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Phrases Previous Year Questions (PYQs)
Phrases Computer Memory Back-up Devices PYQ
One TeraByte(TB)=_________GB and One ExaByte(EB)=_______GB
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Solution
| Unit | Shortened | Capacity |
|---|---|---|
| Bit | b | 1 or 0 (on or off) |
| Byte | B | 8 bits |
| Kilobyte | KB | 1024 bytes |
| Megabyte | MB | 1024 kilobytes |
| Gigabyte | GB | 1024 megabytes |
| Terabyte | TB | 1024 gigabytes |
| Petabyte | PB | 1024 terabytes |
| Exabyte | EB | 1024 petabytes |
| Zettabyte | ZB | 1024 exabytes |
| Yottabyte | YB | 1024 zettabytes |
Which of the following is the fastest means of memory access for CPU?
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Solution
Registers are a type of computer memory used to quickly accept, store, and transfer data and instructions that are being used immediately by the CPU. The registers used by the CPU are often termed as Processor registers.
Let the memory access time is 10 miliseconds and cache hit ratio 15%. The effective memory access time is
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Solution
What is the name of the storage device that compensates the difference in rates of flow of data from one device to another?
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Solution
Data Flow Management
Question:
What is the name of the storage device that compensates the difference in rates of flow of data from one device to another?
✅ Correct Answer: Buffer
Explanation:
A Buffer is a temporary storage area that helps in matching the speed of data transfer between a fast and a slow device, ensuring smooth data flow without loss.
Final Answer: Buffer
How many 32K × 1 RAM chips are needed to provide a memory capacity of 256K bytes?
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Solution
Quick Solution
Each RAM chip: 32K × 1 = 32K bits = 4 KB
Total required: 256 KB
Number of chips needed: 256 ÷ 4 = 64
✅ Final Answer: 64 chips
Consider a hard disk with 16 recording surfaces (0 – 15) having 16384 cylinders (0 – 16383) and each cylinder contains 64 sectors (0 – 63). Data storage capacity in each sector is 512 bytes. Data are organized stored in the disk and the starting disk location of the file is < 1200, 9, 40>. What is the cylinder number of the last sector of the file, if it is stored in a contiguous manner?
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Solution
A hard disk has a rotational speed of 6000 rpm. Its average latency time is
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Solution
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