As the network administrator wants to logically separate web servers on the network, a Switch can be used to achieve this. A Switch has to be configured on the network to achieve this. So, option (b) is correct. Option (a) Router is false as the purpose of a router is to connect multiple networks and route the packets in the network group. Option (c) Hub is used for different purpose and not for this. Similarly, option (d) Bridge is not used for this purpose.
The web servers can only be separated by means of switch. The switch is a series of systems that separate the web servers on the internet. This is done for efficient connectivity on the server network.
