Computer Science Mock Test UGC-NET (Paper II & III- Computer Networks) - Part 25

This Quiz is posted with the sole aim of guiding the aspirants of UGC-NET /CSIR -NET Exam to the path of success. To sharpen the edges of your own intelligence and practice, in a structured and concrete manner to ensure you definite Success in your endeavor and will Pave your way for a successful career in Teaching (or) Research Profession . All the very best...... Knock the door of success......

1. 
   The  __________ layer is responsible for moving frames form one node to the next.
   
   
   
   
   1.  physical
   
   
   2.  data link
   
   
   3.  session
   
   
   4.  transport 
   
   
   
   
   
   
   
   
   


2. 
   Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size? 
   
   
   
   
   1.  10
   
   
   2.  15
   
   
   3.  32
   
   
   4.  64
   
   
   
   
   
   
   
   
   


3. 
   Which one of the following is NOT true for a computer virus? 
   
   
   
   
   1.  another standalone computer in the vicinity of the virus affected computer may be contracted with virus
   
   
   2.  computer virus is a software
   
   
   3.  pen drives can contract with virus 
   
   
   4.  computer virus can be contracted via internet
   
   
   
   
   
   
   
   
   


4. 
   When the packets are small and all of the same size, they are often called _______ .
   
   
   
   
   1.  Circuit switched
   
   
   2.  Virtual circuit
   
   
   3.  Packet switched 
   
   
   4.  Cells
   
   
   
   
   
   
   
   
   


5. 
   Which of the following is not the layer of TCP/IP protocol?
   
   
   
   
   1.  Application Layer 
   
   
   2.  Transport Layer 
   
   
   3.  Internetwork layer
   
   
   4.  Session Layer
   
   
   
   
   
   
   
   
   


6. 
   Which of the following statement is true?
   
   i) An address with all bits 1 is interpreted as all networks or all hosts.
   
   ii) The class A network 128.0.0.0 is defined as the loopback network.
   
   
   
   
   1.  ii only
   
   
   2.  i only
   
   
   3.  both a & b
   
   
   4.  none of the above
   
   
   
   
   
   
   
   
   


7. 
   Circuit switching takes place at the _______ layer.
   
   
   
   
   1.  Physical 
   
   
   2.  Network 
   
   
   3.  Data link
   
   
   4.  Transport
   
   
   
   
   
   
   
   
   


8. 
   Which one of the following uses the greatest number of layers in the OSI model? 
   
   
   
   
   1.  Repeater 
   
   
   2.  Router  
   
   
   3.  Bridge 
   
   
   4.  Gateway 
   
   
   
   
   
   
   
   
   


9. 
   A digital signature is  ___________.
   
   
   
   
   1.  a unique identification of a sender
   
   
   2.  a bit string giving identity of a correspondent
   
   
   3.  an authentication of an electronic record by tying it uniquely to a key only a sender can posses 
   
   
   4.  an encrypted signature of sender 
   
   
   
   
   
   
   
   
   


10. 
    The number of oscillations per second of a wave is called its _______ .
    
    
    
    
    1.  Frequency
    
    
    2.  Spectrum
    
    
    3.  Wavelength
    
    
    4.  Sequence
    
    
    
    
    
    
    
    
    

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