Basics of Bits, bytes, and data units (KB, MB, GB, TB) MCQs
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.
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.