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Computer Organization and Architecture (COA) Objective Question Bank-Unit-3
1.The addition and subtraction operations can be combined into one common circuit by including _________________ with each full-adder.
A . Ex-OR
B . NOR
C . Ex-NOR
D . NAND
2.The 2`s complement of 1101100 is
A . 0010011
B . 0010100
C . 1100011
D . 0010110
3.The first part represents a signed, fixed-point number called the
A . Signed
B . Magnitude
C . Exponent
D . Mantissa
4.The string of digits 101101 convert into decimal number
A . 43
B . 47
C . 45
D . 41
5.Convert the 237 of octal number into Hexadecimal number
A . 0F9
B . 09E
C . 09F
D . 08F
6.The sign followed by the string of digits is called as ______
A . Significant
B . Determinant
C . Mantissa
D . Exponent
7.Which method/s of representation of numbers occupies large amount of memory than others ?
A . Sign-magnitude
B . 1’s compliment
C . 2’s compliment
D . 1’s & 2’s compliment
8.Which representation is most efficient to perform arithmetic operations on the numbers ?
A . Sign-magnitude
B . 1’s compliment
C . 2’S compliment
D . None of the mentioned
9.Which method of representation has two representations for ‘0’ ?
A . Sign-magnitude
B . 1’s compliment
C . 2’s compliment
D . None of the mentioned
10..When we perform subtraction on -7 and 1 the answer in 2’s compliment form is _________
A . 1010
B . 1110
C . 0110
D . 1000
11..Add the two BCD numbers: 1001 + 0100 = ?
A . 10101111
B . 01010000
C . 00010011
D . 00101011
12..Carry out BCD subtraction for (68) – (61) using 10’s complement method.
A . 00000111
B . 01110000
C . 100000111
D . 011111000
13..Code is a symbolic representation of __________ information.
A . Continuous
B . Discrete
C . Analog
D . Both continuous and discrete
14..When numbers, letters or words are represented by a special group of symbols, this process is called __________
A . Decoding
B . Encoding
C . Digitizing
D . Inverting
15..A three digit decimal number requires ________ for representation in the conventional BCD format.
A . 3 bits
B . 6 bits
C . 12 bits
D . 24 bits
16..A group of bits used to represent a symbol is called a ____________
A . byte
B . memory
C . nibble
D . code
17..Which of the following is not a type of computer code?
A . EBCDIC
B . BCD
C . ASCII
D . EDIC
18..The 9’s complement of 45 is _____________
A . 45
B . 54
C . 64
D . 46
19..Perform BCD addition of (23)BCD + (20)BCD .
A . 00110100
B . 01000011
C . 10011
D . 11100
20..The Excess-3 representation of (0100)BCD is __________
A . 0110
B . 1110
C . 0111
D . 1100
21..When we perform subtraction on -7 and -5 the answer in 2’s compliment form is ________
A . 11110
B . 1110
C . 1010
D . 0010
22..When we subtract -3 from 2 , the answer in 2’s compliment form is _________
A . 0001
B . 1101
C . 0101
D . 1001
23..When 1101 is used to divide 100010010 the remainder is ______
A . 101
B . 11
C . 0
D . 1
24..Binary coded decimal is a combination of __________
A . Two binary digits
B . Three binary digits
C . Four binary digits
D . Five binary digits
25..The decimal number 10 is represented in its BCD form as __________
A . 10100000
B . 01010111
C . 00010000
D . 00101011
Relevant Materials :
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-1 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-2 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-3 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-4 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-5 - [ COA ]
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