Question

what is fax? explain its process and advantages

Answer 1

fax means
Faxes are a fairly inexpensive method of sending a message - just the cost of a telephone call along with paper and ink for receiving faxes
and to know advantages refer this link i might may help u 
http://www.teach-ict.com/gcse_new/communication/comm_methods/miniweb/pg5.htm