Network services Synchronous(stream) Session appears as a continuous stream of traffic(. g, voice) Usually requires fixed and limited delays Asynchronous (bursty) Session appears as a sequence of messages Typically bursty E.g., Interactive sessions, file transfers, email Connection oriented services Long sustained session Orderly and timely delivery of packets E.g., Telnet, FTP Connectionless services One time transaction(e.g, email) QoS Slide 10Network services • Synchronous (stream) – Session appears as a continuous stream of traffic (e.g, voice) – Usually requires fixed and limited delays • Asynchronous (bursty) – Session appears as a sequence of messages – Typically bursty – E.g., Interactive sessions, file transfers, email • Connection oriented services – Long sustained session – Orderly and timely delivery of packets – E.g., Telnet, FTP • Connectionless services – One time transaction (e.g., email) • QoS Eytan Modiano Slide 10