Buttons, text boxes, and other tools that are found on a form are called ________

Why does a PKI need a means to cancel or invalidate certificates? Why is it not sufficient for the PKI to stop distributing a certificate after it becomes invalid?

What will be an ideal response?

You can use the ViewAnimationUtils class to create a circular reveal Animator object by calling the createCircularReveal method. The animation appears as a --------________ circular window that displays part of a UI element.

a. rotating b. shrinking c. expanding d. shrinking or expanding