Which of the following items changes the encryption key on a users session after a set period of time?

________ errors are the result of a syntactically correct formula but logically incorrect construction, which produces inaccurate results

Fill in the blank(s) with correct word

_____ is a method of transferring large media files over the Internet so that the data stream of voice and pictures plays more or less continuously as the file is being downloaded.

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