Where would you load the mouse driver mouse.sys?
Answer: A
Correct answer: config.sys
A driver ending in .SYS is loaded by a DEVICE= line in CONFIG.SYS, which DOS reads early in the boot before the command interpreter starts. The .COM form of the same driver would instead be run from AUTOEXEC.BAT.
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Filename extensions help identify certain files. What filename extension identifies command files?
Answer: A
Correct answer: COM
A .COM file is a command file: a program image loaded into a single 64 KB segment and run from its first byte, with no relocation header. .EXE holds larger programs, .BAT a list of commands, and .SYS a driver.
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While working with MS-DOS, which command is used to specify the size of the disk to format.
Answer: A
Correct answer: FORMAT/F : size
The /F:size switch tells FORMAT which capacity to format the diskette to - /F:720 or /F:1.44, for example - which is how a lower-capacity disk is formatted in a high-density drive.
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What command is used to reset a MODEM when using the "AT Command Set"?
Answer: B
Correct answer: ATZ
ATZ resets the modem to its stored profile. Every command in the set begins with the attention prefix AT.
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While working with MS-DOS, which command is used to force DOS to recheck all clusters when reformatting a disk?
Answer: D
Correct answer: FORMAT/C
The /C switch makes FORMAT re-test the clusters already marked bad, in case they were flagged in error or the fault was transient, instead of taking the existing marks on trust.
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The _____ switch instructs DOS to display the directory list in a wide format.
Answer: A
Correct answer: /W
The /W switch lists the names in several columns across the page, omitting the size, date and time, so a long directory fits on one screen. Directory names are shown in brackets to distinguish them from files.
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Which of the following applies to Internal DOS commands?
Answer: A
Correct answer: Internal commands can be run whenever the DOS prompt is displayed
Internal commands - DIR, COPY, CD, CLS, TYPE - are built into COMMAND.COM, which is already resident, so they are available at any prompt with no disk access and cannot be missing. External commands are separate files that must be found and loaded.
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Match the device driver HIMEM.SYS to its operation
Answer: B
Correct answer: Manages the use of extended memory
HIMEM.SYS is the extended memory manager: it arbitrates access to memory above 1 MB and provides the high memory area. EMM386 is the one that emulates expanded memory.
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What command can you add to the AUTOEXEC.BAT file so that your computer temporarily stops in the execution of the file before continuing?
Answer: A
Correct answer: Pause
PAUSE in a batch file stops and displays “Press any key to continue”, so the user can read what has scrolled past or change a disk before the file goes on. It is the only one of these that is a DOS command.
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While working with MS-DOS, which command is used to sort the file in ascending order?
Answer: B
Correct answer: SORT < filename
SORT is a filter: it reads from standard input and writes to standard output, so the file must be redirected into it with <. Writing SORT > filename would redirect its output and leave it waiting for input from the keyboard.
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