__________ modes of operation have been standardized by NIST for use with symmetric block ciphers such as DES and AES.

You can declare that an interface is a functional interface by preceding it with the @FunctionalInterface annotation. The compiler will then ensure that the interface contains ________; otherwise,

it’ll generate a compilation error. a. no abstract methods b. all abstract methods c. only one abstract method d. one or more abstract methods.

To add clip art, click the _____________ icon.

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