traffic
C. It is responsible for collecting analyzing, and enforcing policies based on observed data
D. It focuses on gathering and analyzing metrics, logs, and traces to infer the health of systems
E. It primarily deals with configuring system access and network traffic flow policies

Answer: A,C

NEW QUESTION # 84
A small organization of 20 employees is looking to deliver a network design service for modernizing customer networks to support advanced solutions.
* Project scope and weekly progress should be visualized by the management.
* Always consider feedback and make changes accordingly during the project.
* Should consider flexibility to change scope at the point of time.
Which project methodology meets the requirements and have the least impact on the outcome?

A. Kanban
B. Scrum
C. LEAN
D. Six-Sigma

Answer: B

Explanation:
https://firebrand.training/uk/blog/scrum-vs-six-sigma-which-one-is-right-for-you

NEW QUESTION # 85
Which aspect of BGP-LS makes it scalable in large networks when multiarea topology information must be gathered?

A. TCP-based flow control
B. Transmit flow control
C. Hardware flow control
D. Open-loop flow control

Answer: A

Explanation:
BGP-LS (BGP Link-State) distributes IGP topology information using BGP. When used in multi-area or multi-domain networks, BGP-LS allows for a centralized controller to receive topology information in a scalable way. BGP inherently runs over TCP, which provides reliable, ordered delivery using built-in flow control mechanisms.
The use ofTCP-based flow controlensures that even in large-scale networks where significant link-state information is exchanged, the flow of data between BGP peers remains efficient, controlled, and buffered according to the receiver's capacity. This makes it ideal for transporting massive amounts of LS data across wide areas and into SDN controllers for applications like traffic engineering or path computation.
Why other options are incorrect:
* A, B, and C refer to mechanisms that are not implemented or leveraged by BGP.
* TCP-based flow control is the only valid flow-control mechanism used in BGP sessions.

NEW QUESTION # 86
Refer to the exhibit.

As part of a redesign project, you must predict multicast behavior What happens to the multicast traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?

A. It is dropped due to an unsuccessful RPk8t8ck against the multicast receiver.
B. It is dropped due to an unsuccessful RPF check against the multicast source
C. It is switched due to a successful RPF check against the routing table
D. It is switched give that no RPF check is performed

Answer: B

Explanation:
https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450-mcastguide0.html When a multicast packet arrives on an interface, the RPF process checks to ensure that this incoming interface is the outgoing interface used by unicast routing in order to reach the source of the multicast packet. This RPF check process prevents loops. Multicast routing does not forward a packet unless the source of the packet passes a RPF check. Once a packet passes this RPF check, multicast routing forwards the packet based only upon the destination address.

NEW QUESTION # 87
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