Computer Science Mock Test UGC-NET (Paper II & III- Computer Networks) - Part 24

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 adds a header to the packet coming from the upper layer that includes the logical address of the sender and receiver.
   
   
   
   
   1.  data link 
   
   
   2.  transport
   
   
   3.  network
   
   
   4.  physical 
   
   
   
   
   
   
   
   
   


2. 
   Which protocol is used for sending email on the internet? 
   
   
   
   
   1.  SMPP
   
   
   2.  SMTP 
   
   
   3.  SNMP 
   
   
   4.  FTP 
   
   
   
   
   
   
   
   
   


3. 
   127.0.0.1 is a  __________.
   
   
   
   
   1.  loop-back address 
   
   
   2.  limited broadcast address 
   
   
   3.  direct broadcast address 
   
   
   4.  multicast address 
   
   
   
   
   
   
   
   
   


4. 
   Station A uses 32 byte packets to transmit messages to Station B using a sliding window protocol. The round trip delay between A and B is 80 milliseconds and the bottleneck bandwidth on the path between A and B is 128 kbps. What is the optimal window size that A should use?
   
   
   
   
   1.  50
   
   
   2.  120
   
   
   3.  300
   
   
   4.  40
   
   
   
   
   
   
   
   
   


5. 
   The Last address of IP address represents _______ .
   
   
   
   
   1.  Broadcast address
   
   
   2.  Network address
   
   
   3.  Unicast address 
   
   
   4.  Destination address
   
   
   
   
   
   
   
   
   


6. 
   How many bits are there in the Ethernet address?
   
   
   
   
   1.  32 bits
   
   
   2.  48 bits
   
   
   3.  96 bits
   
   
   4.  8 bits
   
   
   
   
   
   
   
   
   


7. 
   Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface?
   
   1. show version
   
   2. show protocols
   
   3. show interfaces
   
   4. show controllers
   
   5. show ip interface
   
   
   
   
   1.  2, 3 and 5
   
   
   2.  1, 2 and 4
   
   
   3.  3 and 4 only
   
   
   4.  1 and 4 only
   
   
   
   
   
   
   
   
   


8. 
   Which of the transport layer protocols is connection-less?
   
   
   
   
   1.  TCP
   
   
   2.  Nvt
   
   
   3.  UDP 
   
   
   4.  FTP
   
   
   
   
   
   
   
   
   


9. 
   What is the use of Bridge in Networks?
   
   
   
   
   1.  to connect LANs
   
   
   2.  to Control Network Speed
   
   
   3.  to separate LANs
   
   
   4.  All of the above.
   
   
   
   
   
   
   
   
   


10. 
    ADSL is the abbreviation of _______ .
    
    
    
    
    1.  Assymetric Dual Subscriber Line
    
    
    2.  Asynchronous Dual System Line
    
    
    3.  Asynchronous Digital System Line
    
    
    4.  Assymetric Digital Subscriber Line
    
    
    
    
    
    
    
    
    

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