Which of the following should be used to add a layer of randomness to a password when encrypted?

When the magnetizable coating is applied to both sides of the platter the disk is then referred to as _________.

A. multiple sided B. substrate C. double sided D. all of the above

An overloaded operator class member function is convenient for:

A. comparing two objects of the same class. B. initializing variables in an object. C. ensuring that data hiding has been performed. D. adding two objects that are not related.