300-420 Question 164
Single answerAn enterprise is designing a network to connect multiple branch offices using Metro Ethernet. The enterprise requires high scalability, optimized bandwidth usage, and the ability to prioritize critical traffic. Which Metro Ethernet service should the enterprise choose to meet these requirements?
- A
E-LAN (Ethernet LAN)
- B
E-Line (Ethernet Line)
- C
E-Tree (Ethernet Tree)
- D
EVPL (Ethernet Virtual Private Line)
Show answer and explanation
Correct answer: A
Explanation
E-LAN (Ethernet LAN) is the most suitable Metro Ethernet service for an enterprise requiring high scalability, optimized bandwidth usage, and the ability to prioritize critical traffic across multiple branches. It supports any-to-any connectivity, making it ideal for connecting multiple branch offices efficiently.
- A. Correct.
E-LAN provides a fully meshed topology that allows any-to-any connectivity among multiple sites. This enables high scalability, optimized bandwidth usage, and the ability to prioritize critical traffic. It is ideal for connecting multiple branch offices.
- B. Incorrect.
E-Line provides point-to-point connectivity, which is suitable for connecting two locations but does not offer the scalability or optimized bandwidth usage needed for multiple branches.
- C. Incorrect.
E-Tree provides a hub-and-spoke topology, which is suitable for hierarchical communication but less efficient for any-to-any connectivity among branch offices.
- D. Incorrect.
EVPL offers point-to-multipoint connectivity but lacks the full scalability and flexibility provided by E-LAN for large-scale branch office connectivity.