CompTIA Network+ Question C-26

Network segmentation provides which of the following benefits?

A. Security through isolation
B. Link aggregation
C. Packet flooding through all ports
D. High availability through redundancy

Correct Answer: A

Network segmentation in computer networking is the act or profession of splitting a computer network into subnetworks, each being a network segment. Advantages of such splitting are primarily for boosting performance and improving security through isolation.
Advantages of network segmentation:
Improved security: Broadcasts will be contained to local network. Internal network structure will not be visible from outside
Reduced congestion: Improved performance is achieved because on a segmented network there are fewer hosts per subnetwork, thus minimizing local traffic Containing network problems: Limiting the effect of local failures on other parts of network