What is the main benefit of redundancy in networks?

What is the main benefit of redundancy in networks?

• A. Increased security
• B. Fault tolerance
• C. More routers
• D. Lower latency

Answer: (B)

Redundancy in a network is about having extra paths, devices, and power options so a failure doesn’t take everything offline. The main benefit is fault tolerance: when a link or device fails, traffic can be automatically rerouted through spare paths, keeping services available and minimizing downtime. This reliability is the primary reason engineers add redundancy. It isn’t primarily about security, and simply having more routers doesn’t automatically fix security concerns. Latency isn’t guaranteed to improve just because there are extra paths, since traffic may need to be rerouted; the goal is to maintain operation even under failure.

Redundancy in a network is about having extra paths, devices, and power options so a failure doesn’t take everything offline. The main benefit is fault tolerance: when a link or device fails, traffic can be automatically rerouted through spare paths, keeping services available and minimizing downtime. This reliability is the primary reason engineers add redundancy. It isn’t primarily about security, and simply having more routers doesn’t automatically fix security concerns. Latency isn’t guaranteed to improve just because there are extra paths, since traffic may need to be rerouted; the goal is to maintain operation even under failure.