4. After trying to unload a TSR, you get an error message saying that other TSRs were loaded after the one you tried to remove. Which of the following commands could you use to see the current load order?
8. After upgrading your computer to a new DOS version, an older application displays the error message "Incorrect DOS version". What should you do to run this application?
9. The Octal number to be given alogn with chmod command to make a file readable, writable and executable to the owner, readable and executable to group and others is: