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 → Introduction to Computer 38

Which RAID level provides striping with no redundancy?
RAID 0
click to copy
RAID 1 provides?
Mirroring
click to copy
Which command in Linux lists directory contents?
ls
click to copy
Which Windows command shows IP configuration?
ipconfig
click to copy
The CPU utilization in an ideal system should be close to?
80-90%
click to copy
A thread is?
A lightweight process sharing same address space
click to copy
Multithreading allows?
Multiple threads of one process to run concurrently
click to copy
Which type of OS is used in ATMs?
Time-sharing
click to copy
A distributed OS runs on?
Multiple networked computers
click to copy
Which scheduling gives highest priority to shortest jobs?
SJF
click to copy
Spooling stands for?
Simultaneous Peripheral Operations Online
click to copy
Which memory area stores local variables of a function?
Stack
click to copy
Dynamic memory allocation uses?
Heap
click to copy
Which of the following causes internal fragmentation?
Fixed-size partitioning
click to copy
What is the purpose of an interrupt?
To signal CPU that immediate attention is needed
click to copy
Which of the following is NOT a process state?
Compiling
click to copy
The purpose of page table is?
Map virtual addresses to physical addresses
click to copy
Which OS developed by Linus Torvalds?
Linux
click to copy
Semaphore is used to?
Synchronize process access to shared resources
click to copy
Mutual exclusion means?
Only one process accesses critical section at a time
click to copy
A pipe in OS is used for?
Inter-process communication
click to copy
Which command in Windows clears the command prompt screen?
cls
click to copy
Process ID (PID) is?
Unique identifier for each process
click to copy
Zombie process is a process that?
Has finished but entry remains in process table
click to copy
Which storage technology has no mechanical moving parts?
SSD
click to copy
NVMe stands for?
Non-Volatile Memory Express
click to copy
Which file attribute makes it read-only?
R
click to copy
Which protocol is used to transfer files over the internet?
FTP
click to copy
Which key is used to permanently delete a file in Windows?
Shift+Delete
click to copy
What extension do executable files in Windows typically have?
.exe
click to copy
GUI was first commercially introduced by?
Xerox PARC
click to copy
Which key combination opens Task Manager in Windows?
Ctrl+Shift+Esc
click to copy
The recycle bin in Windows temporarily stores?
Deleted files
click to copy
Which of the following provides wireless connectivity?
Wi-Fi (WLAN)
click to copy
Bluetooth operates at which frequency?
2.4 GHz
click to copy
IP address version 4 consists of?
32 bits
click to copy
IPv6 address consists of?
128 bits
click to copy
Which device operates at the network layer (Layer 3)?
Router
click to copy

Computer Fundamentals → Operating System Basics 1

Which of the following is a batch operating system characteristic?
No user interaction during execution
click to copy

Computer Fundamentals → Memory Units 1

Which is used to protect OS from unauthorized access?
All of the above
click to copy