A level Computer Networks - Data Communication and Network Security Quiz 2

15 Questions

Quiz Description

These quizzes will give you a better understanding of computer networking and data communication and security, data communication is very important in networking as devices such as printers have to communicate through sending and retrieving information with their computer in order to actually print something. Also, the exchange of information by means of e-Mails and information sharing by using the Web or Internet are very important functions of data communication.

Data communication, therefore, is the transmission of this digital data between two or more computers in a computer network or in a data network like a telecommunications network that allows computers to exchange data. When data communication takes place, data is represented as an electromagnetic signal, such as an electrical voltage, radio wave, microwave, or even infrared signal. These signals are sent over a channel, such as copper wire and optical fibers.

You will find more quizzes on Networking and data communication along with network security. These quizzes are exam standards and will help anyone preparing for upcoming exams in computer science as this is a very good exam topic in computer science. 

1:

 What uses a physical star topology ? 


Correct
  • 1:
    10 base 5
  • 2:
    10 base T
  • 3:
    10 base 2
  • 4:
    .None of these
2:

 The monitor station in what standard ensures that one and only one token is circulating ? 


Correct
  • 1:
    802.5
  • 2:
    802.3
  • 3:
    Both (a) and (b)
  • 4:
    All of these
3:

 What can happen at a Token Ring station  


Correct
  • 1:
    Examination of the destination address
  • 2:
    Regeneration of the frame
  • 3:
    Passing of the frame to the next station
  • 4:
    All of these
4:

 In Token Ring, when a frame reaches its destination station, then 


Correct
  • 1:
    message is copied
  • 2:
    four bits in the packet are changed
  • 3:
    message is taken of the ring and replaced by the token
  • 4:
    both (a) and (b)
5:

 Which of the following is not a transceiver function? 


Correct
  • 1:
    Transmission and receipt of data
  • 2:
    Addition and subtraction of headers
  • 3:
    Checking of line voltages
  • 4:
    Collision detection
6:

 The station-to-hub distance in which of the following is 2000 meters ? 


Correct
  • 1:
    100 Base-TX .
  • 2:
    100 Base - T4
  • 3:
    100 Base-FX
  • 4:
    100 Base - T1
7:

 Ether LAN uses 


Correct
  • 1:
    manchester encoding
  • 2:
    NRZ
  • 3:
    polar encoding
  • 4:
    diferential manchester encoding
8:

 Which of the given below  houses the switches in Token Ring ? 


Correct
  • 1:
    NIC
  • 2:
    MAU
  • 3:
    Transceiver
  • 4:
    Nine-pin connector
9:

 Which of the following uses an 8B/6T encoding scheme? 


Correct
  • 1:
    100 Base-TX
  • 2:
    100 Base-T1
  • 3:
    100 Base-T4
  • 4:
    100 Base-FX
10:

 IBM's Token-Ring network uses 


Correct
  • 1:
    adaptive routing
  • 2:
    spanned tree routing
  • 3:
    alternative routing
  • 4:
    source routing
11:

 In which circuit switching, delivery of data is delayed because data must be stored and retrieved from RAM  


Correct
  • 1:
    space-division
  • 2:
    virtual
  • 3:
    time-division
  • 4:
    packet
12:

 If a network designer wants to connect 5 routers as point-to-point simplex line, then total number of lines required would be 


Correct
  • 1:
    10
  • 2:
    5
  • 3:
    20
  • 4:
    32
13:

 To interface a computer terminal with a modem, required physical layer standard is 


Correct
  • 1:
    RS 424 - A
  • 2:
    .RS 449
  • 3:
    RS 232 - C
  • 4:
    Either (b) or (c)
14:

  A 100 km long cable runs at the T1 data rate. The propagation speed in the cable is half the speed of light. How many bits is in the cable ? 


Correct
  • 1:
    572
  • 2:
    772
  • 3:
    873
  • 4:
    672
15:

 How much bandwith is there in 0.1 micron of spectrum at a wavelength of 1 micron ? 


Correct
  • 1:
    20,000 GHz
  • 2:
    30,000 GHz
  • 3:
    25,000 GHz
  • 4:
    None of these

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A level Computer Networks - Data Communication and Network Security Quiz 2
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