Definition of "datagram" []

• A packet of data passed across a network (noun)

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• "Figure 1-10 Three Basic Components Make Up a Network Layer Packet Packet Network layer LLC MAC Upper layer Network layer Sublayer header Sublayer data trailer The term datagram usually refers to an information unit whose source and destination are network layer entities that use connectionless network service."
• "A datagram is a unit of data, which is what the protocols deal with."
• "The size of the data portion of the datagram is the total length minus the size of the header."