onnection connection-ess service datagram network provides network-layer connection/ess service virtual-circuit network provides network- layer connection service ,o analogous to TCP/ UDP connecton-oriented 7 connectionless transport-layer services but a service: host-to-host no choice: network provides one or the other implementation: in network core Network Layer 4-11Network Layer 4-11 Connection, connection-less service ❖ datagram network provides network-layer connectionless service ❖ virtual-circuit network provides network￾layer connection service ❖ analogous to TCP/UDP connecton-oriented / connectionless transport-layer services, but: ▪ service: host-to-host ▪ no choice: network provides one or the other ▪ implementation: in network core