Computer Science Mock Test UGC-NET (Paper II & III- Computer Networks) - Part 23

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 routing processor of a router performs the__________layer functions of the router.
   
   
   
   
   1.  session
   
   
   2.  transport
   
   
   3.  physical and data link 
   
   
   4.  network
   
   
   
   
   
   
   
   
   


2. 
   Local area network can transmit __________.
   
   
   
   
   1.  slower than telecommunications over public telephone lines
   
   
   2.  faster than telecommunications over public telephone lines
   
   
   3.  using twisted pair wiring on coaxial cables
   
   
   4.  both a and c 
   
   
   
   
   
   
   
   
   


3. 
   In a token ring network the transmission speed is 10^7 bps and the propagation speed is 200 metres/micro second. The 1-bit delay in this network is equivalent to_________.
   
   
   
   
   1.  50 metres of cable
   
   
   2.  200 metres of cable
   
   
   3.  20 metres of cable
   
   
   4.  500 metres of cable
   
   
   
   
   
   
   
   
   


4. 
   What is the maximum size of data that the application layer can pass on to the TCP layer below?
   
   
   
   
   1.  2^16 bytes-size of TCP header 
   
   
   2.  Any size
   
   
   3.  1500 bytes
   
   
   4.  2^16 bytes
   
   
   
   
   
   
   
   
   


5. 
   _______ provides a connection-oriented reliable service for sending messages.
   
   
   
   
   1.  TCP/IP
   
   
   2.  IP
   
   
   3.  UDP
   
   
   4.  TCP
   
   
   
   
   
   
   
   
   


6. 
   DNS can obtain the _________of host if its domain name is known and vice versa.
   
   
   
   
   1.  Checksum
   
   
   2.  IP address
   
   
   3.  Port address 
   
   
   4.  Station address
   
   
   
   
   
   
   
   
   


7. 
   In a _______topology, if there are n devices in a network, each device has n-1 ports for cables.
   
   
   
   
   1.  Mesh   
   
   
   2.  Ring
   
   
   3.  Star 
   
   
   4.  Bus
   
   
   
   
   
   
   
   
   


8. 
   What is the default subnet mask for a class C network?
   
   
   
   
   1.  255.0.0.0
   
   
   2.  127.0.0.1
   
   
   3.  255.255.0.0
   
   
   4.  255.255.255.0
   
   
   
   
   
   
   
   
   


9. 
   What are the most commonly used transmission speeds in BPS used in data communication?
   
   
   
   
   1.  9600
   
   
   2.  6000
   
   
   3.  1200
   
   
   4.  3654
   
   
   
   
   
   
   
   
   


10. 
    What is Firewalls in Computer Network?
    
    
    
    
    1.  An Operating System of Computer Network
    
    
    2.  The Physical Boundary of Network
    
    
    3.  both a & b
    
    
    4.  A system designed to block unauthorized access
    
    
    
    
    
    
    
    
    

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