Operating System

note!Answer: C) Device driver
A device driver is system software that lets the operating system control hardware. Scientific software, games and multimedia software are all application software.

note!Answer: A) System Software
Operating systems, editors, and debuggers are system software, which supports the computer's operation and program development. Application software serves end users' tasks.

note!Answer: C) Diagnostic software
Diagnostic software detects faults in a computer system and identifies their causes. Cookies, boot diskettes, and OS extensions do not perform this function.

note!Answer: B) Alt+F4
Alt+F4 closes the active window or application. Ctrl+S saves, Ctrl+V pastes, and F1 opens help.

note!Answer: A) F1
F1 opens the Help window in Microsoft Office programs.

note!Answer: D) 255
In MS Word 2003, a document password can contain up to 15 characters for password protection. Therefore, for a question specifically about the maximum password length in Word 2003, option B. 15 is the likely expected answer.

note!Answer: C) Multiple virtual storage
MVS (Multiple Virtual Storage) is an IBM mainframe operating system.

note!Answer: B) Booting
Booting is the process of loading the operating system into memory when a computer starts or restarts.

note!Answer: B) Windows vista
Among the listed systems, Windows Vista (2007) is the most recent, after XP, 98 and DOS.

note!Answer: C) Operating system
An operating system manages hardware and runs other programs, so it is system software. Word processors and spreadsheets are application software.

note!Answer: B) System software
System software manages and controls the computer's hardware and resources.

note!Answer: A) Utility
Utility programs are tools used for maintaining and repairing the system.

note!Answer: B) Memory protection
Memory protection is the set of techniques that controls which processes can access or modify particular memory areas.

note!Answer: D) FXZ
FAT16, FAT32 and NTFS are all real file systems. FXZ is not a file system.

note!Answer: C) AUTOEXEC.BAT
DOS runs AUTOEXEC.BAT automatically at startup. The correct spelling is AUTOEXEC.BAT.

note!Answer: A) System software
An operating system manages hardware and provides a platform for other software, so it is system software.

note!Answer: A) DOS
DOS is single-tasking. Windows, UNIX and Linux are multitasking systems.

note!Answer: D) .txt
.com, .exe and .bat files can be run, while .txt is a plain text file.

note!Answer: C) Graphical user
Icons and windows are features of a Graphical User Interface (GUI).

note!Answer: C) Unix
macOS is built on Darwin, which is derived from BSD Unix.