COMPUTER NETWORKING

Detailed explanation-1: -Virtual circuit and datagram networks are computer networks that provide connection oriented and connectionless services respectively.

Detailed explanation-2: -A datagram network is connectionless, and the network switches do not have the state information needed to distinguish packets from different applications. As a result, the network cannot dedicate resources that are specific to individual applications.

Detailed explanation-3: -A datagram is an independent, self-contained message sent over the network whose arrival, arrival time, and content are not guaranteed.

Detailed explanation-4: -The term connectionless describes a type of communication service that enables data to be transferred between network endpoints. The sending endpoint does not try to establish a dedicated, end-to-end connection with the receiving endpoint or even try to ensure that the receiver is available to accept the data.