What is a Network Packet?

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A network packet or packet is a generic term given to a data unit that is in the layer 3,4 or 5 of the OSI model.

Example

• in the data link layer, a ethernet packet is a frame packet
• in the Network Layer, a IP packet is is IP packet
• in the transport layer:
  • a TCP packet is a segment
  • a UDP packet is a datageam