Networking - Networking Basics - Discussion

A 10/100Mbps hub must share its bandwidth with each and every one of its ports. So when only one PC is broadcasting, it will have access to the maximum available bandwidth. If, however, multiple PCs are broadcasting, then that bandwidth will need to be divided among all of those systems, which will degrade performance.

A switch, however, keeps a record of the MAC addresses of all the devices connected to it. With this information, a switch can identify which system is sitting on which port. So when a frame is received, it knows exactly which port to send it to, without significantly increasing network response times.

And, unlike a hub, a 10/100Mbps switch will allocate a full 10/100Mbps to each of its ports. So regardless of the number of PCs transmitting, users will always have access to the maximum amount of bandwidth. It's for these reasons a switch is considered to be a much better choice then a hub.

No, since last mile is Hub, that is on layer 1 device and doesn't break broadcast domain as well collision domain, so it will share the available bandwidth into no of connected users. Answer B is valid.

Can some one give clarify it.

How is it 10 mbps?

If it is full duplex?

Hub and switch are designed in such a way that there should not be any change in the frequency, if frequency remain same so as the bandwidth remain same, the only chances are for data collision.