COMPUTER NETWORKING

Detailed explanation-1: -Sender: A sender is a computer or any such device which is capable of sending data over a network. It can be a computer, mobile phone, smartwatch, walkie-talkie, video recording device, etc. Receiver: A receiver is a computer or any such device which is capable of receiving data from the network.

Detailed explanation-2: -FTP and HTTP are common methods of file transfer. FTP can be used to transfer files or access online software archives, for example. HTTP is the protocol used to indicate how messages are not only defined, but also transmitted.

Detailed explanation-3: -An output device is any hardware device used to send data from a computer to another device or user. Usually, most output peripherals are meant for human use, so they receive the processed data from the computer and transform it in the form of audio, video, or physical reproductions.

Detailed explanation-4: -The correct answer is Modem. A Modem (Modulator-Demodulator) is a hardware component that allows a computer or another device, such as a router or switch, to connect to the Internet.