What is connectionless-iterative server?

Answer 1

In connectionless server there is no need of establishment of connection with other party. Iterative server means server is handling the requests from different clients but one at a time. Server does not pay any attention to other clients while it is processing one client. Other requests are kept in queue waiting for their turn.

Connectionless Iterative ServerThe servers that use UDP are normally iterative, which means that the server processes one request at a time. A server gets the request received in a datagram from UDP, processes the request, and gives the response to UDP to send to the client. The server pays no attention to the other datagrams. These datagrams are stored in a queue, waiting for service. They could all be from one client or from many clients. In either case they are processed one by one in order of

arrival.

The server uses one single port for this purpose, the well-known port. All the datagrams arriving at this port wait in line to be served.

Generally the services provided by these iterative servers are one which takes very short time execute. Example service is the internet Daytime service, which returns the time and the date.