350-401 Question 343
Single answerA network administrator is tasked with implementing a new routing protocol in a multi-vendor environment. The network contains routers from different vendors, and the administrator needs to ensure that the routing protocol supports scalability, fast convergence, and is standards-based to maintain interoperability. Which routing protocol should the administrator choose?
- A
OSPF
- B
EIGRP
- C
RIP
- D
IS-IS
Show answer and explanation
Correct answer: A
Explanation
In a multi-vendor environment, choosing a routing protocol that is standards-based and widely supported across different vendors is critical. OSPF satisfies these requirements as it is a widely adopted link-state protocol known for its scalability, fast convergence, and interoperability. Other protocols, like EIGRP, lack interoperability due to being proprietary, while RIP and IS-IS either lack scalability or are less commonly used in such scenarios.
- A. Correct.
OSPF (Open Shortest Path First) is a standards-based, link-state routing protocol widely supported in multi-vendor environments. It offers fast convergence, scalability, and interoperability, making it the best choice for this scenario.
- B. Incorrect.
EIGRP (Enhanced Interior Gateway Routing Protocol) is a Cisco proprietary protocol. While it is efficient and scalable, it is not suitable for a multi-vendor environment due to the lack of interoperability with non-Cisco devices.
- C. Incorrect.
RIP (Routing Information Protocol) is a distance-vector protocol that is standards-based and interoperable. However, it lacks scalability and fast convergence, making it unsuitable for modern networks requiring high performance.
- D. Incorrect.
IS-IS (Intermediate System to Intermediate System) is a standards-based protocol that supports scalability and fast convergence. However, it is less commonly used in multi-vendor environments compared to OSPF, and its adoption is often limited to specific use cases.