Because of their linear structure, stacks can only be implemented using linked structures.

Which of the following is not true when delivering a presentation?

A) When practicing without an audience, it is not necessary to practice talking out loud to an empty room. B) It is a good idea to enlist a few people to watch a practice session and ask for their honest feedback. C) Once you have completed the slides for the presentation, you should practice using them. D) Practice by projecting the presentation with the actual equipment you will use, if possible, and practice using the speaker notes, advancing the slides, and looking out into the imaginary audience.

The ________ is a mechanical device that can be attached to a specific telephone line at a telephone office

Fill in the blank(s) with correct word