MCQs
| 1. | 1 GB is equal to _____ (GSET 2018) | |
| A. | 1250 megabytes | |
| B. | 1296 megabytes | |
| C. | 1150 megabytes | |
| D. | 1024 megabytes | |
Answer: Option D
Explanation:
1024 megabytes = 1 gigabyte (GB). So the answer is 1024 megabytes.
Other useful information:
Bit/Binary digit = 0 (or) 1
4 bits = 1 nibble
8 bits = 1 byte
1024 bytes = 1 kilobyte (KB)
1024 kilobytes = 1 megabyte (MB)
1024 megabytes = 1 gigabyte (GB)
1024 gigabytes = 1 terabyte (TB)
1024 terabytes = 1 petabyte (PB)
1024 petabytes = 1 exabyte (EB)
1024 exabytes = 1 zettabyte (ZB)
1024 zettabytes = 1 yottabyte (YB)
| 2. | Which of the following is not correct about BIT? (DSSSB Librarian 2023) | |
| A. | A binary digit | |
| B. | The smallest amount of information a computer can hold | |
| C. | A single bit specifies a single value of 0 or 1 | |
| D. | 4 bits = 1 byte | |
Answer: Option D
Explanation:
8 bits = 1 byte.
So 4 bits = 1 byte is not correct.
3. Match the Correct Memory Units (NTPC 2016)
| a. | 4 bit | p. | 1 MB |
| b. | 1024 KB | q. | 1 byte |
| c. | 1024 TB | r. | 1 nibble |
| d. | 8 bit | s. | 1 PB |
A. a – r, b – p, c – s, d – q
B. a – p, b – s, c – q, d – r
C. a – r, b – s, c – q, d – p
D. a – r, b – q, c – s, d – p
| 1. | A |
| 2. | B |
| 3. | D |
| 4. | C |
Answer: Option 1
Explanation:
4 bits = 1 nibble. So a – r.
1024 kilobytes = 1 megabyte (MB). So b – p.
1024 terabytes = 1 petabyte (PB). So c – s.
8 bits = 1 byte. So d – q.
The correct combination a – r, b – p, c – s, d – q is in A. That A is in option 1. So option 1 is right.
| 4. | _____ are used to measure both computer memory (RAM) and storage capacity of Floppy disks, CD-ROM drives and hard Drives. (AWES (PRT/TGT/PGT) 2015) | |
| A. | Octal numbers | |
| B. | Binary numbers | |
| C. | Bytes | |
| D. | Bites | |
Answer: Option C
Explanation:
Memory storage capacity is measured in bytes.
| 5. | Which is the largest storage unit among the following ? (OPSC OAS Prelims 2024) | |
| A. | Terabyte | |
| B. | Megabyte | |
| C. | Kilobyte | |
| D. | Gigabyte | |
Answer: Option A
Explanation:
1024 bytes = 1 kilobyte (KB)
1024 kilobytes = 1 megabyte (MB)
1024 megabytes = 1 gigabyte (GB)
1024 gigabytes = 1 terabyte (TB)
So terabyte > gigabyte > megabyte > kilobyte. So terabyte is the largest.
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