CTS · Week 08 — Milestone — Practice Exam 2

CTS Prep · Week 08 of 16

Course: CTS — Audiovisual & IT Systems · AVIXA Ch. 8–12 · Milestone

Halfway point. Phase I (signals/audio/video/network) was the physical and electrical layer; Phase II (this block) was control, power, wireless, and the human/process side of scoping a project. Phase III, starting next week, moves into actually designing and building the system.

Practice Questions

What's the practical difference between a button doing nothing versus a button doing the wrong thing, in control-system troubleshooting?
Show answer
“Nothing” usually points to a connectivity problem (power, cable, IP address); “wrong thing” usually points to a programming/macro logic problem, since the system is clearly communicating.
Why does a ground loop cause an audible hum, and what's a common fix?
Show answer
A voltage difference between two ground points induces unwanted current into the audio signal path; fixing it typically means correcting the grounding scheme or inserting a ground-isolation transformer/DI box.
What does frequency coordination prevent when multiple wireless microphones are used in the same space?
Show answer
RF interference between the mics (and other nearby RF sources) that would otherwise cause dropouts or intermodulation noise.
Why is a site survey considered more reliable than a verbal description of a room when starting a design?
Show answer
A site survey physically documents actual current conditions (dimensions, obstructions, existing infrastructure) rather than relying on a stakeholder's possibly incomplete or inaccurate memory/description.
What accessibility-related system was introduced this phase, and why does it matter specifically for a courthouse?
Show answer
IR-based assistive listening; courts often have legal accessibility obligations to accommodate hearing-impaired jurors, witnesses, and the public.

↑ Course Hub ← Week 7 Week 9 →