04 April, 2013

Computer Networks Part-1

 
1. Error detection at a data link level is achieved by  
1) bit stuffing
2) cyclic redundancy codes
3) Hamming codes
4) equalization

2. When the computer provides the manager with a multiple choice of possible answers, the prompting technique is  
1) question and answer
2) form filling
3) open-ended question
4) menu selection

3. Which data communication method is used to transmit the data over a serial communication link?  
1) simplex
2) half-duplex
3) full-duplex
4) None of above

4. What is the minimum number of wires needed to send data over a serial communication link layer?  
1) 1
2) 2
3) 4
4) 6

5. Most data communications involving telegraph lines use:  
1) simplex lines
2) wideband channel
3) narrowband channel
4) dialed service

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