The rmdir utility removes an empty directory. Show that rmdir cannot remove the two directory while it holds a file.

The hash algorithm involves repeated use of a __________ function, f, that takes two inputs (an n-bit input and a b-bit block) and produces an n-bit output.

Fill in the blank(s) with the appropriate word(s).

In the command ‘Get-Help Get-Date -example', the word -example is called a _______.

Fill in the blank(s) with the appropriate word(s).