A common technique for mobile websites is to hide navigation menus but to indicate their presence with a(n) _________, which is a symbol usually represented as three horizontal lines.?

The new default shutdown option for Windows is the ________ boot

A) hybrid B) hibernate C) indexed D) suspended

Answer the following statements true (T) or false (F)

1) A concrete class that implements an interface must define all methods and properties of that interface. 2) An interface can not provide properties with get and set accessors. 3) class that implements an interface may not act as a base class for other classes. 4) An interface reference may invoke only the methods that the interface declares.