What is the order in which Command.Com searches for programs to execute?
Answer: C
Correct answer: COM, EXE, BAT
Given a name with no extension, COMMAND.COM looks for .COM first, then .EXE, then .BAT, in each directory of the search path in turn. So a .COM file shadows an .EXE of the same name in the same directory.
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While working with MS-DOS, which command will you use to transfer a specific file from one disk to another?
Answer: A
Correct answer: COPY
COPY takes a named file (or a group matched by wildcards) and writes it to another disk or directory. DISKCOPY duplicates a whole diskette track by track, RENAME only changes a name, and FORMAT erases the disk and prepares it for use.
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Which command is executed before the others when a computer is first turned on?
Answer: B
Correct answer: Device=c:\dos\himem.sys
HIMEM.SYS must be loaded before anything that uses memory above 1 MB, because it is the extended memory manager that hands that memory out - EMM386, SMARTDRV and DOS=HIGH all depend on it. It therefore comes first in CONFIG.SYS, which itself is read before AUTOEXEC.BAT.
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Where do you load the CD Rom drivers?
Answer: D
Correct answer: Config.sys
The hardware driver for a CD-ROM drive is a .SYS file loaded by a DEVICE= line in CONFIG.SYS. MSCDEX.EXE, which gives the drive its letter and its file system, is run afterwards from AUTOEXEC.BAT.
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Which best describes a fragmented hard drive?
Answer: D
Correct answer: Files are not stored in consecutive clusters
Fragmentation is a matter of layout, not of damage: as files are created and deleted, a new file is written into whatever gaps exist, so its clusters end up scattered and the head must seek between them.
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Which of the following represents a correct sequence for the boot process on a DOS machine?
Answer: B
Correct answer: CONFIG.SYS, AUTOEXEC.BAT
DOS reads CONFIG.SYS first, loading the device drivers and setting FILES, BUFFERS and the rest, then loads COMMAND.COM, which runs AUTOEXEC.BAT. The order matters: drivers must be in place before the commands that use them are executed.
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When you create a subdirectory within a directory, the process is known as _____
Answer: D
Correct answer: nesting
Putting a directory inside another is nesting, and it is what makes the file system a tree rather than a flat list - each level containing files and further directories, addressed by the path that names the branch.
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The COPY command of MS-DOS, is used to:
Answer: D
Correct answer: All of the above
COPY does all three: it copies files from one disk to another, it copies within the same disk or directory when a new name is given, and with the + operator it concatenates two or more files into one. All are ordinary uses of the command.
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Which of the following filename extension suggests that the file is a backup copy of another file?
Answer: A
Correct answer: BAK
The extension .BAK marks a backup copy, written automatically by many programs before they overwrite the original, so the previous version can be recovered. TXT holds text, COM an executable, and BAS a BASIC source file.
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While working with MS-DOS, which command is used to compare the disk in drive A with the disk in drive B, specifying to compare only first side of each disk, and only the first 8 sectors of each track?
Answer: B
Correct answer: DISKCOMP A: B:/1/8
DISKCOMP compares two diskettes track by track. The /1 switch restricts the comparison to the first side of each disk and /8 to the first eight sectors of each track, so both switches are needed.
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