Computer Networking - Computer Science Questions and Answers

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The method of communication in which transmission takes place in both directions, but only one direction at a time is called

Simplex

Four wire circuit

Full Duplex

Half Duplex

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Error detection at the data link level is achieved by

Bit Stuffing

Cyclic Redundancy Code

Hamming Code

Equalization

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Which of the following is a wrong example of network layer?

Internet Protocol (IP) - ARPANET

X.25 Packet Level Protocol (PLP)-ISO

Source routing and domain naming-USENet

X.25 level 2-ISO

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The topology with highest reliability is:

Bus topology

Star topology

Ring topology

Mesh topology

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"BAUD" rate means

The number of bits transmitted per unit time.

The number of bytes transmitted per unit time.

The rate at which the signal changes.

None of the above

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Start and stop bits are used in serial communication for

Error detection

Error correction

Synchronization

Slowing down the communication

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Unmodulated signal coming from a transmitter is know as

Carrier signal

Baseband signal

Primary signal

None of these

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How many Character per sec(7bits + 1parity) can be transmitted over a 2400 bps line if the transfer is synchronous (1 "Start" and 1 "stop" bit)?

300

240

250

275

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Which one of the following network uses dynamic or adaptive routing?

TYMNET

ARPANET

SNA(IBM's System Network Architechture)

None of these