Packet switching is a method of slicing __(71)__ messages into parcels called “packets,” sending the packets along different communication __(72)__ as they become available, and then reassembling the packets __(73)__they arrive at their destination. Prior to the development of packet switching, early computer networks used leased, dedicated telephone circuits to __(74)__ with terminals and other computers. In circuit-switched networks such as the telephone system, a complete point-to-point __(75)__ is put together, and then communication can procee

A. binary

B.useful

C.digital

D.analog

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