Computer Studies

Includes fundamentals of computers, hardware and software, operating systems, MS Office, internet, networking, and basic IT concepts for recruitment exams.

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1
Which type of RAM is faster: DRAM or SRAM?
Easy 1 Mark
Which RAM avoids the time wasted on refreshing cycles?
A DRAM
B Both are equally fast
C SRAM
D Speed depends on manufacturer
2
Which type of RAM is used as the main system memory in computers?
Easy 1 Mark
Cost matters for large-capacity main memory — which is cheaper?
A SRAM
B EEPROM
C DRAM
D Cache memory
3
What does ROM stand for?
Easy 1 Mark
ROM can be read but not easily written to — hence its name.
A Random Output Memory
B Read Only Memory
C Rewritable Output Module
D Rapid Output Memory
4
What is the key difference between RAM and ROM?
Easy 1 Mark
Volatile means data disappears without power — which one keeps data permanently?
A RAM is slower than ROM
B RAM is non-volatile while ROM is volatile
C RAM is volatile (temporary) while ROM is non-volatile (permanent)
D ROM is used for running programs while RAM stores firmware
5
What is ROM primarily used for in a computer?
Easy 1 Mark
What instructions does a computer need before it can even start the operating system?
A Running user applications like word processors
B Storing temporary data during program execution
C Storing firmware and instructions needed to boot the computer
D Acting as virtual memory when RAM is full
6
Which of the following correctly describes a characteristic of ROM?
Easy 1 Mark
Non-volatile means the data survives without power.
A Data is lost when the computer is turned off
B Data can be freely written and rewritten like RAM
C Data is not lost when power is turned off
D ROM is faster than RAM
7
What is cache memory?
Easy 1 Mark
Think about a small but super-fast shortcut memory right next to the CPU.
A A large storage area on the hard disk
B A very small but extremely fast memory located close to or inside the CPU
C A type of secondary storage for backups
D Another name for virtual memory
8
What is an advantage of virtual memory?
Easy 1 Mark
What is the main problem virtual memory solves?
A It makes the hard disk faster than RAM
B It allows programs larger than physical RAM to run
C It permanently increases the size of RAM
D It removes the need for secondary storage
9
What is the main purpose of secondary storage devices?
Easy 1 Mark
What type of storage keeps your files safe even after shutdown?
A To process data at high speed
B To store data permanently even when the computer is turned off
C To act as virtual memory for the CPU
D To speed up the CPU clock
10
Which of the following is a characteristic of secondary storage?
Easy 1 Mark
Think about how a hard drive compares to RAM in terms of speed and permanence.
A Volatile — data lost when power is off
B Directly accessed by CPU at very high speed
C Non-volatile with large storage capacity but slower than primary memory
D Stores only temporary data during processing
11
What is a Hard Disk Drive (HDD)?
Easy 1 Mark
HDD uses spinning magnetic disks and a moving read/write head.
A A storage device that uses flash memory chips with no moving parts
B A storage device that uses laser technology to read data
C A storage device that stores data on magnetic platters with mechanical moving parts
D A portable storage device connected via USB
12
What is a Solid State Drive (SSD)?
Easy 1 Mark
No moving parts means faster access and greater durability.
A A storage device using spinning magnetic platters
B A storage device using laser technology to read optical discs
C A storage device using flash memory chips with no moving parts
D A portable storage device connected via Bluetooth
13
Which is faster: HDD or SSD?
Easy 1 Mark
Moving parts create delays — which drive has no moving parts?
A HDD because it has larger storage
B Both are equally fast
C HDD because it uses magnetic technology
D SSD because it has no moving parts and uses flash memory
14
What technology do optical storage devices use to read and write data?
Easy 1 Mark
Think about how a CD player reads a disc.
A Magnetic fields
B Electrical signals
C Laser technology
D Flash memory chips
15
Which of the following is an example of an optical storage device?
Easy 1 Mark
Which option is read using a laser beam?
A USB flash drive
B SSD
C DVD (Digital Versatile Disc)
D SD card
16
What is a USB flash drive?
Easy 1 Mark
Think about the small stick you plug into a USB port to transfer files.
A A large magnetic disk drive for desktop computers
B A portable storage device using flash memory connected via USB port
C An optical disc that uses laser technology
D A type of RAM used for temporary storage
17
Which of the following is commonly used in smartphones and digital cameras for storage?
Easy 1 Mark
Think about the tiny card slot in a smartphone or camera.
A Hard Disk Drive (HDD)
B DVD discs
C Memory cards such as SD and MicroSD cards
D USB flash drives
18
What happens to data stored in RAM when the computer is switched off?
Easy 1 Mark
Volatile means it disappears without power.
A Data is saved automatically to the hard disk
B Data remains permanently in RAM
C Data is lost because RAM is volatile
D Data is transferred to ROM
19
Which type of memory stores the instructions needed to start (boot) the computer?
Easy 1 Mark
What must already be in the computer before the OS even loads?
A RAM
B Cache memory
C ROM
D Virtual memory
20
Which storage device is most suitable for transferring files between two computers?
Easy 1 Mark
You need something portable that plugs into any computer.
A Hard Disk Drive
B ROM chip
C USB flash drive
D Cache memory
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