While working with MS-DOS, which command will you use to display the version?
Answer: B
Correct answer: VER Command
VER displays the version of MS-DOS that is running. DATE shows the date, FORMAT prepares a disk, and there is no DISK command.
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What type of commands are individual programs kept, as separate files on the hard disk (DOS diskette)?
Answer: A
Correct answer: External
External commands are individual programs held as separate files on the disk - FORMAT.COM, XCOPY.EXE, DISKCOPY.COM - which DOS must locate and load before running. Internal commands live inside COMMAND.COM and need no file of their own.
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In DOS, what key would you press to step through the Config.sys and Autoexec.bat?
Answer: D
Correct answer: F8
Pressing F8 as DOS starts steps through CONFIG.SYS and AUTOEXEC.BAT one line at a time, asking whether to execute each - which is how a troublesome driver is identified. F5 skips both files entirely.
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Which command is used to delete the directory and all its contents in one step?
Answer: C
Correct answer: DELTREE
DELTREE removes a directory together with everything inside it - files, subdirectories and their contents - in a single command. RD refuses unless the directory is already empty, so without DELTREE the tree must be emptied from the bottom up.
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Which internal DOS command clears the screen and places the DOS prompt in the upper left corner of the screen?
Answer: A
Correct answer: cls
CLS clears the screen and returns the cursor, and with it the prompt, to the top left corner. It is an internal command, so it is always available.
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After searching the current directory where does command.com search next?
Answer: D
Correct answer: The Path Statement
If the program is not in the current directory, COMMAND.COM searches the directories named in the PATH, in the order listed, and reports “Bad command or file name” if it reaches the end without finding it. PATH is normally set in AUTOEXEC.BAT.
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To view any currently running Terminate Stay Resident (TSR's) programs you could type:
Answer: B
Correct answer: MEM
MEM reports memory usage and, with a switch, lists the resident programs occupying it.
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Which DOS command is used to remove and scan memory and disk from viruses?
Answer: A
Correct answer: MSAV
MSAV - Microsoft Anti-Virus, supplied with DOS 6 - scans memory and disk for known viruses and removes what it finds. VSAFE is its resident companion that watches continuously, while SCANDISK and DEFRAG deal with file system errors and fragmentation.
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To conserve battery power on your laptop computer. What DOS v6.x command should you use?
Answer: B
Correct answer: Power.exe
POWER.EXE, supplied with DOS 6, conserves battery power by halting the processor whenever no application or device is active, cooperating with the machine’s APM firmware. It is loaded as a device driver from CONFIG.SYS.
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The Fdisk command in DOS _____ .
Answer: A
Correct answer: Partitions the hard drive for use
FDISK creates, deletes and displays the partitions of a hard disk and marks one active for booting. It divides the drive; each partition must then be formatted separately before it can hold files.
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