Multiple Choice Question

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12.THE PHYSICAL LAYERS IN REFERENCE TO THE OSI MODEL DEFINES

  1. DATA LINK PROCEDURES THAT PROVIDES FOR THE EXCHANGE OF DATA VIA FRAMES THAT CAN BE SENT AND RECEIVED
  2. THE INTERFACE BETWEEN X. 25 NETWORK AND PACKET MODE DEVICE
  3. THE VIRTUAL INTERFACE TO PACKET SWITCHED SERVICES
  4. ALL OF THE ABOVE

13. IN FIBER OPTICS THE SOURCE OF SIGNAL IS

  1. INFRARED WAVE
  2. RADIO WAVE
  3. LIGHT WAVE
  4. VERY LOW FREQUENCY WAVE

14. VIRTUAL TERMINAL(TELNET)

  1. MAPS HOST NAME ONTO THEIR NETWORK ADDRESSES
  2. ALLOW USER ON ONE MACHINE TO LOG ONTO A DISTANT MACHINE
  3. MOVES NEWS ARTICLES AROUND
  4. FETCH PAGES ON WORLD WIDE WEB

15. WHICH OUT OF FOLLOWING IS NOT THE PRINCIPLE OF ISDN

  1. SUPPORT OF VOICE AND NON-VOICES APPLICATIONS
  2. SUPPORT OF SWITCHED AND NON-SWITCHED APPLICATION
  3. INTELLIGENCE  IN THE NETWORK
  4. LIMITED CONFIGURATION

16.  WHICH OF THE FOLLOWING IS NOT A PROPERLY OF FIBER OPTIC CABLING?

  1. EASIER TO CAPTURE A SIGNAL THAN COPPER CABLING
  2. TRANSMIT AT FASTER SPEEDS THAN COPPER CABLING
  3. VERY RESISTANCE TO INTERFACE
  4. CARRIES SIGNAL AS LIGHT WAVES

17. LAYERED PROTOCOL OFFERS FOLLOWING ADVANTAGES:

  1. IT BREAKS THE DESIGN PROBLEM INTO MORE MANAGEABLE AND SMALLER PIECES
  2. IT ALLOWS PROTOCOLS TO BE CHANGED WITHOUT AFFECTING HIGHER OR LOWER ONES
  3. BOTH (A) AND (B)
  4. NONE OF THE ABOVE

18. WHAT IS THE MINIMUM NUMBER OF WIRES, NEEDED TO SEND DATA OVER A SERIAL COMMUNICATION LINK LAYER?

  1.  1
  2.  3
  3.  2
  4.  4

19. WHICH DATA COMMUNICATION METHOD IS USED TO SEND DATA OVER A SERIAL COMMUNICATION LINK?

  1. SIMPLEX
  2. HALF DUPLEX
  3. FULL DUPLEX
  4. ALL OF THE ABOVE

20. WHAT IS THE MAIN DIFFERENCE BETWEEN SYNCHRONOUS AND ASYNCHRONOUS TRANSMISSION?

  1. THE BANDWIDTH REQUIRED IS DIFFERENT
  2. THE PULSE  HEIGHT IS DIFFERENT
  3. THE CLOCKING IS DERIVED FROM THE DATA IN SYNCHRONOUS TRANSMISSION
  4. THE CLOCKING IS MIXED WITH DATA IN ASYNCHRONOUS TRANSMISSION

21. THE PURPOSE OF PREAMBLE IS AN ETHERNET IS

  1. ERROR CHECKING
  2. COLLISION AVIDANCE
  3. CLOCK SYNCHRONIZATION
  4. BROADCAST

22. IN OSI NETWORK ARCHITECTURE, THE ROUTING IS PERFORMED BY

  1. TRANSPORT LAYER
  2. NETWORK LAYER
  3. DATA LINK LAYER
  4. SESSION LAYER

23. WHICH OF THE FOLLOWING IS AN EXAMPLE OF BOUNDED MEDIUM?

  1. COAXIAL CABLE
  2. FIBER OPTIC CABLE
  3. WAVEGUIDE
  4. ALL OF THE ABOVE

24. WAVELENGTH DIVISION MULTIPLEXING IS USED IN

  1. COAXIAL CABLE
  2. FIBER OPTIC CHANNELS
  3. MICROWAVE TRANSMISSION
  4. SATELLITE COMMUNICATION

25. THE SLOWEST TRANSMISSION SPEEDS ARE THOSE OF

  1. MICROWAVES
  2. FIBER OPTIC CABLE
  3. COAXIAL CABLE
  4. TWISTED PAIR WAVE

26. THE DIFFERENCE BETWEEN A MULTIPLEXER AND A STATISTICAL MULTIPLEXER IS:

  1. MULTIPLEXER USE TDM (TIME DIVISION MULTIPLEXER), WHILE STATISTICAL MULTIPLEXER USES FDM (FREQUENCY DIVISION MULTIPLEXER)
  2. MULTIPLEXERS OFTEN WASTE THE OUTPUT LINK CAPACITY WHILE STATISTICAL MULTIPLEXERS OPTIMIZE ITS USER
  3. MULTIPLEXER USE THE 25 PROTOCOL, WHILE STATISTICAL MULTIPLEXERS OPTIMIZE ITS USER
  4. STATISTICAL MULTIPLEXER NEED BUFFERS WHILE MULTIPLEXERS DO NOT NEED BUFFERS

27. END-TO-END CONNECTIVITY IS PROVIDED FROM HOST TO HOST IN

  1. THE TRANSPORT LAYER
  2. THE NETWORK LAYERS
  3. THE SESSION LAYERS
  4. IT IS COMBINED FUNCTIONALLY OF THE NETWORK AND THE DATA LINK LAYER.

28. THE INTERNET CONTROL MESSAGE PROTOCOL(ICMP)

  1. ALLOWS GATEWAYS TO SEND ERROR AND CONTROL MESSAGES TO OTHER GATEWAYS OR HOSTS.
  2. PROVIDES COMMUNICATION BETWEEN THE INTERNET PROTOCOL SOFTWARE ON ONE MACHINE AND THE INTERNET PROTOCOL SOFTWARE ON ANOTHER
  3. ONLY REPORTS ERROR CONDITIONS TO THE ORIGINAL SOURCE, THE SOURCE MUST RELATE ERRORS TO INDIVIDUAL APPLICATIONS PROGRAMS AND TAKE ACTION TO CORRECT THE PROBLEM
  4. ALL OF THE ABOVE

29. WORKING OF THE WAN GENERALLY INVOLVES:

  1. TELEPHONE LINES
  2. SATELLITES
  3. MICROWAVES
  4. ALL OF THE ABOVE

ANSWERS

4,1,2,4,1,3,2,3,3,3,2,4,2,4,4,1,4,4

 

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