Operating System

note!Answer: A) Drive space
DriveSpace is the Microsoft utility that compresses disk drives to increase usable storage.

note!Answer: C) Kernel
The kernel is the core component of an operating system that manages hardware and system resources.

note!Answer: C) /p
The /P switch pauses the DIR output after each full screen so the user can read the contents.

note!Answer: C) Copy
COPY transfers individual files between disks, while DISKCOPY copies an entire disk.

note!Answer: B) Application icon from taskbar
The taskbar shows buttons for open programs, and clicking one switches to that program.

note!Answer: B) Diagnosis tool
Dr. Watson is a Windows diagnostic tool that collects information about program crashes.

note!Answer: A) New technology file system
NTFS stands for New Technology File System, the file system used by Windows NT and later versions.

note!Answer: B) 127
The DOS command line buffer accepts up to 127 characters in a single line.

note!Answer: B) Console
CON is the DOS device name for the console, meaning the keyboard as input and the screen as output.

note!Answer: D) All of the above
CD, CD\ and CHDIR are all valid DOS commands for changing directories.

note!Answer: B) Ver
The VER command displays the MS-DOS version number.

note!Answer: C) mm-dd-yy
MS-DOS uses the mm-dd-yy date format by default in the US date setting.

note!Answer: A) System time
The TIME command in DOS displays and sets the system time.

note!Answer: A) Batch file
A batch file (.BAT) contains a series of DOS commands that run in sequence.

note!Answer: A) /v
The /V switch makes COPY verify that the files were written correctly.

note!Answer: A) Dir/ah
DIR /AH lists only files that have the hidden attribute.

note!Answer: C) Both a and b
CHDIR and CD are two names for the same command that changes the current directory.

note!Answer: D) Dir/c
DIR /C displays the compression ratio for each file on a compressed (DoubleSpace) drive.

note!Answer: B) Dir
The DIR command lists the files and directories in the current drive or directory.

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