1.What is PPDIOO Methodology?

Ans:

PPDIOO stands for Prepare, Plan, Design, Implement, Operate, and Optimize. PPDIOO is a Cisco methodology that defines the continuous life-cycle of services required for a network.

Prepare phase: The Prepare phase involves establishing the organizational (business) requirements, developing a network strategy, and proposing a high-level conceptual architecture, identifying technologies that can best support the architecture.

Plan phase: This phase involves identifying the network requirements, which are based on the goals for the network, where the network will be installed, who will require which network services, and so forth.

Design phase: The network design specification that is produced is a comprehensive detailed design that meets current business and technical requirements and incorporates specifications to support availability, reliability, security, scalability, and performance. This design specification provides the basis for the implementation activities.

Implement phase: Implementation and verification begins after the design has been approved. The network and any additional components are built according to the design specifications, with the goal of integrating devices without disrupting the existing network or creating points of vulnerability.

Operate phase: Operation is the final test of the design’s appropriateness. The Operate phase involves maintaining network health through day-to-day operations, which might include maintaining high availability and reducing expenses. Optimize phase: The Optimize phase is based on proactive network management, the goal of which is to identify and resolve issues before real problems arise and the organization is affected.

2.What are the Benefits of the Lifecycle Approach to Network Design?

Ans:

The network lifecycle approach provides many benefits, including the following:

1. Lowering the total cost of network ownership
2. Increasing network availability
3. Improving business agility
4. Accelerating access to applications and services

3.What is cisco Sona framewok?

Ans:

The Cisco SONA is an architectural framework that illustrates how to build integrated systems and guides the evolution of enterprises toward more intelligent networks. Using the SONA framework, enterprises can improve flexibility and increase efficiency by optimizing applications, business processes, and resources to enable IT to have a greater effect on business.

4.What are the three different layers of Cisco SONA Framework?

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a) Networked Infrastructure layer: The objective of this layer is to provide connectivity, anywhere and anytime. The Networked Infrastructure layer includes the network devices and links to connect servers, storage, and clients in different places in the network.

b).Interactive Services layer: Includes both application networking services and infrastructure services. This layer enables efficient allocation of resources to applications and business processes delivered through the networked infrastructure.

c) Application layer: This layer includes business applications and collaboration applications. The objective of this layer is to meet business requirements and achieve efficiencies by leveraging the interactive services layer.

5.What are the benefits of SONA ?

Ans:

Functionality: Supports the organizational requirements.

Scalability: Supports growth and expansion of organizational tasks by separating functions and products into layers; this separation makes it easier to grow the network.

Availability: Provides the necessary services, reliably, anywhere, anytime.

Performance: Provides the desired responsiveness, throughput, and utilization on a preapplication basis through the network infrastructure and services.

Manageability: Provides control, performance monitoring, and fault detection.

Efficiency: Provides the required network services and infrastructure with reasonable operational costs and appropriate capital investment on a migration path to a more intelligent network, through step-by-step network services growth.

Security: Provides for an effective balance between usability and security while protecting information assets and infrastructure from inside and outside threats.