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
