Disk Operating System (DOS) Question: Download DOS (Disk Operating System) PDF

While working with MS-DOS which command is used to combine file1 plus file2 into new file named file3?

a. Copy file3 file1+file2
b. Copy file1+file2 file3
c. Copy file1+file2+file3
d. Copy file2 file1+file3

b. Copy file1+file2 file3

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While working with MS-DOS which command is used to change the extension of all filenames ending with .txt to .doc? a. Ren .doc .txt b. Ren .txt .doc c. Ren file.doc file.txt d. Ren a: .doc .txt	While working with which command is used to copy all files from the currently logged drive and directory with the extension .txt to the drive a: a. Copy a. .txt b. Copy .txt a: c. Copy .txt c: d. Copy .txt all.txt