100+ Most Probable Number System Interview Asking Mcqs Question with_PDF Set-1 ___Number System

Multiple Choice Questions (Number System)

Set-1

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1.	Convert hexadecimal value 16 to decimal.
	A. 2210 B. 1610 C. 1010 D. 2010
2.	Convert the following decimal number to 8-bit binary -187
	A. 101110112 B. 110111012 C. 101111012 D. 101111002
3.	Convert binary 111111110010 to hexadecimal.
	A. EE216 B. FF216 C. 2FE16 D. FD216
4.	Convert the following binary number to decimal. 010112
	A. 11 B. 35 C. 15 D. 10
5.	Convert the binary number 1001.00102 to decimal.
	A. 90.125 B. 9.125 C. 125 D. 12.5
6.	Decode the following ASCII message. 10100111010100101010110001001011001 01000001001000100000110100101000100
	A. STUDYHARD B. STUDY HARD C. Stydyhard D. study hard
7.	The voltages in digital electronics are continuously variable.
	A. True B. False
8.	One hex digit is sometimes referred to as :
	A. Byte B. Nibble C. Grouping D. Instruction
9.	Which of the following is the most widely used alphanumeric code for computer input and output?
	A. Gray B. ASCII C. Parity D. EBCDIC
10.		If a typical PC uses a 20-bit address code, how much memory can the CPU address?
		A. 20 MB B. 10 MB C. 1 MB D. 580 MB
11.		Convert 59.7210 to BCD.
		A. 111011 B. 01011001.01110010 C. 1110.11 D. 0101100101110010
12.		Convert 8B3F16 to binary.
		A. 35647 B. 011010 C. 1011001111100011 D. 1000101100111111
13.		Which is typically the longest: bit, byte, nibble, word?
		A. Bit B. Byte C. Nibble D. Word
14.		Assign the proper odd parity bit to the code 111001.
		A. 1111011 B. 1111001 C. 0111111 D. 0011111
15.		Convert decimal 64 to binary.
		A. 01010010 B. 01000000 C. 00110110 D. 01001000
16.		Convert hexadecimal value C1 to binary.
		A. 11000001 B. 1000111 C. 111000100 D. 111000001
17.		Convert the following octal number to decimal. 178
		A. 51 B. 82 C. 57 D. 15
18.		Convert the following binary number to octal. 0101111002
		A. 1728 B. 2728 C. 1748 D. 2748
19.		How many binary digits are required to count to 10010?
		A. 7 B. 2 C. 3 D. 100
20.		The BCD number for decimal 347 is ________.
		A. 1100 1011 1000 B. 0011 0100 0111 C. 0011 0100 0001 D. 1100 1011 0110
21.		The binary number for octal 458 is ________.
		A. 100010 B. 100101 C. 110101 D. 100100
22.		The sum of 11101 + 10111 equals ________.
		A. 110011 B. 100001 C. 110100 D. 100100
23.		Convert the following binary number to decimal. 100110102
		A. 154 B. 155 C. 153 D. 157
24.		The decimal number 188 is equal to the binary number ________.
		A. 10111100 B. 0111000 C. 1100011 D. 1111000
25.		Convert the following binary number to octal. 0011010112
		A. 1538 B. 3518 C. 2538 D. 3528
26.		How many bits are in an ASCII character?
		A. 16 B. 8 C. 7 D. 4
27.		A binary number's value changes most drastically when the ________ is changed.
		A. MSB B. Frequency C. LSB D. duty cycle
28.		Convert decimal 213 to binary.
		A. 11001101 B. 11010101 C. 01111001 D. 11100011
29.		The decimal number for octal 748 is ________.
		A. 74 B. 60 C. 22 D. 62
30.		The sum of the two BCD numbers, 0011 + 0011, is ________.
		A. 0110 B. 0111 C. 0011 D. 1100
31.		Convert binary 01001110 to decimal.
		A. 4E B. 78 C. 76 D. 116
32.		Which is not a word size?
		A. 64 B. 28 C. 16 D. 8
33.		The octal numbering system:
		A. simplifies tasks B. groups binary numbers in groups of 4 C. saves time D. simplifies tasks and saves time
34.		The binary number 1110 is equal to the decimal number ________.
		A. 3 B. 1 C. 7 D. 14
35.		Convert the following octal number to binary. 768
		A. 1101112 B. 1111102 C. 1111002 D. 1001112
36.		Convert 11001010001101012 to hexadecimal.
		A. 121035 B. CA35 C. 53AC1 D. 530121
37.		Convert the following decimal number to octal. 281
		A. 1348 B. 4318 C. 3318 D. 1338
38.		When using even parity, where is the parity bit placed?
		A. Before the MSB B. After the LSB C. In the parity word D. After the odd parity bit
39.		Convert the following octal number to decimal. 358
		A. 71 B. 17 C. 92 D. 29
40.		Convert binary 11001111 to hexadecimal.
		A. 8F16 B. CE16 C. DF16 D. CF16
41.		Convert 17318 to decimal.
		A. 216.4 B. 985 C. 3D9 D. 1123
42.		An analog signal has a range from 0 V to 5 V. What is the total number of analog possibilities within this range?
		A. 5 B. 50 C. 250 D. Infinite
43.		Hexadecimal letters A through F are used for decimal equivalent values from:
		A. 1 through 6 B. 9 through 14 C. 10 through 15 D. 11 through 17
44.		Convert the following decimal number to 8-bit binary. 35
		A. 000100102 B. 000100112 C. 001000112 D. 001000102
45.		Convert the following hexadecimal number to binary. C916
		A. 101110012 B. 101110112 C. 100111002 D. 110010012
46.		Convert the following decimal number to hexadecimal. 125
		A. 7D16 B. D716 C. 7C16 D. C716
47.		A decimal 11 in BCD is ________.
		A. 00001011 B. 00001100 C. 00010001 D. 00010010
48.		What is the resultant binary of the decimal problem 49 + 01 = ?
		A. 01010101 B. 00110101 C. 00110010 D. 00110001
49.		The difference of 111 – 001 equals ________.
		A. 100 B. 111 C. 001 D. 110
50.		Convert the binary number 1100 to Gray code.
		A. 0011 B. 1010 C. 1100 D. 1001
51.		The binary number 11101011000111010 can be written in hexadecimal as ________.
		A. DD63A16 B. 1D63A16 C. 1D33A16 D. 1D63116
52.		Which of the following is an invalid BCD code?
		A. 0011 B. 1101 C. 0101 D. 1001
53.		What decimal number does 25 represent?
		A. 10 B. 31 C. 25 D. 32
54.		Convert the Gray code 1011 to binary.
		A. 1011 B. 1010 C. 0100 D. 1101
55.		Determine the decimal equivalent of the signed binary number 11110100 in 1's complement.
		A. 116 B. –12 C. 11 D. 128
56.		What is the difference between binary coding and binary-coded decimal?
		A. BCD is pure binary. B. Binary coding has a decimal format. C. BCD has no decimal format. D. Binary coding is pure binary.
57.		Convert the following decimal number to BCD. 127
		A. 011100100001 B. 111010001 C. 001010111 D. 000100100111
58.		Digital electronics is based on the ________ numbering system.
		A. Decimal B. Octal C. Binary D. Hexadecimal
59.		An informational signal that makes use of binary digits is considered to be:
		A. solid state B. Digital C. Analog D. non-oscillating
60.		The 1's complement of 10011101 is ________.
		A. 01100010 B. 10011110 C. 01100001 D. 01100011
61.		The binary number 101110101111010 can be written in octal as ________.
		A. 515628 B. 565778 C. 656278 D. 565728
62.		Convert 45710 to hexadecimal.
		A. 711 B. 2C7 C. 811 D. 1C9
63.		Convert the decimal number 151.75 to binary.
		A. 10000111.11 B. 11010011.01 C. 00111100.00 D. 10010111.11
64.		Convert the following octal number to binary. 1048
		A. 0010001002 B. 1000000012 C. 00101002 D. 10000012
65.		3 × 101 + 7 × 100 is equal to ________.
		A. 3.7 B. 37 C. 10 D. 370
66.		3428 is the decimal value for which of the following binary-coded decimal (BCD) groupings?
		A. 11010001001000 B. 11010000101000 C. 011010010000010 D. 110100001101010
67.		The binary-coded decimal (BCD) system can be used to represent each of the 10 decimal digits as a(n):
		A. 4-bit binary code B. 8-bit binary code C. 16-bit binary code D. ASCII code
68.		The decimal number 18 is equal to the binary number ________.
		A. 11110 B. 10001 C. 10010 D. 1111000
69.		The 2's complement of 11100111 is ________.
		A. 11100110 B. 00011001 C. 00011000 D. 00011010
70.		Convert the following decimal number to BCD. 469
		A. 100101101000 B. 010001101001 C. 100001101001 D. 100101100100
71.		Express the decimal number –37 as an 8-bit number in sign-magnitude.
		A. 10100101 B. 00100101 C. 11011000 D. 11010001
72.		Convert the following BCD number to decimal. 010101101001bcd
		A. 539 B. 2551 C. 569 D. 1552
73.		The binary number 11001110 is equal to the decimal number ________.
		A. 12 B. 206 C. 127 D. 66
74.		The binary number for F3A16 is ________.
		A. 111100111010 B. 111100111110 C. 000000111010 D. 000011000100
75.		Convert the following BCD number to decimal. 100000000011bcd
		A. 8003 B. 803 C. 1003 D. 103
76.		Convert the following hexadecimal number to binary. 14B16
		A. 1011010000012 B. 0001010010112 C. 0001010011012 D. 1101010000012
77.		What is the result when a decimal 5238 is converted to base 16?
		A. 327.375 B. 12.166 C. 1388 D. 1476
78.		The octal number for binary 1101110101110110 is ________.
		A. 6545218 B. 5565618 C. 1566568 D. 1565668
79.		Convert the following hexadecimal number to decimal. 1CF16
		A. 463 B. 4033 C. 479 D. 4049
80.		Convert the binary number 1011010 to hexadecimal.
		A. 5B B. 5F C. 5A D. 5C
81.		Convert the following decimal number to hexadecimal. 74
		A. A416 B. B416 C. 4A16 D. 4B16
82.		Convert hexadecimal C0B to binary.
		A. 110000001011 B. 110000001001 C. 110000001100 D. 110100001011
83.		Convert binary 1001 to hexadecimal.
		A. 916 B. 1116 C. 10116 D. 1016
84.		Convert 73116 to decimal.
		A. 216.4 B. 985 C. 3D9 D. 1841
85.		What is the decimal value of the hexadecimal number 777?
		A. 191 B. 1911 C. 19 D. 19111
86.		Convert 110010012 (binary) to decimal.
		A. 201 B. 2001 C. 20 D. 210
87.		Convert the following decimal number to octal. 39
		A. 638 B. 368 C. 478 D. 748
88.		The American Standard Code for Information Interchange (ASCII) uses how many individual pulses for any given character?
		A. 1 B. 2 C. 7 D. 8
89.		Convert the following hexadecimal number to decimal. B516
		A. 212 B. 197 C. 165 D. 181
90.		The BCD number for decimal 16 is ________.
		A. 00010110 B. 00010000 C. 00010010 D. 11100000
91.		Alphanumeric codes should include as a minimum:
		A. the capacity to represent the alphabet upper- and lowercase characters and the decimal numbers in a straight binary format. B. the capacity to code all possible decimal numbers in a direct octal representation of BCD codes. C. the alphabet upper- and lowercase letters, the decimal digits, the seven punctuation marks, and other characters or symbols. D. the ability to represent decimal numbers greater than 12810 in a straight binary format.
92.		Convert 52716 to binary.
		A. 343 B. 001101000111 C. 010100100111 D. 011100100101
93.		Convert 5278 to binary.
		A. 011100111 B. 101010111 C. 343 D. 111010101
94.		The base of the hexadecimal system is:
		A. eight. B. sixteen. C. ten. D. two.
95.		Assign the proper even parity bit to the code 1100001.
		A. 11100001 B. 1100001 C. 01100001 D. 01110101
96.		Select one of the following statements that best describes the parity method of error detection.
		A. Parity checking is best suited for detecting single-bit errors in transmitted codes. B. Parity checking is not suitable for detecting single-bit errors in transmitted codes. C. Parity checking is capable of detecting and correcting errors in transmitted codes. D. Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another.
97.		Which of the following is the primary advantage of using the BCD code instead of straight binary coding?
		A. Fewer bits are required to represent a decimal number with the BCD code. B. The relative ease of converting to and from decimal. C. BCD codes are easily converted to hexadecimal codes. D. BCD codes are easily converted to straight binary codes.
98.		How many BCD code bits and how many straight binary bits would be required to represent the decimal number 643?
		A. 12 BCD, 12 binary B. 12 BCD, 10 binary C. 12 BCD, 9 binary D. 16 BCD, 9 binary
99.		When using the repeated division by 2 method of converting from decimal to binary, one must write the first remainder as the:
		A. MSB B. MSB, provided the following sequence of remainders are written in descending order until the final remainder is achieved. C. LSB D. LSB, provided the final remainder is used to replace the original LSB, which is then moved to the MSB position.

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