At the command prompt, type pwd $,$ press Enter, and ensure $/$root is displayed showing that you are in the root user$$s home folder. At the command prompt, type ls $.$ How many files with a name beginning with the word $$sample$$ exist in $/$root$?$

$3$

At the command prompt, type ls $*$ and press Enter. What is listed and why?

$4$

At the command prompt, type ls sample$*$ and press Enter. What is listed?

$5$

At the command prompt, type ls sample? and press Enter. What is listed and why?