Computer Architecture Set 12

Computer Science Engineering (CSE)

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This set of Computer Architecture Multiple Choice Questions & Answers (MCQs) focuses on Computer Architecture Set 12

Q1 | Locations in the device to or from which data transfers can take place is called                   
  • end points
  • hosts
  • source
  • none of the mentioned
Answer: end points
Explaination:
none.
Q2 | A USB pipe is a               channel.
  • simplex
  • half-duplex
  • full-duplex
  • both simplex and full-duplex
Answer: full-duplex
Explaination:
this means that the pipe is bi-directional in sending messages or information.
Q3 | The type/s of packets sent by the USB is/are                 
  • data
  • address
  • control
  • both data and control
Answer: both data and control
Explaination:
this means that the usb gets both data and control signals required for the transfer operation.
Q4 | The first field of any packet is            
  • pid
  • addr
  • endp
  • crc16
Answer: pid
Explaination:
the pid is the field that is used to identify the device (the device id).
Q5 | The 4 bit PID’s are transmitted twice.
  • true
  • false
Answer: true
Explaination:
the fields are transmitted twice, once with the true values and the second time with the complemented values.
Q6 | The last field in the packet is               
  • pid
  • addr
  • endp
  • crc
Answer: crc
Explaination:
the last 5 bits of the packet is used for error checking, that is cyclic redundancy check.
Q7 | The CRC bits are computed based on the values of the            
  • pid
  • addr
  • endp
  • both addr and endp
Answer: both addr and endp
Explaination:
the crc bits are calculated based on the values of the address and endp.
Q8 | The data packets can contain data upto               
  • 512 bytes
  • 256 bytes
  • 1024 bytes
  • 2 kb
Answer: 1024 bytes
Explaination:
none.
Q9 | The            signal is used to indicate the beginning of a new frame.
  • start
  • sof
  • beg
  • none of the mentioned
Answer: sof
Explaination:
the sof(state of frame) is used to indicate the beginning of a new frame.
Q10 | The SOF is transmitted every               
  • 1s
  • 5s
  • 1ms
  • 1us
Answer: 1ms
Explaination:
none.
Q11 | The logic operations are simpler to implement using logic circuits.
  • true
  • false
Answer: true
Explaination:
the logic operation includes and, or, xor etc.
Q12 | The logic operations are implemented using                 circuits.
  • bridge
  • logical
  • combinatorial
  • gate
Answer: combinatorial
Explaination:
the combinatorial circuits means, using the basic universal gates.
Q13 | In full adders the sum circuit is implemented using                   
  • and & or gates
  • nand gate
  • xor
  • xnor
Answer: xor
Explaination:
sum = a ^ b ^ c (‘^’ indicates xor operation).
Q14 | The usual implementation of the carry circuit involves                     
  • and & or gates
  • xor
  • nand
  • xnor
Answer: xor
Explaination:
in case of full and half adders this method is used.
Q15 | A                 gate is used to detect the occurrence of an overflow.
  • nand
  • xor
  • xnor
  • and
Answer: xor
Explaination:
the overflow is detected by cn^cn-1 (‘^’ indicates xor operation).
Q16 | The delay reduced to in the carry look ahead adder is                       
  • 5
  • 8
  • 10
  • 2n
Answer: 5
Explaination:
none.
Q17 | The product of 1101 & 1011 is               
  • 10001111
  • 10101010
  • 11110000
  • 11001100
Answer: 10001111
Explaination:
the above operation is performed using binary multiplication.
Q18 | The               is used to coordinate the operation of the multiplier.
  • controller
  • coordinator
  • control sequencer
  • none of the mentioned
Answer: control sequencer
Explaination:
this performs the required sequencing of the various parts of the circuit.
Q19 | The multiplicand and the control signals are passed through to the n-bit adder via            
  • mux
  • demux
  • encoder
  • decoder
Answer: mux
Explaination:
none.
Q20 | The method used to reduce the maximum number of summands by half is                 
  • fast multiplication
  • bit-pair recording
  • quick multiplication
  • none of the mentioned
Answer: bit-pair recording
Explaination:
it reduces the number of summands by concatenating them.
Q21 | The multiplier -6(11010) is recorded as                 
  • 0-1-2
  • 0-1+1-10
  • -2-10
  • none of the mentioned
Answer: 0-1-2
Explaination:
none.
Q22 | CSA stands for?
  • computer speed addition
  • carry save addition
  • computer service architecture
  • none of the mentioned
Answer: computer speed addition
Explaination:
the csa is used to speed up the addition of multiplicands.
Q23 | The decimal numbers represented in the computer are called as floating point numbers, as the decimal point floats through the number.
  • true
  • false
Answer: true
Explaination:
by doing this the computer is capable of accommodating the large float numbers also.
Q24 | The numbers written to the power of 10 in the representation of decimal numbers are called as            
  • height factors
  • size factors
  • scale factors
  • none of the mentioned
Answer: scale factors
Explaination:
these are called as scale factors cause they’re responsible in determining the degree of specification of a number.
Q25 | If the decimal point is placed to the right of the first significant digit, then the number is called                   
  • orthogonal
  • normalized
  • determinate
  • none of the mentioned
Answer: normalized
Explaination:
none.
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