A) To make phone calls.
B) To browse the internet faster.
C) To create documents and presentations.
D) To manage computer hardware and act as an intermediary between the user and the computer.

A) Linux
B) Windows
C) macOS
D) Android

A) To provide an interface for hardware devices to communicate with the operating system.
B) To play video games.
C) To manage email accounts.
D) To design websites.

A) Android
B) Windows
C) Ubuntu
D) macOS

A) Great User Interface
B) Global User Interaction
C) General Usage Indicator
D) Graphical User Interface

A) To track the number of steps taken in a day.
B) To design logos for companies.
C) To load the operating system into memory during the boot process.
D) To create music playlists.

A) The highest level of access to the operating system, allowing full control over system settings and files.
B) Access to root vegetables.
C) Access to tree roots.
D) Access to plant roots.

A) Juggling multiple physical objects.
B) Downloading multiple files simultaneously.
C) The ability of an operating system to execute multiple tasks concurrently.
D) Using multiple keyboards and mice at the same time.

A) iOS
B) Windows
C) Chrome OS
D) Linux

A) To manage financial transactions.
B) A central database used to store configuration settings and options for the operating system.
C) To keep track of physical exercise routines.
D) To store photos and videos.

A) A messaging system for computer users.
B) An interface provided by the operating system that allows user-level processes to request services from the kernel.
C) A customer service hotline for software issues.
D) An online shopping platform.

A) Protective covering for hardware components.
B) Online shopping platform.
C) A program that interprets commands and allows the user to interact with the operating system.
D) Outer layer of the operating system.

A) To monitor system performance and manage running processes.
B) To play video games.
C) To send emails.
D) To create presentations.

A) Chrome OS
B) Windows
C) iOS
D) Ubuntu

A) A time slice occurring, requiring a context switch.
B) User input from the keyboard.
C) The completion of a program's execution.
D) Accessing valid memory addresses.

A) Object-oriented design
B) Functional programming
C) Imperative programming
D) Procedural design

A) EXT4
B) FAT32
C) NTFS
D) HFS+

A) Redundancy
B) Open-source development
C) Minimalism
D) Security

A) UNIX
B) MINIX
C) OS/360
D) Fortran Monitor System (FMS)

A) INT X, where X is the offset number in hexadecimal format.
B) MOV X, Y, where X and Y are registers.
C) CALL X, where X is a function identifier.
D) JMP X, where X is the jump address.

A) alpha & bravo.
B) alpha < bravo.
C) alpha | bravo.
D) alpha > bravo.

A) exec(pid, signum).
B) kill(pid, signum).
C) fork(pid, signum).
D) wait(pid, signum).

A) Symbian OS
B) BlackBerry OS
C) VAX/VMS
D) Linux

A) BSD License
B) MIT License
C) Apache License
D) GNU General Public License (GPL)

A) Windows or macOS
B) Ubuntu or Fedora
C) Syllable or TempleOS
D) Android or iOS

A) Linux
B) UNIX
C) System/360
D) MULTICS

A) Android networking features
B) Windows networking features
C) Standard UNIX networking features
D) MacOS networking features

A) IEEE 802.11
B) POSIX
C) ANSI C
D) ISO/IEC 27001

A) Ruby
B) Java
C) Python
D) C++

A) SQL injection attacks.
B) Buffer overflow attacks.
C) Phishing attacks.
D) Cross-site scripting attacks.

A) Batch processing
B) Cooperative multitasking
C) Preemptive multitasking
D) Non-preemptive multitasking

A) Steve Jobs.
B) Andrew S. Tanenbaum.
C) Bill Gates.
D) Linus Torvalds.

A) Bionic C library
B) Windows API
C) Linux kernel
D) UNIX shell

A) UNIX
B) IBM PC
C) Apple's Macintosh
D) Microsoft Windows

A) Address space layout randomization (ASLR).
B) Secure socket layer (SSL).
C) Data encryption standard (DES).
D) Virtual private network (VPN).