Quick Revision

GK One-Line Question & Answer

15541+ short questions with short answers, covering every category and sub-category on the site — no long articles to scroll through. Good for a fast recap before an exam, or a few minutes of daily practice.

Looking for exam process/strategy questions instead? Try the Exam Preparation FAQ →

Computer Fundamentals → Memory Units 20

Which type of RAM loses data when not refreshed periodically?
DRAM
click to copy
SRAM uses which technology for storage?
Flip-flops
click to copy
EPROM stands for?
Erasable Programmable ROM
click to copy
EEPROM can be erased using?
Electrical signals
click to copy
Virtual memory is a technique that uses?
Hard disk as extension of RAM
click to copy
Flash memory is based on which technology?
EEPROM
click to copy
The access time of cache memory compared to RAM is?
Faster
click to copy
Which of the following is secondary storage?
Hard Disk Drive
click to copy
The storage capacity of a hard disk is measured in?
MB and GB
click to copy
CD-ROM storage capacity is approximately?
700 MB
click to copy
Which type of hard disk uses no moving parts?
SSD
click to copy
SSD stands for?
Solid State Drive
click to copy
The RPM of a hard disk refers to?
Revolutions Per Minute
click to copy
PROM stands for?
Programmable ROM
click to copy
The main purpose of cache memory is to?
Speed up CPU operations
click to copy
ECC RAM stands for?
Error Correcting Code RAM
click to copy
The time taken to locate and read data from storage is called?
Seek time plus latency
click to copy
The access method of RAM is?
Direct (Random)
click to copy
DRAM needs to be refreshed approximately how many times per second?
Thousands
click to copy
Which of the following is non-volatile secondary storage?
HDD
click to copy

Computer Fundamentals → Introduction to Computer 18

Which is the fastest memory in a computer system?
Register
click to copy
The correct memory speed hierarchy (fastest to slowest) is?
Register > Cache > RAM > HDD
click to copy
Which memory retains data even after power is turned off?
ROM
click to copy
DVD stands for?
Digital Versatile Disc
click to copy
A single layer DVD can store approximately?
4.7 GB
click to copy
Blu-ray disc derives its name from?
Blue laser used to read/write
click to copy
Which bus connects the CPU to main memory?
Memory bus
click to copy
Which level of cache is the fastest?
L1
click to copy
Secondary memory is also called?
Auxiliary memory
click to copy
Which of the following has the largest storage capacity?
Blu-ray
click to copy
Which is NOT a primary memory?
USB Pendrive
click to copy
NAND flash is named after which logic gate?
NOT AND (NAND)
click to copy
Swap space in Linux is equivalent to which Windows concept?
Both A and B
click to copy
Which memory technology is used in USB flash drives?
NAND Flash
click to copy
Magnetic tape is suitable for?
Sequential access
click to copy
A floppy disk can store?
1.44 MB
click to copy
Which of the following has the fastest data transfer rate?
SSD
click to copy
The read/write head of an HDD floats above the platter at?
Microscopic distance
click to copy

Computer Fundamentals → Number System 2

1 Kilobyte (KB) is equal to?
1024 bytes
click to copy
1 Megabyte is equal to?
1024 KB
click to copy