Ren *.doc *.txt
Ren *.txt *.doc
Ren file.doc file.txt
Ren a: *.doc *.txt
Answer is Right!
Answer is Wrong!
The correct answer is A. Ren .doc .txt.
The Ren command is used to rename files. The asterisk () is a wildcard character that matches any number of characters. So, the command Ren .doc *.txt will rename all files that end in .doc to .txt.
Option B would rename all files that end in .txt to .doc. This is not what is asked for in the question.
Option C would rename the file file.doc to file.txt. This is not what is asked for in the question.
Option D would rename all files on the A: drive that end in .doc to .txt. This is not what is asked for in the question.