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15541+ short questions with short answers, covering every category and sub-category on the site — no long articles to scroll through. Good for a fast recap before an exam, or a few minutes of daily practice.

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Computer Fundamentals → Introduction to Computer 35

Decimal 10 in octal is?
12
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What is the largest single digit in octal?
7
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Convert hex 2F to decimal?
47
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Binary 1001 × 2 in binary is?
10010
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Binary multiplication 101 × 11 = ?
1111
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Octal digit 7 in binary is?
111
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Hex A0 in decimal is?
160
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Binary 1111 1111 1111 1111 in hex is?
FFFF
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The 2's complement of 0 (8-bit) is?
00000000
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Convert hex 100 to decimal?
256
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Decimal 32 in binary is?
100000
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Binary 1010 in octal is?
12
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Which base requires the fewest digits to represent large numbers?
Hexadecimal
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Decimal 7 in binary is?
111
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Hex 1F in decimal is?
31
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Binary right shift by 1 is equivalent to?
Division by 2
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Octal 100 in decimal is?
64
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Decimal 256 in hex is?
100
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Binary 10000000 in decimal is?
128
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In octal, 8 is represented as?
10
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Binary 0001 0000 in decimal is?
16
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Decimal 45 in binary is?
101101
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Hex F in binary is?
1111
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Convert octal 12 to decimal?
10
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Binary AND of 1010 and 1100 is?
1000
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Binary OR of 1010 and 0101 is?
1111
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Binary XOR of 1010 and 1010 is?
0000
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Decimal 0.5 in binary is?
0.1
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Hex 3F in binary is?
00111111
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NOT of binary 10101010 is?
01010101
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Decimal 100 in octal is?
144
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Which component of CPU temporarily stores data being processed?
Registers
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What does 'booting' a computer mean?
Starting up the OS
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POST stands for in computing?
Power On Self Test
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Which file system is native to Windows?
FAT32 and NTFS
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Computer Fundamentals → Number System 5

The radix (base) of hexadecimal system is?
16
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Convert decimal 255 to hexadecimal?
FF
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Which number system is NOT positional?
Roman numerals
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Which binary number is odd?
1011
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Hexadecimal digit B equals decimal?
11
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