CTS · Week 12 — Milestone — Practice Exam 3

CTS Prep · Week 12 of 16

Course: CTS — Audiovisual & IT Systems · AVIXA Ch. 13–17 · Milestone

Three phases down. This block covered the work that happens before and during a build: reading a room's acoustics and lighting, writing a scope stakeholders can approve, designing the system on paper, and physically building it. The final phase covers what happens after handoff — running, maintaining, and troubleshooting the system for years afterward.

Practice Questions

What's the difference between reverberation time and an NC rating, and what does each measure?
Show answer
Reverberation time (RT60) measures how long sound persists/decays in a space; an NC rating measures background noise level, typically from HVAC — both affect speech intelligibility but from different causes.
Why is a change order the correct way to handle a stakeholder's mid-project request, rather than just accommodating it?
Show answer
It formally documents the cost, schedule, and scope impact of the change, protecting both parties and preventing uncontrolled scope creep.
What's the purpose of a signal flow diagram in the design phase?
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It maps every source, processor, and destination in a system and how signals move between them, serving as the technical blueprint for both integration and later troubleshooting.
Why does cable management matter beyond appearance?
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Properly labeled, routed, and slack-managed cabling makes a system serviceable and diagnosable by technicians (including ones who didn't do the original install) years later.
What does commissioning add that simply confirming “it works” does not?
Show answer
A documented baseline of correct behavior, tested systematically against the original design spec, which future troubleshooting can be measured against.

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