Here we have 50 multiple-choice questions (MCQs) focused on Basics of Bits, bytes, and data units (KB, MB, GB, TB), along with answers and explanations.
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1. What is the basic unit of data in computing?
- Bit
- Byte
- Megabyte
- Terabyte
The fundamental unit of data in computing is a "bit," which can represent either 0 or 1.
2. How many bits are there in a byte?
- 4 bits
- 8 bits
- 16 bits
- 32 bits
A byte consists of 8 bits.
3. What is the binary representation of the decimal number 10?
- 1010
- 1100
- 1111
- 1001
The decimal number 10 is represented in binary as 1010.
4. How many bytes are in a kilobyte (KB)?
- 1000 bytes
- 1024 bytes
- 1048576 bytes
- 1000000 bytes
A kilobyte (KB) is equal to 1024 bytes.
5. What is the next data unit larger than a terabyte (TB)?
- Petabyte (PB)
- Gigabyte (GB)
- Exabyte (EB)
- Zettabyte (ZB)
The next data unit larger than a terabyte is a petabyte (PB).
6. How many bits are in a nibble?
- 2 bits
- 4 bits
- 8 bits
- 16 bits
A nibble is composed of 4 bits.
7. What is the binary representation of the decimal number 25?
- 11001
- 11100
- 11010
- 10101
The decimal number 25 is represented in binary as 11001.
8. How many kilobytes (KB) are in a megabyte (MB)?
- 1000 KB
- 1024 KB
- 1048576 KB
- 1000000 KB
A megabyte (MB) is equal to 1024 kilobytes (KB).
9. What is the next data unit smaller than a byte?
- Bit
- Nibble
- Kilobyte (KB)
- Megabyte (MB)
The smallest data unit is a bit.
10. How many bytes are in a gigabyte (GB)?
- 1024 bytes
- 1048576 bytes
- 1073741824 bytes
- 1000000000 bytes
A gigabyte (GB) is equal to 1,073,741,824 bytes.
11. What is the binary representation of the decimal number 50?
- 110010
- 101000
- 111100
- 100101
The decimal number 50 is represented in binary as 110010.
12. How many megabytes (MB) are in a terabyte (TB)?
- 1000 MB
- 1024 MB
- 1048576 MB
- 1000000 MB
A terabyte (TB) is equal to 1,048,576 megabytes (MB).
13. What is the binary representation of the decimal number 7?
- 111
- 1000
- 1101
- 1010
The decimal number 7 is represented in binary as 111.
14. How many bits are in a word in most modern computer architectures?
- 4 bits
- 8 bits
- 16 bits
- 32 bits
In most modern computer architectures, a word is composed of 32 bits.
15. What is the binary representation of the decimal number 15?
- 1101
- 1110
- 1111
- 1010
The decimal number 15 is represented in binary as 1111.
16. How many bytes are in a petabyte (PB)?
- 1024 bytes
- 1048576 bytes
- 1073741824 bytes
- 1000000000000 bytes
A petabyte (PB) is equal to 1,073,741,824 bytes.
17. What is the binary representation of the decimal number 3?
- 110
- 100
- 111
- 101
The decimal number 3 is represented in binary as 11.
18. How many kilobytes (KB) are in a gigabyte (GB)?
- 1000 KB
- 1024 KB
- 1048576 KB
- 1000000 KB
A gigabyte (GB) is equal to 1,048,576 kilobytes (KB).
19. What is the binary representation of the decimal number 31?
- 11011
- 11101
- 11110
- 11111
The decimal number 31 is represented in binary as 11111.
20. How many bytes are in an exabyte (EB)?
- 1024 bytes
- 1048576 bytes
- 1073741824 bytes
- 1000000000000000 bytes
An exabyte (EB) is equal to 1,000,000,000,000,000 bytes.
21. What is the binary representation of the decimal number
- 110111
- 111110
- 111111
- 110110
The decimal number 63 is represented in binary as 111111.
22. How many bytes are in a zettabyte (ZB)?
- 1024 bytes
- 1048576 bytes
- 1073741824 bytes
- 1000000000000000000 bytes
A zettabyte (ZB) is equal to 1,000,000,000,000,000,000 bytes.
23. What is the binary representation of the decimal number 127?
- 1101111
- 1111110
- 1111111
- 1101110
The decimal number 127 is represented in binary as 1111111.
24. How many bits are in a nibble?
- 2 bits
- 4 bits
- 8 bits
- 16 bits
A nibble is composed of 4 bits.
25. What is the binary representation of the decimal number 255?
- 11111111
- 10000000
- 11001100
- 10101010
The decimal number 255 is represented in binary as 11111111.
