Directory Dun Laoghaire has several subdirectories. Each of these subdirectories has very ­sensitive information that should only be accessible to a single user. (a) What permissions would you give in...

Directory Dun Laoghaire has several subdirectories. Each of these subdirectories has very ­sensitive information that should only be accessible to a single user. (a) What permissions would you give in the top-level DunLaoghaire directory to the group all logged-in users if you do not want to change Allow inheritable permissions from parent to propagate to this object box default in subdirectories? (b) What would you then do in each subdirectory?