MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Generally, a switch is much faster than a hub and reduces collisions/retransmissions. Switches send traffic only to the destination device/port, while hubs broadcast the data to all ports. If you have a choice, a switch will provide more reliable and faster transfers of data.

Detailed explanation-2: -A switch is smarter than a hub. Similar to the hub, it is a connection point for all the devices in the network. However, it is more efficient at passing a data packet across the network. It records the MAC addresses of the computers connected to it in a tabular format.

Detailed explanation-3: -Why are switches more secure than hubs? Switches don’t require port mirroring for a network analyst to monitor traffic. Switches operate in the application layer of the OSI model. All types of switches must be manually configured in order to operate.

Detailed explanation-4: -Switches prevent collision by buffering Ethernet frames, that is, if multiple nodes want to send data to a single node, switch makes sure that the data are transmitted from the switch port in series by buffering the data in switch memory (forms queue) and hence avoiding collision.

Detailed explanation-5: -A switch connected to a hub (or another non full-duplex capable device) can still use half-duplex mode on any of its ports but due to the buffering between the ports, any collision will not propagate across the switch-the switch will simply retransmit the buffered frame later on.