Operating System Questions (One Word)

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  • What is the main role of an OS? → Management

  • Which OS manages multiple users simultaneously? → Multiuser

  • Which OS allows multiple tasks at once? → Multitasking

  • Which OS runs on mobile devices? → Android

  • Which OS is developed by Apple? → macOS

  • Which OS is open‑source and widely used in servers? → Linux

  • Which OS is most common on desktops? → Windows

  • What is the kernel responsible for? → Control

  • What is the smallest unit of CPU scheduling? → Process

  • What is a lightweight process called? → Thread

  • What is the purpose of scheduling? → Allocation

  • What is the memory management technique that swaps processes? → Paging

  • What is the memory management technique using fixed partitions? → Segmentation

  • What is virtual memory used for? → Extension

  • What is the file system in Windows? → NTFS

  • What is the file system in Linux? → EXT4

  • What is the file system in macOS? → APFS

  • What is the interface between user and OS? → Shell

  • What is the command‑line interface in Windows? → CMD

  • What is the command‑line interface in Linux? → Bash

  • What is the boot program stored in BIOS? → Loader

  • What is the first program executed by OS? → Kernel

  • What is the process of starting a computer called? → Booting

  • What is the technique to prevent deadlock? → Avoidance

  • What is the condition when multiple processes wait forever? → Deadlock

  • What is the solution to deadlock? → Preemption

  • What is the scheduling algorithm based on shortest job? → SJF

  • What is the scheduling algorithm based on priority? → Priority

  • What is the scheduling algorithm based on time slice? → Round‑Robin

  • What is the scheduling algorithm based on arrival order? → FCFS

  • What is the OS component that manages files? → File‑System

  • What is the OS component that manages memory? → Memory

  • What is the OS component that manages CPU? → Scheduler

  • What is the OS component that manages devices? → Driver

  • What is the OS component that manages security? → Protection

  • What is the OS component that manages communication? → IPC

  • What is the system call used for process creation in Unix? → Fork

  • What is the system call used for process execution in Unix? → Exec

  • What is the system call used for process termination? → Exit

  • What is the system call used for waiting? → Wait

  • What is the system call used for file opening? → Open

  • What is the system call used for file closing? → Close

  • What is the system call used for file reading? → Read

  • What is the system call used for file writing? → Write

  • What is the system call used for file deletion? → Unlink

  • What is the system call used for file creation? → Create

  • What is the OS that runs on embedded systems? → RTOS

  • What is the OS that runs on mainframes? → z/OS

  • What is the OS that runs on servers? → Unix

  • What is the OS that runs on supercomputers? → Linux

  • What is the OS that supports multitasking? → Multitasking

  • What is the OS that supports multiple processors? → Multiprocessing

  • What is the OS that supports multiple users? → Multiuser

  • What is the OS that supports real‑time tasks? → RTOS

  • What is the OS that supports distributed computing? → Distributed

  • What is the OS that supports virtualization? → Hypervisor

  • What is the OS that supports cloud computing? → Cloud

  • What is the OS that supports embedded devices? → Embedded

  • What is the OS that supports handheld devices? → Mobile

  • What is the OS that supports servers? → Server

  • What is the OS that supports desktops? → Desktop

  • What is the OS that supports mainframes? → Mainframe

  • What is the OS that supports supercomputers? → Supercomputer

  • What is the OS that supports batch processing? → Batch

  • What is the OS that supports time‑sharing? → Timesharing

  • What is the OS that supports networked systems? → Network

  • What is the OS that supports interactive systems? → Interactive

  • What is the OS that supports command‑line interface? → CLI

  • What is the OS that supports graphical interface? → GUI

  • What is the OS that supports open source? → Linux

  • What is the OS that supports proprietary systems? → Windows

  • What is the OS that supports Apple devices? → macOS

  • What is the OS that supports Android devices? → Android

  • What is the OS that supports iOS devices? → iOS

  • What is the OS that supports Chrome devices? → ChromeOS

  • What is the OS that supports Unix systems? → Unix

  • What is the OS that supports Solaris systems? → Solaris

  • What is the OS that supports FreeBSD systems? → FreeBSD

  • What is the OS that supports Fedora systems? → Fedora

  • What is the OS that supports Ubuntu systems? → Ubuntu

  • What is the OS that supports CentOS systems? → CentOS

  • What is the OS that supports Red Hat systems? → RHEL

  • What is the OS that supports Debian systems? → Debian

  • What is the OS that supports SUSE systems? → SUSE

  • What is the OS that supports Arch systems? → Arch

  • What is the OS that supports Kali systems? → Kali

  • What is the OS that supports Mint systems? → Mint

  • What is the OS that supports Gentoo systems? → Gentoo

  • What is the OS that supports OpenBSD systems? → OpenBSD

  • What is the OS that supports NetBSD systems? → NetBSD

  • What is the OS that supports Haiku systems? → Haiku

  • What is the OS that supports ReactOS systems? → ReactOS

  • What is the OS that supports DOS systems? → DOS

  • What is the OS that supports legacy Windows? → XP

  • What is the OS that supports modern Windows? → 11

  • What is the OS that supports virtualization by VMware? → ESXi

  • What is the OS that supports virtualization by Microsoft? → Hyper‑V

  • What is the OS that supports virtualization by Oracle? → VirtualBox

  • What is the OS that supports containerization? → Docker

  • What is the OS that supports Kubernetes orchestration? → Kubernetes

  • What is the OS that manages real‑time tasks? → RTOS

  • What is the OS that runs on IBM mainframes? → z/OS

  • What is the OS that runs on Apple phones? → iOS

  • What is the OS that runs on Google phones? → Android

  • What is the OS that runs on servers? → Unix

  • What is the OS that runs on supercomputers? → Linux

  • What is the OS that runs on Microsoft consoles? → Xbox

  • What is the OS that runs on PlayStation consoles? → Orbis

  • What is the OS that runs on embedded devices? → Firmware

  • What is the OS that runs on cloud platforms? → Virtualization

  • What is the OS that runs on VMware? → ESXi

  • What is the OS that runs on Oracle servers? → Solaris

  • What is the OS that runs on Red Hat systems? → RHEL

  • What is the OS that runs on Debian systems? → Debian

  • What is the OS that runs on Ubuntu systems? → Ubuntu

  • What is the OS that runs on Fedora systems? → Fedora

  • What is the OS that runs on CentOS systems? → CentOS

  • What is the OS that runs on SUSE systems? → SUSE

  • What is the OS that runs on Kali systems? → Kali

  • What is the OS that runs on Arch systems? → Arch

  • What is the OS that runs on Chrome devices? → ChromeOS

  • What is the OS that runs on Raspberry Pi? → Raspbian

  • What is the OS that runs on Microsoft servers? → Windows‑Server

  • What is the OS that runs on Apple servers? → Xserve

  • What is the OS that runs on BSD systems? → FreeBSD

  • What is the OS that runs on NetBSD systems? → NetBSD

  • What is the OS that runs on OpenBSD systems? → OpenBSD

  • What is the OS that runs on HP servers? → HP‑UX

  • What is the OS that runs on AIX systems? → AIX

  • What is the OS that runs on Google servers? → Fuchsia

  • What is the OS that runs on Microsoft cloud? → Azure

  • What is the OS that runs on Amazon cloud? → AWS‑Linux

  • What is the OS that runs on Oracle cloud? → Oracle‑Linux

  • What is the OS that runs on IBM cloud? → IBM‑Cloud

  • What is the OS that runs on Huawei devices? → HarmonyOS

  • What is the OS that runs on Samsung devices? → Tizen

  • What is the OS that runs on smart TVs? → WebOS

  • What is the OS that runs on wearables? → WearOS

  • What is the OS that runs on Apple watches? → watchOS

  • What is the OS that runs on Apple TVs? → tvOS

  • What is the OS that runs on Cisco routers? → IOS

  • What is the OS that runs on Juniper routers? → Junos

  • What is the OS that runs on Palo Alto firewalls? → PAN‑OS

  • What is the OS that runs on Fortinet firewalls? → FortiOS

  • What is the OS that runs on Check Point firewalls? → Gaia

  • What is the OS that runs on Dell servers? → Dell‑Linux

  • What is the OS that runs on Lenovo servers? → Lenovo‑Linux

  • What is the OS that runs on VMware desktops? → Horizon

  • What is the OS that runs on Citrix systems? → XenServer

  • What is the OS that runs on Google Nest devices? → NestOS

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