Which of the following layouts is most commonly used when introducing the topic of the presentation and the speaker?

Which of the following is not a queue operation?

a) enqueue b) dequeue c) first d) isEmpty e) all of the above are queue operations

A(n) ___ uses command words and grammar based on human languages to provide what computer scientists call a level of abstraction that hides machine language.

A. low-level language B. high-level language C. compiler D. interpreter