Which of the following statement is incorrect?

CBSE Class 10 Computer Science Computer Network Quiz

Quiz
•
Preethi Thiru
•
Others
•
KG
•
Hard
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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line
HDLC is a standard synchronous communication protocol
RTS/CTS is the way the terminal indicates ringing
RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCE indicates that it is ready to accept data
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Terminals are required for?
real-time, time sharing & message switching
real time, distributed processing & manager inquiry
real time, time-sharing & distributed message processing
real-time, batch processing & time-sharing
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which data communication method is used to transmit the data over a serial communication link?
simplex
half-duplex
band
full-duplex
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the minimum number of wires needed to send data over a serial communication link layer?
1
4
2
6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following types of channels moves data relatively slowly?
narrow band channel
voice band channel
wide band channel
fiber optic channel
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Most data communications involving telegraph lines use?
narrowband channel
wideband channel
dialed service
simplex lines
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The synchronous modems are more costly than the asynchronous modems because?
they operate with a larger bandwidth
they transmit the data with stop and start bits
they produce large volume of data
they contain clock recovery circuits
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