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) Windows
B) macOS
C) Android
D) Linux

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

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

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

A) To design logos for companies.
B) To track the number of steps taken in a day.
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 tree roots.
C) Access to root vegetables.
D) Access to plant roots.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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