1. What is the main reason we should declare menus declaratively (in xml)?
It is easier
It supports the MVC paradigm better than declaring them in code

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2. Which callback is NOT always needed when dealing with menus?
onCreateOptionsMenu
onOptionItemSelected
onPrepareOptionsMenu

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3. Why do we include a title on each menu item, even if we have an icon for it? (Choose all that apply.)
If there is no room for the icon, the title will appear in the overflow menu
If you long press the icon, the title will appear as a hint.

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4. What does setDisplayHomeAsUpEnabled do?
It lets you specify which activity should be launched if you press the home caret in the ActionBar
It lets you specify which activity should be launched if you press the back button

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