MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A modem typically connects to a router, which receives internet access from the modem and sends it to other devices on the network. Modems can use Ethernet cable, DSL, fiber or wireless mediums for connectivity.

Detailed explanation-2: -A hub is a device to which all devices sharing a physical network can be a physically connected to form a Local Area Network or LAN. Hubs do little more than enable the electrical currents from a computer sending a packet to pass to all other devices connected to it.

Detailed explanation-3: -The correct answer is Star. A star topology is a topology for a Local Area Network (LAN) in which all nodes are individually connected to a central connection point, like a hub or a switch. The central hub is usually a fast, self-contained computer and is responsible for routing all traffic to other nodes.

Detailed explanation-4: -A star network is a local area network (LAN) topology in which all nodes–personal computers (PCs), workstations or other devices–are directly connected to a common central computer that is often referred to as a hub. Therefore, a star network is often referred to as a hub-and-spoke network topology.

Detailed explanation-5: -The primary piece of hardware you need is a modem. The type of Internet access you choose will determine the type of modem you need. Dial-up access uses a telephone modem, DSL service uses a DSL modem, cable access uses a cable modem, and satellite service uses a satellite adapter.