Packet
A unit of data formatted for transmission over a network, containing header information and payload.
Also: datagram · frame
Definition
A packet is a small unit of data transmitted over a network. When data is sent over the internet, it is broken into smaller packets, each containing a header (with source and destination IP addresses, packet number, and protocol information) and a payload (the actual data). Packets may travel different routes and arrive out of order, but protocols like TCP reassemble them in the correct sequence at the destination. Packet-switched networks are more efficient than circuit-switched networks.
Example
“Sending a 10 MB email attachment involves breaking it into thousands of packets, each routed independently and reassembled by the recipient's mail server.”
Usage Examples
- 1
“The team applied packet best practices to improve their networking outcomes significantly.”
- 2
“Understanding packet is essential for anyone building a career in IT & Technology.”
When & How to Use
Use 'Packet' when working in Networking contexts where a packet is a small unit of data transmitted over a network.
- ▸Applying packet principles during a networking project or initiative
- ▸Explaining packet to a junior team member or stakeholder unfamiliar with IT & Technology
- ▸Evaluating options or proposals using packet as a decision-making criterion
Etymology & Origin
The term 'Packet' derives from professional usage and entered IT & Technology professional usage as the field formalised in the 20th century.
History & Evolution
The concept of packet has evolved alongside IT & Technology. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of networking in the mid-20th century. Today, packet is a standard part of IT & Technology practice globally.
Synonyms
- data frame
- network datagram
- data unit
- network segment
Images
CC-licensed · free to useVideo
Related Terms
- tcp-ip
- network-protocol
- packet-loss
- mtu