Computer Networking
RS-232-G

specifies only the mechanical characteristics of an interface by providing a 25-pin connector
is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
None of these
is an interface between two data circuit terminating equipment as examplified by a local and remote modem

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
Bulletin board system

converts analog signals to digital signals
is a modem capable of accepting commands
is a public access message system
None of these
converts digital signals to analog signals

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
The difference between a multiplexer and a statistical multiplexer is

Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
None of these
Statistical multiplexers need buffers while multiplexers do not need buffers

ANSWER DOWNLOAD EXAMIANS APP