As shown in the accompanying figure, a typical ____ displays the name or a description of the command.

Amazon SWF is designed to help users...

A. Design graphical user interface interactions B. Manage user identification and authorization C. Store Web content D. Coordinate synchronous and asynchronous tasks which are distributed and fault tolerant.

A change in one bit of the plaintext or one bit of the key should produce a change in many bits of the ciphertext. This is referred to as the __________ effect. ?

Fill in the blank(s) with the appropriate word(s).