Learn in the textbookInternet Connection Services and Telecommunications Carriers
DefinitionPacket communication (パケット通信) is a method that splits data into small chunks called packets (パケット) and sends them chunk by chunk.
ExplanationNo single communication monopolizes a path; many share the same one, so the line is used efficiently. This way of sending is called packet switching (パケット交換方式), and internet communication works this way.
AnalogyIt is like packing for a move in numbered boxes, sending them by a courier that mixes them with other people's parcels, and opening them in number order at the new place.
Memory hookPacket means a small parcel: pack plus -et, a suffix that signals smallness.