Friday, April 20, 2018
Computer network assignment
Posted by Rajnish Kumar
Assignment:-01
Q 1. What is polling in control access ?
Ans:-Polling is the process of sending a signal to a client (a computer or terminal) that gives it permission to transmit or asks it to receive. With polling, the clients store all messages that need to be transmitted. Periodically, the server (usually a mainframe computer) polls the client to see if it has data to send. If the client has data to send, it does so. If the client has no data to send, it responds negatively, and...