Operating System

note!Answer: D) Notepad
Notepad is a text editor application, not an operating system.

note!Answer: D) All of the above
Operating systems, compilers and utility programs are all categorized as system software.

note!Answer: A) C
DOS file attributes are R (read-only), H (hidden), S (system) and A (archive); C is not one of them.

note!Answer: D) Conventional memory
Conventional memory is the first 640 KB of RAM, used by DOS and applications.

note!Answer: D) control panel
The Date/Time settings are changed through the Control Panel in Windows.

note!Answer: A) Recycle bin
Deleted files in Windows are temporarily stored in the Recycle Bin.

note!Answer: B) External commands
External DOS commands are separate program files that must be loaded from disk to run.

note!Answer: B) Alt+Ctrl+delete
Ctrl+Alt+Delete opens the Task Manager (or Windows security options) in Windows.

note!Answer: B) 8
DOS 8.3 naming allows a primary file name of up to 8 characters.

note!Answer: D) All of the above
Scandisk, Xcopy and deltree are all external commands/utilities, not internal ones.

note!Answer: B) Verify
VERIFY is built into COMMAND.COM, while Doskey, Print and Find are external programs.

note!Answer: C) dir/w
The /W switch displays directory contents in wide format across the screen.

note!Answer: C) Alt+Enter
Alt+Enter opens the Properties dialog for the selected item in Windows.

note!Answer: A) Drive space
DriveSpace is a Windows disk compression utility. Defragmenter and Scandisk are disk maintenance tools, not compression tools.

note!Answer: A) Desktop
The Desktop is the main screen area in Windows that acts like the top of a physical desk.

note!Answer: D) Disk operating system
DOS stands for Disk Operating System, the early command-line OS for PCs.

note!Answer: C) Chkdsk
CHKDSK reports disk status, including file system information, free and used space, and errors.

note!Answer: A) Cls
CLS (clear screen) clears the display and moves the cursor to the top-left corner.

note!Answer: A) <C:\>
$L prints '<', $P prints the current drive and path (C:\), and $G prints '>', giving <C:\>.

note!Answer: A) Deltree
DELTREE removes a directory along with all its files and subdirectories in one command. RD only removes empty directories.