Which of the following commands is used to display the directory attributes rather than its contents?

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:

If you are to use [Control-c] as the interrupt key instead of [Del], then you will have to use

Which of the following is not a communication command.

Which command is used to remove a file?

Which symbol is used to separate more than one command in the same command line?