MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A hub is a networking device that connects multiple PCs to a single network, whereas a Switch connects multiple devices on a single computer network. A hub operates on the OSI physical layer, whereas a switch operates on the OSI data link layer.

Detailed explanation-2: -A hub is a physical layer networking device which is used to connect multiple devices in a network. They are generally used to connect computers in a LAN. A hub has many ports in it. A computer which intends to be connected to the network is plugged in to one of these ports.

Detailed explanation-3: -Modern switches are capable of switching traffic between multiple ports simultaneously. A network with a switch at the core and multiple devices connected in a star topology is called a Local Area Network, or LAN; the LAN may itself be connected to another network.

Detailed explanation-4: -A device at the center of a star topology network. Hubs can be active (where they repeat signals set to them) or passive (where they do not repeat but merely split signals sent through them). Hub may refer to a repeater, bridge, switch, router, or any combination of these.