Question

_______ information technology (IT) is a discrete segment of data sent over a network.
1. Packet
2. Program
3. Bit
4. Registrar

Answer 1

Correct Answer - Option 1 : Packet

• In networking, a packet is a small segment of a larger message. Data sent over computer networks, such as the Internet, is divided into packets. These packets are then recombined by the computer or device that receives them. 
• Suppose a user needs to load an image. The image file does not go from a web server to the user's computer in one piece. Instead, it is broken down into packets of data, sent over the wires, cables, and radio waves of the Internet, and then reassembled by the user's computer into the original photo.
• A packet header is a "label" of sorts, which provides information about the packet’s contents, origin, and destination.

 

• Packet headers go at the front of each packet. Routers, switches, computers, and anything else that processes or receives a packet will see the header first. A packet can also have trailers and footers attached at the end. Like headers, these contain additional information about the packet.
•  IP (Internet Protocol) is a network layer protocol that has to do with routing. It is used to make sure packets arrive at the correct destination.
• "Datagram" is a segment of data sent over a packet-switched network. A datagram contains enough information to be routed from its source to its destination. By this definition, an IP packet is one example of a datagram. Essentially, the datagram is an alternative term for ";packet.".