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Computer Networking

Computer Networking
Which encapsulations can be configured on a serial interface?1. Ethernet2. Token Ring3. HDLC4. Frame Relay5. PPP

All of these
2 only
3, 4 and 5
1 and 4

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Computer Networking
The number of cross point needed for 10 lines in a cross point switch which is full duplex in nature and there are no self connection is

90
50
45
100

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Computer Networking
The term "remote job entry" relates to

transaction processing
distributed processing
None of these
batch processing
realtime processing

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Computer Networking
The CCITT Recommendation X.25 specifies three layers of communications:

Session, transport and network
application, presentation and session
datalink, network and transport
physical datalink and network
None of these

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Computer Networking
Which of the following communications lines is best suited to interactive processing applications?

simplex lines
narrowband channels
None of these
mixed band channels
full-duplex lines

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Computer Networking
In a synchronous modem, the digital-to-analog converter transmits signal to the

demodulator
terminal
modulator
equalizer
None of these

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