computer networks set 3 Detailed Explanation And More Example

Question : 1

Which of the following statement is incorrect?

a) Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of. data on one communication tine

b) RTS/CTS is the way the terminal indicates ringing

c) RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data

d) HDLC is a standard synchronous communication protocol.

Question : 2

What is the main difference between DDCMP and SDLC? .

a) DDCMP has a message header

b) DDCMP does not need special hardware to final the beginning of a message

c) SDLC has a IP address

d) SDLC does not use CRC

e) none of the above

Question : 3

The common name for a modulator-demodulator is __________.

a) modem

b) joiner

c) networker

d) connector

e) demod

Question : 4

To connect networks of similar protocols ______ are used

a) Routers

b) Bridges

c) Gateways

d) Dial-up routers

e) None of these

Question : 5

Bluetooth is an example of __________.

a) Personal area network

b) Local area network

c) Virtual private network

d) Wide area network

e) None of these

Question : 6

Which of the following types of channels moves data relatively slowly?

a) narrow band channel

b) voice band channel

c) wide band channel

d) side band channel