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CCDE v3.0 400-007: Which methodology is the leading lifecycle approach to network design and implementation?

By: Author Alex Lim

Posted on  - Last updated:

Categories Exam

Question

Which methodology is the leading lifecycle approach to network design and implementation?

A. Waterfall model
B. PPDIOO
C. Spiral model
D. V model

Answer

B. PPDIOO

Explanation

The methodology that is considered the leading lifecycle approach to network design and implementation in the context of Cisco networking is:

B. PPDIOO (Prepare, Plan, Design, Implement, Operate, Optimize)

The PPDIOO methodology is widely recognized and used by Cisco for network design and implementation. Here’s a comprehensive explanation of why PPDIOO is the leading lifecycle approach:

  1. Prepare:
    • In the Prepare phase, the requirements and goals of the network design are identified, along with the resources and constraints that need to be considered.
    • This phase involves understanding the business needs, analyzing existing infrastructure, and gathering necessary information.
  2. Plan:
    • The Plan phase involves creating a high-level strategy and roadmap for the network design. It includes defining the network architecture, technologies, protocols, and services required to meet the identified requirements.
    • This phase also considers factors like scalability, security, resiliency, and performance.
  3. Design:
    • In the Design phase, the detailed network design is developed based on the plan created in the previous phase.
    • This includes designing network topologies, addressing schemes, security policies, Quality of Service (QoS) mechanisms, and other relevant configurations.
    • The design should align with industry best practices and meet the identified requirements.
  4. Implement:
    • The Implement phase involves deploying the designed network infrastructure based on the detailed design specifications.
    • This includes procuring hardware, installing and configuring network devices, and ensuring proper connectivity between network components.
    • Implementation should follow the design documentation and be carried out with minimal disruption to the existing network.
  5. Operate:
    • The Operate phase focuses on the day-to-day management and maintenance of the network infrastructure.
    • This includes monitoring network performance, troubleshooting issues, and ensuring network availability and reliability.
    • Operational processes, such as configuration management, change management, and incident response, are established to support ongoing network operations.
  6. Optimize:
    • The Optimize phase involves continuously evaluating and improving the network design and operations based on performance metrics, user feedback, and emerging technologies.
    • This phase aims to identify areas of improvement, optimize network performance, and address any evolving business requirements.

The PPDIOO methodology provides a systematic and structured approach to network design and implementation, ensuring that networks are designed to meet specific requirements and are effectively deployed and operated. It emphasizes the importance of planning, design, and ongoing optimization to create robust, scalable, and efficient networks.

Please note that while other methodologies like the Waterfall model, Spiral model, and V model may be used in software development or engineering projects, PPDIOO is specifically tailored for network design and implementation and is widely recognized in the networking industry, particularly in the Cisco ecosystem.

Reference

Cisco Certified Design Expert CCDE v3.0 400-007 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Design Expert CCDE v3.0 400-007 exam and earn Cisco Certified Design Expert CCDE v3.0 400-007 certification.