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Home  arrow Student Resources  arrow Chapter 1: Data communications and networking basics  arrow Multiple choice questions

Multiple choice questions

Try the following multiple choice questions to test your knowledge of this chapter. Once you have answered the questions, click on 'Submit Answers for Grading' to get your results.

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This activity contains 15 questions.

Question 1.
Telephone systems may be classified as:

 
End of Question 1


Question 2.
A network that provides a constant bandwidth for the complete duration of a message transfer is a:

 
End of Question 2


Question 3.
A router:

 
End of Question 3


Question 4.
The Internet is an example of a:

 
End of Question 4


Question 5.
A data link between the head office of a financial organization and one of its branches runs continuously at 2.048 Mbps. Between the hours of 0900 and 1700 it is noted that there are 295 bits received in error. Determine the bit error rate.

 
End of Question 5


Question 6.
The optical fibre trans-Atlantic cable TAT-14 includes a section from Bude, Cornwall to Tuckerton, New Jersey. Determine the propagation delay if the route length is 6,254 km.

 
End of Question 6


Question 7.
A file is downloaded to a home computer using a 56 kbps modem connected to an Internet Service Provider. If the download completes in 2 minutes, estimate the maximum size of data downloaded.


Open Hint for Question 7 in a new window.
 
End of Question 7


Question 8.
Baseband transmission may be defined as the transmission of a signal over a link:

 
End of Question 8


Question 9.
Skin effect may be described as:

(Note: more than one answer is correct.)

 
End of Question 9


Question 10.
A block of data consisting of 2048 bits is transmitted between two computers interconnected by 450 m of twisted-pair wire. If the transmission rate is 34 kbps determine a, the ratio of propagation delay to transmission delay.


Open Hint for Question 10 in a new window.
 
End of Question 10


Question 11.
Asynchronous transmission may be defined as:

 
End of Question 11


Question 12.
Synchronous transmission may be defined as:

 
End of Question 12


Question 13.
Manchester encoding is principally designed to:

 
End of Question 13


Question 14.
Is the following statement true of the Go-back-N error control strategy?

A transmitter may send up to N packets before it receives an acknowledgment.

   
 
End of Question 14


Question 15.
A protocol data unit (PDU) is exchanged between the same layer in two separate protocol stacks. It comprises the PDU passed from the layer immediately above and its own protocol control information.


Open Hint for Question 15 in a new window.
   
 
End of Question 15





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