What benefit does network segmentation provide?

• A. Easier to manage
• B. Security through isolation
• C. Increased throughput
• D. Reduced latency

Answer: (B)

Dividing a network into segments creates isolation between parts of the network, so traffic between segments is restricted and inspected. If a device in one segment is compromised, the attacker faces barriers to reach devices in other segments, containing the impact to a smaller area. This containment is the core benefit, along with the ability to apply targeted security controls and monitoring per segment. While segmentation can aid policy enforcement and reduce broadcast traffic, it isn’t primarily about increasing throughput or reducing latency; in fact, there can be a bit of overhead from routing and inspection. So the primary advantage is security through isolation.