Which of the following is an advantage of Distance Vector routing algorithms?

• A. Simple to understand and configure.
• B. They require heavy processing power.
• C. They provide perfect accuracy quickly.
• D. They support large networks extremely well.

Answer: (A)

Distance Vector routing algorithms are easy to use because they rely on simple, neighbor-to-neighbor updates and a straightforward metric like hop count. You only configure a few directly connected neighbors and set a couple of timers, and routes are learned automatically as each router shares its distance vector with its neighbors. This makes setup and basic operation intuitive, especially on small networks where the topology isn’t complex.

The simplicity is what makes this approach advantageous. In contrast, more complex methods require more processing, a full network map, and tighter synchronization, which isn’t necessary for DV routing.

These algorithms aren’t known for fast, perfect convergence. Updates can take time to propagate, and there’s potential for routing loops or the count-to-infinity problem, which means they don’t guarantee instant, flawless accuracy. They also don’t scale as well to large networks, where the overhead of frequent updates and slower convergence becomes more noticeable. For larger deployments, more scalable approaches like Link-State routing are often better suited.

So, the key benefit is the ease of understanding and configuring Distance Vector routing, especially in smaller networks.