An email client says a digital signature is invalid and the sender cannot be verified. The recipient is concerned with which of the following concepts?

When you create a class that uses an interface, you include the keyword extends.

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

A(n) ____________________ is the end result of an analysis project that recommends purchase, modification, upgrade, or construction of new technology.

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