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Cisco 400-007 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Security Design	15%	- Design secure perimeter and edge boundaries 1. Firewall and Intrusion Prevention System deployment modes 2. Enterprise cryptography architectures and VPN frameworks - Design secure infrastructure controls 1. Layer 2 and Layer 3 security defense mechanisms 2. Network virtualization security and microsegmentation
Topic 2: Network Design	30%	- Design Service Provider and Enterprise WAN architectures 1. WAN transport technologies including MPLS, Layer 3 VPN, and Metro Ethernet 2. Software-Defined WAN design implementations 3. Data center interconnect solutions - Design resilient and scalable campus architectures 1. High availability techniques and fast convergence mechanisms 2. Layer 2 and Layer 3 boundary definitions
Topic 3: Business Strategy Design	15%	- Evaluate project management methodologies impact 1. Agile framework and iterative lifecycle alignment 2. Waterfall framework implementation constraints - Assess business goals and drivers 1. Evaluate risk management and business continuity strategies 2. Determine regulatory and compliance constraints 3. Analyze company financial metrics and drivers like CAPEX, OPEX, and ROI
Topic 4: Service Design	15%	- Design infrastructure and network virtualization 1. MPLS architecture implementations such as LDP and Segment Routing 2. Cloud integration models including hybrid and multi-cloud environments - Incorporate automation and network programmability 1. Data parsing structures using JSON and XML formats 2. Infrastructure as Code tool adoption
Topic 5: Control, Data, Management Plane and Operational Design	25%	- Design control plane routing architectures 1. IPv4 and IPv6 dual-stack infrastructure transitions 2. Multicast routing designs and protocol options 3. Unicast routing protocols including OSPF, EIGRP, IS-IS, and BGP - Design data plane transport and management plane strategies 1. Network visibility, telemetry, and logging infrastructures 2. End-to-end Quality of Service policies

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q44-Q49):

NEW QUESTION # 44
What are two design constraints in a standard spine and leaf architecture? (Choose two.)

A. Spine switches can connect to each other.
B. Each leaf switch must connect to every spine switch.
C. Each spine switch must connect to every leaf switch.
D. Endpoints connect only to the spine switches.
E. Leaf switches must connect to each other.

Answer: B,C

NEW QUESTION # 45
SDN is still maturing. Throughout the evolution of SDN, which two things will play a key role in enabling a successful deployment and avoiding performance visibility gaps in the infrastructure? (Choose two.)

A. Dynamic real-time change
B. Peer-to-peer controller infrastructure
C. Integration of device context
D. Falling back to old behaviors
E. Rapid on-demand growth

Answer: A,C

Explanation:
* B (Dynamic real-time change):SDN must adapt dynamically as network demands and application requirements evolve.
* E (Integration of device context):Understanding device-level status, capabilities, and resource availability allows controllers to make informed decisions, reducing visibility gaps.
Other options explained:
* A: On-demand growth is a business benefit but not related to visibility/performance gaps.
* C: Reverting to legacy behaviors undermines SDN benefits.
* D: Peer-to-peer controllers help scale, but not directly tied to visibility gaps.

NEW QUESTION # 46
Which two conditions must be met for EIGRP to maintain an alternate loop-free path to a remote network? (Choose two.)

A. The Feasible Distance from a successor is lower than the local Reported Distance.
B. The Reported Distance from a successor is higher than the local Feasible Distance.
C. A feasible successor must be present.
D. The Reported Distance from a successor is lower than the local Feasible Distance.
E. The feasibility condition does not need to be met.

Answer: C,D

NEW QUESTION # 47
Which security architecture component offers streamlined security operations, ease of use, and visibility across all network security elements, independent of location or form factor?

A. threat-centric protection
B. central command and control
C. integrated actionable intelligence
D. distributed enforcement

Answer: B

Explanation:
Distributed Enforcement: Support for any form factor in any location. Network security services must be available in any location, in any form factor, and in any combination. This allows the security team to apply granular network security policies to network segments, flows, applications, or specific groups of users.

NEW QUESTION # 48
The Company XYZ network requires OSPF dead neighbor detection in a subsecond manner. However, the company network does not support BFD. Which other feature can be used to fulfill the design requirement?

A. Fast hello
B. DPD
C. STP
D. LFA

Answer: A

Explanation:
When Bidirectional Forwarding Detection (BFD) is not available, OSPF can still achieve subsecond convergence using the OSPF fast hello feature.
* Fast hello allows the configuration of OSPF hello/dead intervals to subsecond values (e.g., hello =
100ms, dead = 300ms).
* This accelerates OSPF's ability to detect neighbor failures based on missed hello packets without relying on external mechanisms like BFD.
Why other options are incorrect:
* A. STP (Spanning Tree Protocol) is unrelated to OSPF and is used at Layer 2.
* C. LFA (Loop-Free Alternate) is a fast reroute technique but does not affect neighbor failure detection.
* D. DPD (Dead Peer Detection) is used in VPN technologies (e.g., IPsec) and not applicable in OSPF.
Fast hello is fully aligned with CCDE v3.1 under "Protocol Design Implications" and is a commonly recommended method for improving IGP convergence performance when BFD is not an option.

NEW QUESTION # 49
......

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