101⟩ To make file in MS Dos we need command a. Copy b. Copy con c. MD d. Make File
b. Copy con
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“DOS related Frequently Asked Questions by expert members with experience in Disk Operating System. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts”
216 DOS (Disk Operating System) Questions And Answers
102⟩ If you need to duplicate the entire disk, which command will you use? a. Copy b. Diskcopy c. Chkdsk d. Format
b. Diskcopy
Explanation:
Diskcopy is used to perform track-by-track copy of a disk into another. Copy command copies selected files; chkdsk and format commands are not for copying purpose.
103⟩ Each time you turn on your computer, it will check on the control file a. Command.com, io.sys b. Command.com, date.com, dir.com c. Command.com, io.sys, msdos.sys d. Chkdsk.exe
c. command.com, io.sys, msdos.sys
Explanation:
command.com, io.sys and msdos.sys are the essential system files of MS-Dos. Loading these files from disk into memory is known as booting. Booting is the process of preparing your computer to work.
104⟩ Which of the following extensions suggest that the file is a backup copy? a. Bak b. Bas c. Com d. Txt
a. Bak
Explanation:
Bak extension is commonly used to store backup copies of files so that it can be restored later when original file is corrupted or deleted. Bas extension indicates the file is a BASIC program source file, com is command file and txt is plain text file.
105⟩ In MS-Dos 6.22, which part identifies the product uniquely. a. MS b. DOS c. Ms-DOS d. 6.22
d. 6.22
Explanation:
MS stands for Microsoft, DOS is the name of operating system Disk Operating System, 6.22 is the version number that identifies the product.
106⟩ In Ms-Dos what command you will use to display system date? a. Date command b. Ver command c. Disk command d. Format command
a. Date command
Explanation:
Ver command displays the version number of Dos. There is no command as Disk. Format command prepares a disk to be used with DOS. Thus Date is the command that lets you to display and/or change the system date.
107⟩ Which command lists the contents of current directory of a disk? a. Copy b. Tree c. Cd d. Dir
d. Dir
Explanation:
Dir command lists the directory of current location. It includes the files, subdirectories and some other system information. Tree command is used to list the directory structure in tree diagram; CD command to change directory and Copy command to copy a file into another.
108⟩ If you don't know the current time, which command will you use to display. a. Copy b. Ver c. Time d. Format
c. Time
Explanation:
Time command displays and allows you to change system time. TIME only displays the system time and TIME <time> is used to set new time as system time.
109⟩ Only filenames and extensions are to be displayed in wide format, which command you'll use? a. Dir/w b. Dir a c. Dir/s d. Dir/b
a. Dir/w
Explanation:
Dir/w only displays the file names and extensions excluding file created date/time, file size. Second option dir a: will list the contents of A drive (floppy drive), third dir/s lists current directory and its subdirectories too, dir/b displays bare format, that means, it just makes a list of files, no more information.
110⟩ Which command displays all the files having the same name but different extensions? a. Dir filename.* b. Dir filename.ext c. Dir *.sys d. Dir *.ext
a. Dir filename.*
111⟩ Which command should be used to display all files within the specified subordinate directory of the subdirectory? a. Dir pathname b. Dir pathnamepathname c. Dir / ch d. Dir pathnamefilename
b. Dir pathnamepathname
112⟩ Which command will be used to display a file within the specified directory of pathname? a. Dir pathname b. Dir pathnamepathname c. Dir/ch d. Dir pathnamefilename
d. Dir pathnamefilename
113⟩ Which command displays only file and directory names without size, date and time information? a. Dir/w b. Dir a c. Dir /b d. Dir /s
c. Dir /b
Explanation:
dir/b command barely lists the names of files and directories without any other information like size, date, time etc.
114⟩ Which command displays comma for thousand separating on file size while listing? a. Dir/w b. Dir/s c. Dir/b d. Dir/c
d. Dir/c
Explanation:
Using comma for separating thousand in file size is by default on. You can use dir/-c to remove comma from the listing. /C stands for comma.
115⟩ Which command is used to display all the files having the (.exe) extension but different filename? a. Dir filename.* b. Dir filename.ext c. Dir *.sys d. Dir *.ext
d. Dir *.ext
Explanation:
First two options are obviously wrong since specifying filename will list for that filename only. Since we need to list only with .ext extension fourth option is correct. Third option displays all files with sys extension.
116⟩ Which command is used to delete the directory that is empty? a. Del *.* b. RD c. Erase d. MD
b. RD
Explanation:
RD command or RMDIR commands can be used to remove a directory if it is empty. Del command and Erase commands are used to delete files not directories. MD creates a new directory and can't remove directory.
117⟩ Which command creates a directory or subdirectory? a. Dir b. Mkdir c. Md d. Both b and c
d. Both b and c
Explanation:
MK command and MKDIR both commands are equivalent and can be used to create subdirectories. Dir only lists directory but can't create.
118⟩ Which command displays the directory list including files in tree structure? a. Dir/s/f b. Tree/f c. Tree/s/f d. Dir/f
b. Tree/f
Explanation:
Tree command lists the directory structure in tree structure and /f switch of tree command includes the filenames in the structure.
119⟩ Which command displays current directory name or change from one to another? a. Chdir b. Cd c. Mkdir d. Both a and b
d. Both a and b
Explanation:
CD and CHDIR commands are equivalent and both used to change current working directory to another one. MKDIR creates a new directory and can't be used to change.
120⟩ An entire path name, consisting of several sub-directory names can contain upto a. 13 character b. 36 character c. 63 character d. 53 character
c. 63 character
