Multiple Choice Question

Multiple Choice Question Bank for Computer Engineer Part IV

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41.  WHICH OF THE FOLLOWING IS ASYNCHRONOUS PROTOCOLS?

A. BLASST

B. SDLC

C. HDLC

D. LAN



  1. IN A NETWORK WITH 50 COMPUTER, A MESH TOPOLOGY WOULD REQUIRE……. CABLES

A. 1225 CBALES

B. 50 CABLES

C. 1280 CABLES

D. 99 CABLES

 

  1. A VOICE GRADE TELEPHONE LINE CARRIES CONTINUE ELECTROMAGNETIC SIGNAL RANGING BETWEEN 300HZ AND 3300 HZ. WHAT WILL BE THE WAVELENGTH OF 15000 HZ TRAVELLING THROUGH A COPPER WIRE?

A. 333.33M

B. 13333.33M

C. 13.33M

D.333.33M



  1. THE SIGN CORPORATION OF ABC HAS A FULLY CONNECTED MESH NETWORK CONSISTING OF NINETY NINE DEVICES. CALCULATE THE NUMBER OF PORTS FOR EACH DEVICES

A. 95

B. 100

C. 80

D. 98



  1. THE SHIMLA CORPORATE OF INDIA HAS A FULLY CONNECTED MESH NETWORK CONSISTING OF NINE DEVICES. CALCULATE THE TOTAL NUMBER OF CABLE LINKS NEEDED

A. 36

B. 20

C. 45

D. 25

 

  1. MAXIMUM DATA RATE OF CHANNEL OF 3000 HZ BANDWIDTH AND S/N RATIO OF 30DB IS:

A. 30000 BPS

B. 75000 BPS

C. 60000 BPS

D. 3000 BPS



  1. THE NUMBER OF CROSS POINTS SWITCH, WHICH IS FULL DUPLEX IN NATURE AND THERE ARE NO SELF-CONNECTION IS

A. 100

B. 45

C. 50

D. 90

 

  1. A TERMINAL MULTIPLEXER HAS SIX 1200 BPS TERMINALS AND ‘N’ 300 BPS CONNECTED TO IT. THE OUTGOING LINE IS 9600 BPS. WHAT IS THE MAXIMUM VALUE OF N?

A. 4

B. 16

C. 8

D. 28

 

  1. CHARACTER PER SECOND (7 BITS + 1 PARITY) WHICH CAN BE TRANSMITTED OVER A 24000BPS LINE, IF THE TRANSFER IS SYNCHRONOUS (1 START AND 1 STOP BIT)

A. 275

B. 250

C. 240

D. 300

 

  1. SUPPOSE BSNL TELEPHONE LINE HAS BANDWIDTH OF 6100 HZ. THE SIGNAL TO NOISE RATIO IS 40 DB. THEN THE CAPACITY OF CHANNEL WOULD BE:

A. 80,176 BPS

B. 32,681 BPS

C. 38,821 BPS

D. 81,056 BPS

 

  1. WHEN A SIGNAL TRAVELS THROUGH A TRANSMISSION MEDIUM, ITS POWER BECOMES 100 TIMES. THEN GAIN/LOSS WOULD BE:

A. GAIN OF 80 DB

B. GAIN OF 20 DB

C. LOSS OF 80 DB

D. LOSS OF 20 DB

 

  1. CONSIDER A SIGNAL IS MEASURED AT TWO DIFFERENT POINTS. THE POWER IS P1 AT THE FIRST POINT AND P2 AT THE SECOND POINT. IF DB IS 0, THEN:

A. P2 IS ZERO

B. P2 IS MUCH LARGER THAN P1

C. P2 EQUAL TO P1

D. P2 IS MUCH SMALLER THAN P1



  1. FOR A PARTICULAR CHANNEL, THE BANDWIDTH IS 7200 HZ. SIGNAL STRENGTH IS OF 12 MICRO WATT AND ONE SIDED POWER SPECTRUM DENSITY OF WHITE NOISE IS 10^-12 WATT/HZ. THE CHANNEL CAPACITY WOULD BE:

A. 29.83 KBPS

B.  32.22 KBPS

C. 77 KBPS

D. 69 KBPS

 

ANSWERS 

A,A,B,D,A,A,B,C,D,D,B,C,C

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