NS001Number System • Base
Most ImportantEasy
Q1.The base (radix) of the binary number system is:
A
2
Correct answer
B
8
C
10
D
16
Answer Green MarksON
Correct answers are highlighted in green
NS002Number System • Base
Most ImportantEasy
Q2.The base (radix) of the hexadecimal number system is:
A
8
B
10
C
16
Correct answer
D
2
NS007Number System • Dec to Bin
Most ImportantMedium
Q3.The binary equivalent of the decimal number (25) is:
A
10101
B
11001
Correct answer
C
11011
D
10011
NS008Number System • Dec to Bin
Most ImportantMedium
Q4.The binary equivalent of the decimal number (45) is:
A
101101
Correct answer
B
110101
C
100101
D
101011
NS010Number System • Bin to Dec
Most ImportantMedium
Q5.The decimal equivalent of the binary number (1101) is:
A
11
B
13
Correct answer
C
15
D
12
NS014Number System • Oct to Dec
Most ImportantMedium
Q6.The decimal equivalent of the octal number (22) is:
A
20
B
18
Correct answer
C
14
D
16
NS016Number System • Dec to Hex
Most ImportantMedium
Q7.The hexadecimal equivalent of the decimal number (255) is:
A
FF
Correct answer
B
EE
C
F0
D
100
NS017Number System • Hex to Dec
Most ImportantMedium
Q8.The decimal equivalent of the hexadecimal number (1A) is:
A
16
B
26
Correct answer
C
24
D
20
NS022Number System • 1's complement
Most ImportantMedium
Q9.The 1's complement of the binary number (1010) is:
A
0101
Correct answer
B
1010
C
0110
D
1101
NS023Number System • 2's complement
Most ImportantMedium
Q10.The 2's complement of the binary number (1010) is:
A
0101
B
0110
Correct answer
C
1011
D
1001
NS024Number System • 2's complement
Most ImportantMedium
Q11.The 2's complement of the binary number (0110) is:
A
1010
Correct answer
B
1001
C
0111
D
1000
NS026Number System • BCD
Most ImportantMedium
Q12.The BCD (8-4-2-1) representation of the decimal number (9) is:
A
1001
Correct answer
B
1010
C
0110
D
1000
NS003Number System • Base
ImportantEasy
Q13.The base of the octal number system is:
A
2
B
8
Correct answer
C
10
D
16
NS004Number System • Digits
ImportantEasy
Q14.The largest single digit in the octal number system is:
A
7
Correct answer
B
8
C
9
D
F
NS005Number System • Hex digits
ImportantMedium
Q15.In hexadecimal, the letter A represents which decimal value?
A
1
B
10
Correct answer
C
11
D
15
NS006Number System • Hex digits
ImportantMedium
Q16.In hexadecimal, the letter F represents which decimal value?
A
16
B
14
C
15
Correct answer
D
10
NS009Number System • Dec to Bin
ImportantMedium
Q17.The binary equivalent of the decimal number (156) is:
A
10010100
B
10011100
Correct answer
C
11001100
D
10101100
NS011Number System • Bin to Dec
ImportantMedium
Q18.The decimal equivalent of the binary number (10110) is:
A
26
B
20
C
22
Correct answer
D
24
NS012Number System • Bin to Dec
ImportantEasy
Q19.The decimal value of the binary number (11111111) is:
A
128
B
256
C
255
Correct answer
D
254
NS013Number System • Dec to Oct
ImportantMedium
Q20.The octal equivalent of the decimal number (25) is:
A
31
Correct answer
B
25
C
32
D
17
NS015Number System • Oct to Dec
ImportantMedium
Q21.The decimal equivalent of the octal number (17) is:
A
17
B
14
C
15
Correct answer
D
23
NS018Number System • Hex to Dec
ImportantMedium
Q22.The decimal equivalent of the hexadecimal number (2AF) is:
A
675
B
700
C
687
Correct answer
D
512
NS019Number System • Bin to Oct
ImportantHard
Q23.The octal equivalent of the binary number (110101) is:
A
65
Correct answer
B
56
C
72
D
45
NS020Number System • Bin to Hex
ImportantHard
Q24.The hexadecimal equivalent of the binary number (11010110) is:
A
C6
B
D6
Correct answer
C
D5
D
E6
NS021Number System • Hex to Bin
ImportantHard
Q25.The binary equivalent of the hexadecimal number (7C) is:
A
10111100
B
1111100
Correct answer
C
11101100
D
01110011
NS025Number System • 2's complement
ImportantMedium
Q26.The 2's complement of a binary number is obtained by:
A
flipping all the bits
B
adding 1 to the 1's complement
Correct answer
C
subtracting 1 from the number
D
reversing the digit order
NS027Number System • BCD
ImportantHard
Q27.The BCD representation of the decimal number (12) is:
A
1100
B
0001 0010
Correct answer
C
00011000
D
0001 0100
NS028Number System • Excess-3
ImportantHard
Q28.The Excess-3 code of the decimal digit (5) is:
A
1000
Correct answer
B
0101
C
0011
D
0110
NS029Number System • Excess-3
ImportantHard
Q29.The Excess-3 code of the decimal digit (0) is:
A
0000
B
0011
Correct answer
C
1000
D
0111
NS030Number System • Grey code
ImportantHard
Q30.The Grey code equivalent of the binary number (100) is:
A
110
Correct answer
B
101
C
011
D
100
NS031Number System • Grey code
ImportantHard
Q31.The Grey code equivalent of the binary number (1010) is:
A
1100
B
1111
Correct answer
C
1001
D
1010
NS032Number System • Weighted code
ImportantMedium
Q32.Which of the following is a WEIGHTED code?
A
Grey code
B
Excess-3 code
C
BCD (8-4-2-1)
Correct answer
D
ASCII
NS033Number System • Non-weighted code
ImportantMedium
Q33.Which of the following is a NON-WEIGHTED code?
A
BCD
B
8-4-2-1 code
C
Grey code
Correct answer
D
Binary
NS034Number System • Encoding
ImportantEasy
Q34.The ASCII value of the character 'A' is:
A
60
B
65
Correct answer
C
97
D
48
NS035Number System • Encoding
ImportantMedium
Q35.The ASCII value of the character 'a' (small a) is:
A
65
B
90
C
97
Correct answer
D
61
NS037Number System • Encoding
ImportantMedium
Q36.ISCII coding scheme is mainly used for representing:
A
Chinese scripts
B
Indian language scripts
Correct answer
C
mathematical symbols
D
images
NS038Number System • Encoding
ImportantMedium
Q37.Which coding scheme can represent characters of almost all the world's languages?
A
ASCII
B
BCD
C
Unicode
Correct answer
D
Grey code
NS036Number System • Encoding
OtherMedium
Q38.The ASCII value of the digit character '0' (zero) is:
A
0
B
30
C
48
Correct answer
D
58
NS039Number System • Encoding
OtherMedium
Q39.Which of the following is NOT a valid character encoding scheme?
A
ASCII
B
Unicode
C
UTF-34
Correct answer
D
ISCII