Disk Operating System (DOS) Question:
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While working with MS-DOS which command is used to copy all files with extension .txt into one file named all.txt?

a. Copy a: *.txt
b. Copy *.txt a:
c. Copy *.txt c:
d. Copy *.txt all.txt


d. Copy *.txt all.txt

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While working with MS-DOS, which command is used to rename a file named file1.doc to file2.doc from a different directory called dir1?

a. Ren2.doc dirfile1.doc
b. Ren file1.doc file2.doc
c. Ren .docdir.doc
d. Ren dir1file1.doc file2.doc
Which type of command in DOS needs additional files for their execution?

a. Internal commands
b. External commands
c. Batch commands
d. Redirectors