300-435 Question 153
Single answerA network administrator is tasked with deploying a new branch office network. The administrator is considering whether to use a traditional network approach or a software-defined network (SDN) solution. The administrator needs a solution that simplifies network management, centralizes control, and allows for rapid configuration changes to accommodate evolving business needs. Which solution should the administrator choose, and why?
- A
Traditional network, because it provides physical hardware redundancy for high availability.
- B
Traditional network, because it offers a distributed control plane for better fault tolerance.
- C
Software-defined network (SDN), because it centralizes the control plane and enables programmable network management.
- D
Software-defined network (SDN), because it eliminates the need for hardware entirely.
Show answer and explanation
Correct answer: C
Explanation
The scenario emphasizes the need for simplified management, centralized control, and programmability, which are characteristics of SDN. Traditional networks rely on distributed control and manual configurations, making them less suitable for the described requirements. SDN's centralized control plane and programmability enable the flexibility and efficiency needed for this deployment.
- A. Incorrect.
While traditional networks provide physical hardware redundancy, this does not inherently simplify management or centralize control. The focus here is on operational efficiency, which is better addressed by SDN.
- B. Incorrect.
A distributed control plane is a characteristic of traditional networks and can provide fault tolerance. However, it does not address the need for centralized control or programmability, which are key requirements in the scenario.
- C. Correct.
SDN centralizes the control plane, enabling a single point of management and programmability. This approach simplifies network management and supports rapid configuration changes, meeting the needs of the scenario.
- D. Incorrect.
SDN does not eliminate the need for hardware; it abstracts the control plane from the hardware but still requires physical devices to operate. This statement is incorrect.