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Computer Networking

Computer Networking
What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard?

6
None of these
2
4
3

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Computer Networking
Which of the following communications modes support two-way traffic but in only one direction of a time?

full-of the above
simplex
three-quarters duplex
half-duplex
None of these

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Computer Networking
Select correct type of line configuration:

Multi-point
Dedicated point
Single point
Link

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Computer Networking
Modem is used in data transmission. When was it invented and in which country?

1950, Japan
None of these
1965, Germany
1963, USA
1950, USA

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Computer Networking
What function does a serial interface perform in data communication?

Converts analog signals into digital signals
Converts parallel data into a stream of bits
None of these
Decodes incoming signals into computer data
Converts serial data into audio signals

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Computer Networking
What are two purposes for segmentation with a bridge?1. To add more broadcast domains.2. To create more collision domains.3. To add more bandwidth for users.4. To allow more broadcasts for users.

2 and 3
2 and 4
4 only
1 only

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