1 KB equals
- A. 1000 bytes exactly in binary memory
- B. 1024 bytes
- C. 1024 bits only
- D. 1024 MB
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Correct option: B — 1024 bytes
Class 9 convention: 1 KB = 1024 bytes.
Class 9 · कंप्यूटर · 255+ Q&A
Class 9 Computer — Memory and Storage Important Questions with Answers
IT basics, hardware, software, internet safety and MS Office for Class 9. Showing 20 of 25 on page 1 / 2.
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- अगला पेज · एक स्क्रीन पर 20 प्रश्न
All chapters
1. Hardware
2. Software
3. Operating System
4. Memory and Storage
5. Input and Output
6. Networking
7. Internet and Email
8. Cyber Safety
9. MS Office
10. Number System
11. IPR and Digital Ethics
Page 1 of 2 · 25 questions in this view
1 MB equals
- A. 1024 KB
- B. 1000 KB only in all books
- C. 1024 GB
- D. 8 bits
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Correct option: A — 1024 KB
1 MB = 1024 KB = 1024 × 1024 bytes.
1 GB equals
- A. 1024 MB
- B. 1024 KB
- C. 1024 bytes
- D. 1 bit
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Correct option: A — 1024 MB
Next unit after MB in the 1024 scale.
The smallest unit of data is a
- A. byte
- B. bit
- C. nibble always larger than byte
- D. terabyte
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Correct option: B — bit
A bit is 0 or 1; a byte is 8 bits.
A nibble is
- A. 16 bits
- B. 4 bits
- C. 1024 bits
- D. 1 GB
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Correct option: B — 4 bits
Half a byte.
Primary memory usually refers to
- A. pen drive only
- B. RAM and ROM inside the machine
- C. a bookshelf
- D. a projector
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Correct option: B — RAM and ROM inside the machine
Secondary memory is HDD, SSD, DVD, cloud copies.
Cache memory is
- A. slower than a CD always
- B. a small fast memory close to the CPU
- C. a type of printer
- D. an email folder
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Correct option: B — a small fast memory close to the CPU
It stores frequently used data for speed.
Which is secondary storage?
- A. ALU
- B. Hard disk
- C. Register only
- D. Control unit
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Correct option: B — Hard disk
Registers are inside the CPU; the disk is secondary.
1 TB is
- A. 1024 GB
- B. 1024 MB
- C. 8 bits
- D. 1024 bytes
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Correct option: A — 1024 GB
Tera follows giga on the 1024 scale used in IT class.
ROM is used mainly to
- A. store the changing desktop wallpaper only
- B. keep firmware/BIOS instructions that must not vanish
- C. print posters
- D. chat
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Correct option: B — keep firmware/BIOS instructions that must not vanish
Read-only in the classic explanation; some chips are updatable firmware.
1024 × 1024 bytes is
- A. 1 KB
- B. 1 MB
- C. 1 bit
- D. 1 nibble
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Correct option: B — 1 MB
1024 KB = 1 MB.
Bit is short for
- A. binary digit
- B. big internet token
- C. basic input tool
- D. blue ink type
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Correct option: A — binary digit
The 0/1 building block.
Which list is in increasing size?
- A. GB, MB, KB, byte
- B. bit, byte, KB, MB, GB
- C. TB, bit, MB
- D. MB, bit, TB, byte
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Correct option: B — bit, byte, KB, MB, GB
Remember 1024 between KB, MB, GB.
Registers are smaller than
- A. a bit always in capacity? they hold few words; cache and RAM are larger pools
- B. the internet
- C. a school building only as analogy — RAM is larger than a register file
- D. a TB disk always as the point: register < cache < RAM < disk
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Correct option: D — a TB disk always as the point: register < cache < RAM < disk
Memory hierarchy: register, cache, RAM, secondary.
Flash memory is used in
- A. only mechanical HDDs’ platters
- B. pendrives and many SSDs / cards
- C. only paper
- D. only CRT
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Correct option: B — pendrives and many SSDs / cards
No spinning disk in a basic pen drive.
1024 MB equals
- A. 1 KB
- B. 1 GB
- C. 1 bit
- D. 8 nibbles
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Correct option: B — 1 GB
1024 MB = 1 GB on the binary scale taught in class.
Why 1024 and not 1000 in class memory sums?
- A. Because 2^10 = 1024, handy for binary machines
- B. Because there are 1024 months
- C. Because HTTP says so
- D. Because Excel SUM needs it
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Correct option: A — Because 2^10 = 1024, handy for binary machines
SI kilo is 1000; computer tradition in school is 1024.
Write the memory units from bit to TB using 1024.
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8 bits = 1 byte. 1024 bytes = 1 KB. 1024 KB = 1 MB. 1024 MB = 1 GB. 1024 GB = 1 TB. A nibble is 4 bits. School numericals use this 1024 ladder, not 1000.
Distinguish RAM and ROM.
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RAM is volatile read-write memory for running programs; it clears when power dies. ROM keeps firmware/BIOS instructions and does not wipe on shutdown. RAM size affects how many programs feel smooth. You do not store homework only in RAM.
What is the memory hierarchy?
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From fastest-smallest to slower-larger: registers, cache, RAM, then secondary storage (SSD/HDD/optical/USB). The CPU looks in the faster levels first. Hierarchy is why a 4 GB pendrive is not a substitute for enough RAM.
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Class 9 Computer में कितने प्रश्न हैं? 255 महत्वपूर्ण प्रश्न: 174 MCQ, 50 लघु, 31 दीर्घ।
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