Which of the situations might not require multiple routing protocols in a network?

In a networked environment, the choice to use multiple routing protocols depends on the network’s specific needs, design, scalability, and complexity. There are several scenarios where a single routing protocol might suffice, meaning multiple routing protocols might not be necessary. These situations often include:

1. Small to Medium-Sized Networks: Smaller networks, where scalability is less of a concern, can often be efficiently managed using a single routing protocol. When the network does not span multiple administrative boundaries or technological differences, a single routing protocol can maintain simplicity and reduce administrative overhead.

2. Homogeneous Networks: In networks where all routers support the same routing protocol and there’s no need to interact with different networks that might use different protocols, sticking with a single routing protocol is straightforward and efficient.

3. Networks with a Single Vendor Infrastructure: Some networks primarily use networking equipment from a single vendor. In these cases, choosing a single routing protocol that is optimized for that vendor’s hardware can simplify configuration and maintenance.

4. Networks without the Need for External Routing: In isolated or self-contained networks that do not require the exchange of routing information with outside networks or the internet, a single routing protocol, or even static routing, might be sufficient.

5. Cost-Sensitive Environments: Deploying and managing multiple routing protocols can increase the complexity and cost of network administration. In scenarios where budget constraints are a primary concern, sticking to a single, well-chosen routing protocol can minimize costs related to