When MS-DOS formats a disk, it automatically creates the main directory on your disk, which is called the _____ directory.
Answer: B
Correct answer: root
Formatting creates one directory on the disk, the root, written as \. Every other directory is created inside it or inside one of its descendants, so the root is the base of the whole tree.
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Which command will prevent subsequent changes to the file CBT.EXE?
Answer: B
Correct answer: ATTRIB + r CBT.EXE
ATTRIB +R sets the read-only attribute, after which the file cannot be changed or deleted until the attribute is cleared with ATTRIB -R. RENAME, COPY and MODE do not alter file attributes.
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Which command will be used to display a column file compression ratio for each file of Double spaced disk?
Answer: D
Correct answer: DIR /C (/C switch introduced in DOS version 6.00)
On a DoubleSpace drive, DIR /C adds a column showing the compression ratio achieved for each file, so it can be seen which files compress well and which do not. The switch was added with the compression software in DOS 6.
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The COPY command of MS-DOS, is used to:
Answer: D
Correct answer: All of the above
All three are ordinary uses of COPY: taking a file to another machine on a diskette, keeping a spare copy for safety or for the record, and copying from the hard disk to floppies. The command does not distinguish between the purposes.
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While working with MS-DOS, which command is used to copy all files from the currently logged drive and directory with the extension .TXT to the drive A?
Answer: B
Correct answer: COPY *.TXT A:
The source comes first and the destination second, so COPY *.TXT A: takes every .TXT file in the current directory and writes it to the diskette in drive A, keeping the same names.
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Which command of DOS is used to compare two floppy disks?
Answer: B
Correct answer: DISKCOMP
DISKCOMP compares two diskettes track by track and sector by sector, reporting where they differ - the usual check after a DISKCOPY. DISKCOPY duplicates a disk rather than comparing.
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Which command of DOS is used to sort the file in reverse order?
Answer: C
Correct answer: SORT/R < filename
The /R switch makes SORT order the lines in reverse, and the file is fed in with < because SORT is a filter that reads standard input.
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Which DOS command would allow you to redirect a printer?
Answer: C
Correct answer: Mode
MODE redirects printer output from a parallel port to a serial one - MODE LPT1=COM1 - and also sets the serial line’s baud rate, parity and stop bits. PRINT queues files for printing but does not redirect the port.
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DOS uses letters of the alphabet to designate disk drives. How many disk drives can DOS address (recognize)?
Answer: B
Correct answer: 26
Drives are named by letters, so DOS can address 26 of them, A to Z - A and B being reserved for diskette drives and C onwards for hard disks, network drives and CD-ROMs.
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The PATH command is usually found as part of your _____ file.
Answer: D
Correct answer: AUTOEXEC.BAT
PATH is an ordinary command executed by the command interpreter, so it belongs in AUTOEXEC.BAT, which COMMAND.COM runs at start-up. CONFIG.SYS is read earlier, before the interpreter exists, and takes only configuration statements.
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