AVIXA CTS Professional AV Design, Installation, and
Troubleshooting Practice Test
1. What is the BEST way to determine how reverberant a space is?
a. Clap your hands and listen for an echo
b. Use an RT60 meter
c. Use a dB SPL meter
d. Ask the client for feedback
Answer: b. Use an RT60 meter
Explanation: Reverberation is scientifically measured using RT60, which calculates the
time it takes for sound to decay by 60 dB. This provides an accurate and standardized
measurement of room acoustics. Clap tests are subjective and unreliable. Therefore,
RT60 meters are the professional standard.
2. The correct time to discuss visible finishes for wall plates, surface mount speakers, and
wall mounted screen casings is during the:
a. Installation phase
b. Ordering phase
c. Site survey
d. Contract award
Answer: c. Site survey
Explanation: Finishes and aesthetics should be discussed early to align client
expectations. The site survey allows evaluation of environment and client preferences.
Waiting until installation or ordering can lead to costly changes. Early planning ensures
design consistency.
3. An engineer measures 55 dB SPL A-weighted ambient noise in an empty room. How
should they proceed?
a. Do nothing, level is acceptable
b. Add more loudspeakers
c. Add voice lift to the system proposal
d. Speak with the client only
Answer: c. Add voice lift to the system proposal
Explanation: A 55 dB SPL ambient noise level is relatively high for conferencing spaces.
This may reduce speech intelligibility. Voice lift helps reinforce speech evenly in noisy
environments. It is the most appropriate system response.
4. A client needs videoconferencing for high-level private meetings. Which space type
should be ruled out?
a. Boardroom
b. Conference room
c. Divisible room
d. Classroom
Answer: c. Divisible room
Explanation: Divisible rooms are designed for flexible partitioning and shared use. This
, compromises acoustic isolation and privacy. High-level meetings require controlled
environments. Therefore, divisible rooms are unsuitable.
5. Which phase comes immediately after the Program Phase?
a. Design Phase
b. Installation Phase
c. Verification Phase
d. Documentation Phase
Answer: a. Design Phase
Explanation: The Program Phase defines requirements and user needs. The next step is
translating those needs into technical design. This is done during the Design Phase. It
bridges planning and implementation.
6. Which is NOT included in a program report?
a. Equipment list
b. Overview of programming process
c. Survey participants
d. Needs analysis summary
Answer: a. Equipment list
Explanation: A program report focuses on needs and requirements, not detailed technical
specifications. Equipment lists belong to the design phase. The report emphasizes scope
and intent rather than procurement.
7. What should an executive summary include?
a. Wiring diagrams
b. Programming code
c. Overview of programming process and surveyed participants
d. Full equipment list
Answer: c. Overview of programming process and surveyed participants
Explanation: Executive summaries provide high-level insights for decision-makers. They
explain how information was gathered and analyzed. Technical detail is minimized. The
focus is clarity and context.
8. Which system is used to show colors on a video display?
a. Subtractive system
b. Additive color system
c. CMYK system
d. Monochrome system
Answer: b. Additive color system
Explanation: Displays generate color using light emission. Red, green, and blue combine
to form all visible colors. This is known as additive color mixing and is standard for
screens.
9. An installed audio system should be at least ____ above ambient noise.
a. -10 dB
b. 0 dB
c. +10 dB
d. +25 dB
Answer: d. +25 dB
Explanation: To ensure speech clarity, audio must significantly exceed ambient noise. A
, +25 dB margin ensures intelligibility. Lower margins reduce comprehension. This is a
standard AV design guideline.
10. A device is controlled using the pictured cable. What is the most likely method?
a. HDMI
b. USB
c. RS-232
d. Ethernet
Answer: c. RS-232
Explanation: RS-232 is commonly used for serial device control in AV systems. It
supports simple command-based communication. Many legacy AV devices still rely on it
for reliable control.
11. Minimum load safety rating for AV mounting equipment is:
a. 3:1
b. 5:1
c. 8:1
d. 10:1
Answer: b. 5:1
Explanation: A 5:1 safety factor ensures secure mounting under load conditions. It
accounts for dynamic forces and safety margins. This is industry standard practice in AV
installations.
12. Best time to update firmware during maintenance is:
a. Monday morning
b. During live events
c. Friday afternoons
d. Before installation
Answer: c. Friday afternoons
Explanation: Updating firmware late in the week allows time for troubleshooting. It
minimizes disruption to scheduled events. Support resources are also more available.
This is standard maintenance practice.
13. Display brightness controls adjust which level?
a. White balance
b. Contrast ratio
c. Black level
d. Gamma correction
Answer: c. Black level
Explanation: Brightness controls affect dark image detail. Adjusting black levels changes
shadow visibility. It does not affect peak brightness. It is essential for proper calibration.
14. What tool is used to verify contrast ratio?
a. Multimeter
b. Spot photometer
c. Oscilloscope
d. SPL meter
Answer: b. Spot photometer
Explanation: A spot photometer measures light intensity precisely. It helps evaluate
display contrast performance. Other tools cannot measure luminance accurately. It is
standard for display calibration.
Troubleshooting Practice Test
1. What is the BEST way to determine how reverberant a space is?
a. Clap your hands and listen for an echo
b. Use an RT60 meter
c. Use a dB SPL meter
d. Ask the client for feedback
Answer: b. Use an RT60 meter
Explanation: Reverberation is scientifically measured using RT60, which calculates the
time it takes for sound to decay by 60 dB. This provides an accurate and standardized
measurement of room acoustics. Clap tests are subjective and unreliable. Therefore,
RT60 meters are the professional standard.
2. The correct time to discuss visible finishes for wall plates, surface mount speakers, and
wall mounted screen casings is during the:
a. Installation phase
b. Ordering phase
c. Site survey
d. Contract award
Answer: c. Site survey
Explanation: Finishes and aesthetics should be discussed early to align client
expectations. The site survey allows evaluation of environment and client preferences.
Waiting until installation or ordering can lead to costly changes. Early planning ensures
design consistency.
3. An engineer measures 55 dB SPL A-weighted ambient noise in an empty room. How
should they proceed?
a. Do nothing, level is acceptable
b. Add more loudspeakers
c. Add voice lift to the system proposal
d. Speak with the client only
Answer: c. Add voice lift to the system proposal
Explanation: A 55 dB SPL ambient noise level is relatively high for conferencing spaces.
This may reduce speech intelligibility. Voice lift helps reinforce speech evenly in noisy
environments. It is the most appropriate system response.
4. A client needs videoconferencing for high-level private meetings. Which space type
should be ruled out?
a. Boardroom
b. Conference room
c. Divisible room
d. Classroom
Answer: c. Divisible room
Explanation: Divisible rooms are designed for flexible partitioning and shared use. This
, compromises acoustic isolation and privacy. High-level meetings require controlled
environments. Therefore, divisible rooms are unsuitable.
5. Which phase comes immediately after the Program Phase?
a. Design Phase
b. Installation Phase
c. Verification Phase
d. Documentation Phase
Answer: a. Design Phase
Explanation: The Program Phase defines requirements and user needs. The next step is
translating those needs into technical design. This is done during the Design Phase. It
bridges planning and implementation.
6. Which is NOT included in a program report?
a. Equipment list
b. Overview of programming process
c. Survey participants
d. Needs analysis summary
Answer: a. Equipment list
Explanation: A program report focuses on needs and requirements, not detailed technical
specifications. Equipment lists belong to the design phase. The report emphasizes scope
and intent rather than procurement.
7. What should an executive summary include?
a. Wiring diagrams
b. Programming code
c. Overview of programming process and surveyed participants
d. Full equipment list
Answer: c. Overview of programming process and surveyed participants
Explanation: Executive summaries provide high-level insights for decision-makers. They
explain how information was gathered and analyzed. Technical detail is minimized. The
focus is clarity and context.
8. Which system is used to show colors on a video display?
a. Subtractive system
b. Additive color system
c. CMYK system
d. Monochrome system
Answer: b. Additive color system
Explanation: Displays generate color using light emission. Red, green, and blue combine
to form all visible colors. This is known as additive color mixing and is standard for
screens.
9. An installed audio system should be at least ____ above ambient noise.
a. -10 dB
b. 0 dB
c. +10 dB
d. +25 dB
Answer: d. +25 dB
Explanation: To ensure speech clarity, audio must significantly exceed ambient noise. A
, +25 dB margin ensures intelligibility. Lower margins reduce comprehension. This is a
standard AV design guideline.
10. A device is controlled using the pictured cable. What is the most likely method?
a. HDMI
b. USB
c. RS-232
d. Ethernet
Answer: c. RS-232
Explanation: RS-232 is commonly used for serial device control in AV systems. It
supports simple command-based communication. Many legacy AV devices still rely on it
for reliable control.
11. Minimum load safety rating for AV mounting equipment is:
a. 3:1
b. 5:1
c. 8:1
d. 10:1
Answer: b. 5:1
Explanation: A 5:1 safety factor ensures secure mounting under load conditions. It
accounts for dynamic forces and safety margins. This is industry standard practice in AV
installations.
12. Best time to update firmware during maintenance is:
a. Monday morning
b. During live events
c. Friday afternoons
d. Before installation
Answer: c. Friday afternoons
Explanation: Updating firmware late in the week allows time for troubleshooting. It
minimizes disruption to scheduled events. Support resources are also more available.
This is standard maintenance practice.
13. Display brightness controls adjust which level?
a. White balance
b. Contrast ratio
c. Black level
d. Gamma correction
Answer: c. Black level
Explanation: Brightness controls affect dark image detail. Adjusting black levels changes
shadow visibility. It does not affect peak brightness. It is essential for proper calibration.
14. What tool is used to verify contrast ratio?
a. Multimeter
b. Spot photometer
c. Oscilloscope
d. SPL meter
Answer: b. Spot photometer
Explanation: A spot photometer measures light intensity precisely. It helps evaluate
display contrast performance. Other tools cannot measure luminance accurately. It is
standard for display calibration.
