CTS General Technology 4 — Questions and Answers
Question 1: Which display technology uses organic compounds that emit light when an electric current is applied?
- LCD
- OLED (Correct answer)
- DLP
- CRT
Correct answer: OLED
OLED (Organic Light-Emitting Diode) uses organic compounds that produce light directly, eliminating the need for a backlight.
Question 2: In AV system design, what does 'latency' refer to?
- Signal amplitude loss over distance
- The delay between input and output of a signal (Correct answer)
- Frequency response variation
- Impedance mismatch between devices
Correct answer: The delay between input and output of a signal
Latency is the time delay between when a signal is sent and when it is received or processed, critical in live event and video conferencing setups.
Question 3: What is the primary purpose of a signal extender in an AV installation?
- To amplify audio output levels
- To transmit AV signals beyond the native cable length limit (Correct answer)
- To convert analog signals to digital
- To reduce electromagnetic interference
Correct answer: To transmit AV signals beyond the native cable length limit
Signal extenders allow AV signals to travel beyond the standard cable distance limits, often using HDBaseT, fiber, or IP-based transmission.
Question 4: Which color model is used for light-emitting displays such as monitors and projectors?
- CMYK
- RGB (Correct answer)
- HSL
- Pantone
Correct answer: RGB
RGB (Red, Green, Blue) is an additive color model used by displays that emit light, combining colors to produce white at full intensity.
Question 5: What does the term 'gain' mean in the context of a projector screen?
- The screen's ability to reject ambient light
- The ratio of light reflected compared to a standard reference white (Correct answer)
- The contrast ratio of the projected image
- The diagonal measurement of the screen
Correct answer: The ratio of light reflected compared to a standard reference white
Screen gain is a measure of reflectivity compared to a standard magnesium carbonate white reference; a gain above 1.0 reflects more light toward the viewer.
Question 6: In networking, what does 'bandwidth' measure?
- The physical width of a cable
- The maximum data transfer rate of a network connection (Correct answer)
- The number of devices on a network
- The signal frequency of a wireless channel
Correct answer: The maximum data transfer rate of a network connection
Bandwidth refers to the maximum rate at which data can be transmitted over a network connection, typically measured in Mbps or Gbps.
Question 7: Which standard governs the interoperability of control systems in AV environments through a common API?
- HDCP 2.2
- EDID
- REST API over TCP/IP (Correct answer)
- AVIXA Q-SYS
Correct answer: REST API over TCP/IP
REST APIs over TCP/IP have become the dominant standard for AV control system interoperability, allowing devices from different manufacturers to communicate.
CTS General Technology 4
Which display technology uses organic compounds that emit light when an electric current is applied?