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Cisco 400-007 Exam Syllabus Topics:

SectionWeightObjectives
Control, Data, Management Plane and Operational Design25%- Design data plane transport and management plane strategies
  • 1. End-to-end Quality of Service policies
  • 2. Network visibility, telemetry, and logging infrastructures
- 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
Service Design15%- Incorporate automation and network programmability
  • 1. Data parsing structures using JSON and XML formats
  • 2. Infrastructure as Code tool adoption
- Design infrastructure and network virtualization
  • 1. Cloud integration models including hybrid and multi-cloud environments
  • 2. MPLS architecture implementations such as LDP and Segment Routing
Business Strategy Design15%- Assess business goals and drivers
  • 1. Determine regulatory and compliance constraints
  • 2. Analyze company financial metrics and drivers like CAPEX, OPEX, and ROI
  • 3. Evaluate risk management and business continuity strategies
- Evaluate project management methodologies impact
  • 1. Waterfall framework implementation constraints
  • 2. Agile framework and iterative lifecycle alignment
Security Design15%- Design secure infrastructure controls
  • 1. Layer 2 and Layer 3 security defense mechanisms
  • 2. Network virtualization security and microsegmentation
- Design secure perimeter and edge boundaries
  • 1. Enterprise cryptography architectures and VPN frameworks
  • 2. Firewall and Intrusion Prevention System deployment modes
Network Design30%- Design Service Provider and Enterprise WAN architectures
  • 1. Data center interconnect solutions
  • 2. Software-Defined WAN design implementations
  • 3. WAN transport technologies including MPLS, Layer 3 VPN, and Metro Ethernet
- Design resilient and scalable campus architectures
  • 1. High availability techniques and fast convergence mechanisms
  • 2. Layer 2 and Layer 3 boundary definitions

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q361-Q366):

NEW QUESTION # 361
According to the CIA triad principles for network security design, which principle should be priority for a Zero Trust network?

Answer: D

Explanation:
* A (Encryption + strong authentication) aligns most closely with Zero Trust's emphasis on always verifying identity and protecting data as it moves across untrusted networks.
* Data-in-motion encryption ensures confidentiality, and two-factor authentication ensures strict identity verification.
Why other options are incorrect:
* B: Data-at-rest encryption is important but not as critical as controlling data in motion for Zero Trust.
* C: Categorization helps in segmentation but is not the core Zero Trust principle.
* D: High availability is a design requirement, not the primary Zero Trust security control.
-


NEW QUESTION # 362
Refer to the exhibit.

Refer to the exhibit. A new high availability DB server cluster is installed in the network. These two servers require high bandwidth and low latency Layer 2 connectivity for database replication.
Which solution supports these requirements?

Answer: C

Explanation:
To support high-bandwidth, low-latency Layer 2 communication between DB Server 1 and DB Server 2, you must create a direct Layer 2 path between SW1 and SW2. Using REP (Resilient Ethernet Protocol) segments ensures loop-free Layer 2 operation without the drawbacks of STP convergence delays.
Option C is correct: Adding a third REP segment (Segment 3) directly between SW1 and SW2 isolates the traffic between the two DB servers and ensures deterministic behavior with fast convergence.
Option A (LACP with STP) introduces STP blocking and doesn't align well with REP ' s control plane.
Option B and D: Overloading existing segments or splitting new links into existing REP segments does not offer the same direct path, bandwidth, or deterministic behavior.


NEW QUESTION # 363
Drag and Drop Question
Security experts promote the security defense-in-depth principle, which states that network security should be multilayered and modular and multiple methods should be designed and applied to different parts of the network. Drag and drop the characteristics on the left to the matching enterprise network components on the right.

Answer:

Explanation:


NEW QUESTION # 364
A customer is migrating from a traditional Layer 2 data center to a VXLAN spine-leaf SDN architecture.
Applications cannot be readdressed, and migration must occur incrementally. How should the legacy and new networks be connected?

Answer: B

Explanation:
#Explanation:
* D: A Layer 2 trunk to the border leaf allows seamless VLAN extension between the legacy Layer 2 domain and the VXLAN-based fabric. This supports application migration without readdressing.
Border leaf switches are used to bridge the traditional and VXLAN segments while maintaining MAC learning and VLAN consistency.
Incorrect Options:
* A & B: Layer 3 links alone would require readdressing or routing, violating the constraint.
* C: Spine switches typically do not handle VLAN bridging or policy enforcement directly.


NEW QUESTION # 365
In a redundant hub and spoke "wheel" design, all spokes are connected to the hub, and spokes are connected to other spokes as well. During failure on one spoke link, the traffic from that site can be sent to a neighboring site for it to be forwarded to the hub site. But during peak hours, a link is overloaded and traffic is re-routed to a neighbor, which subsequently becomes overloaded. This overload results in network traffic oscillation as the load varies at each spoke site. This design provides more redundancy but not more resiliency because the routing protocol must process many alternate paths to determine the lowest cost path. Which two design changes help to improve resilience in this case? (Choose two.)

Answer: A,E


NEW QUESTION # 366
......

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