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The measurement of color temperature is expressed in _____. - ANSWER-Kelvin What does a sightline study determine? - ANSWER-The most appropirate seating layout and screen position. In radio frequency transport, the program signal is added to a ____ signal before transportation. - ANSWER-Carrier Which of the following statements describes rear projection technology? - ANSWER- Rear projection displays provide better contrast and color saturation in high ambient light environments than front projection displays. Which of the following statements about automatic mixers in audio applicaitons is true?
- ANSWER-They are used for speech applications, such as meetings. A gate function automatically mutes all audio signals that ____. - ANSWER-Fall below a set threshold. A distribution amplifier is used to ____. - ANSWER-Split one input into multiple isolated outputs, each with the same signal level. What is a circuit's bandwidth? - ANSWER-The range of frequencies a circuit can detect. A string's vibration or loudspeaker cone's movement pushing air molecules forward demonstrates how sound waves are ____. - ANSWER-Generated What unit(s) are used for quantifying resistance and impedance? - ANSWER-Ohms are used for both resistance and impedance. Audio signals may be purposely delayed in sounds reinforcement applications in order to ensure that ____. - ANSWER-Sound will reach all listeners at the same time.
Which of the following statements accurately describes unidirectional control communications? - ANSWER-Unidirectional communication does not verify the receipt of commands. If the resolution of an image is increased, the signal bandwidth ____. - ANSWER- Increases If the color temperature is low, the light will appear to be more ____. - ANSWER-Red. What type of waves has the highest frequency in the range of the electromagnetic spectrum? - ANSWER-Ultraviolet If an electronic frequency falls outside of a circuit's bandwidth, that frequency will be ____. - ANSWER-Lost For a video display that requires detailed veiwing, the position of the frarthes viewer should be no more than ____ times the height of the display away from the screen. - ANSWER- A light source's color temperature refers to it's ____. - ANSWER-Tint If the brightness level of a display is too high, the black areas of the image will appear ____. - ANSWER-Gray RF wireless microphones typically allow the user to change ____ in order to avoid interference from outside sources or other wireless microphones. - ANSWER- Frequency What type of audio processor passes very little or no additional level when the input exceeds the threshold level? - ANSWER-Limiter What is the purpose of a wall wash in three-point lighting system? - ANSWER-It lights the background. Which of the following is a role of the DHCP server? - ANSWER-Ensuring that no two devices receive the same IP address. In Ohm's Law, voltage may be represented as V for volts. What other variable can represent voltage? - ANSWER-Electromotive Force
What type of microphone polar pattern picks up sound primarily from the front and some from the rear, but rejects sounds from the sides? - ANSWER-Cardioid A ____ connects different types of networks. - ANSWER-Bridge The quality of digital recordings will _____ as more copies are made. - ANSWER- Remain the same. What is the primary reason for electrical codes and regulations? - ANSWER-To safeguard persons and property. Lower sensitivity microphones may be used in order to ____. - ANSWER-Capture high sound pressure level sources, such as a singer. As the gain of a screen increases, ____ increases. - ANSWER-Ambient light rejection. Because digital video is transported as a component signal, it is ____ than composite analog video. - ANSWER-Higher quality. How many cables do component videos require to carry signal? - ANSWER-Three The relationship between current and resistance is always ____. - ANSWER-Inversely proportional What is the definition of "frequency"? - ANSWER-The cycle when molecules move from rest through compression to rest to rarefraction. The ____ model is a guide that assists with conforming nextwork communications and their processes to standards. - ANSWER-OSI What is an advantage of lossless compression? - ANSWER-Files can be opened and recompressed repeatedly without data loss. A signal transmitted at the proper level will ____ over distance. - ANSWER-Decrease in signal strength or amplitude. Which of the following statements describes a DC circuit? - ANSWER-Current in a DC circuit flows in one direction only. Light entering the eye first passes through the ____. - ANSWER-Cornea
The area of illumination increases four times when the distance between the light source and the illumiated area is ____. - ANSWER-Doubled When designers use dark material to darken a room, they are using light's quality of ____. - ANSWER-Absorption What does bit depth determine? - ANSWER-The number of states you have to define a value. What type of environment is most likely to produce acoustic reverberations? - ANSWER-Large rooms with many hard surfaces. Which is usually the brightest light on a subject in a three-point lighting system? - ANSWER-Fill A ____ server keeps track of all the equipment that is on your network and assigns the equipment names so you can easily connect to them. - ANSWER-DNS What is a mirror-like image of sound energy that reflects most energy back in a single direction? - ANSWER-Specular Reflection Which type of microphone requires phantom power to operate? - ANSWER-condenser What is a factor for determining the speed of a Wi-Fi connection? - ANSWER-RF signal strength What is an advantage for using IPv6 over IPv4? - ANSWER-IPv6 has more available addresses than IPv4. If voltage stays the same and current increases, resistance ____. - ANSWER- Decreases What is the first step in the AV system creation process? - ANSWER-Wants and needs analysis A diversity receiver uses a pair of antennas to ____. - ANSWER-Select the strongest or most direct RF signal over reflections of the same signal. Which audio signal has a nominal level of 1 volt? - ANSWER-Professional Line Level
What does focal length determine? - ANSWER-How much of a scene is visible to the lense. A cable's bend radius is best defined as the ____. - ANSWER-Amount a conductor can be bent before the signal is compromised or the conductor is damaged. What is a mix-minus system? - ANSWER-A sound reinforcement system where each listener hears a mix of the micrphone signals, minus the closest micrphone(s). The Inverse Square Law states that every time the distance ____ from the source of the energy, the energy spreads to cover ____ the previous area. - ANSWER-Doubles; four times The more accurate means to estimate dimensions of a commercial space during a site inspection would be to ____? - ANSWER-Count the number of ceiling tiles in a drop tile installation A client requires a new boardroom. The sales person and engineer are sent to the premises to measure the facility and talk to the client. At this stage they should be performing a ____. - ANSWER-Needs Analysis What type of interview questions will help a client become interested in a new or unfamiliar technology? - ANSWER-Leading Questions As a courtesy before leaving the final needs analysis meeting, the customer should be advised about: - ANSWER-When to expect the proposal When establishing initial contact with a client, try to develop a relationship early on with the: - ANSWER-Stakeholders The process of creating an AV solution begins with: - ANSWER-Preforming a needs analysis Which of the following is defined as highly efficient? - ANSWER-LED Lamp To maximize the quality of projected images in a presentation you should ensure: - ANSWER-The ambient light is controlled in the presentation area Using best practices, determine maximum viewer distance by multiplying the text height by: - ANSWER-
Sight lines for audience viewing is a given presentation space can be improved by: - ANSWER-Providing a sloped, or stepped, seating arrangement The correct time to discuss visible finishes for wall plates, surface mount speakers, and wall mounted screen casings is during the: - ANSWER-Site Survey During the site survey, the room appears to have a lot of reverberation present. What treatment could be recommended to improve the sound in the room? - ANSWER-Use more softer, diffuse surfaces After presenting a proposal, what is the correct plan of action for following up with the client? - ANSWER-Regularly, until a decision is made AV professionals determine the end user's needs by examining three things: the required applications, the tasks, and the: - ANSWER-functions to support the application When working with a client to design an AV solution for a new conference center, the client requests a detailed budget for the equipment and installation. What phase is the project in? - ANSWER-Design Phase During discussions with an Architect, ____ may be useful when reviewing drawings. - ANSWER-Scale Rule The HDTV aspect ratio is equal to which of the following? - ANSWER-1.78: Which system is used to show colors in a display? - ANSWER-Additive color system Please select the appropriate resolution for common 4kx2k resolution. - ANSWER- x 2160 Please select the appropriate resolution for SXGA - ANSWER-1280 x 1024 The foundation of good customer service is built on: - ANSWER-Good customer relationships When collaborating with another vendor on a project, it is advisable to - ANSWER- Inform the client that the project manager is in charge.
When bidding on a project, who would be most concern about the pricing discounts in the estimate? - ANSWER-Purchaser The developer, move consultant, and building management agency are all members of which team? - ANSWER-The Management Team Which phase comes first in a project? - ANSWER-The Program Phase The architect, acoustical consultant, life safety consultant, and the electrical consultant are all members of which team? - ANSWER-The Design Team On a new construction project, there is a need to verify that power has been installed in the correct place. Who should be contacted to verify this information? - ANSWER- Project Manager A project manager is in the middle of a 9 week project, the best method for evaluating job progress is to determine the - ANSWER-Percentage of tasks completed Which of these interview questions are illegal? - ANSWER-Do you attend church around here? A dimmer rack with a constant load capability is power twenty four incandescent lights during a stage production. The dimmer rack is running on a steady 230VAC supply and averaging approximately 98 amps draw. Suddenly the line voltage drops to 211VAC. Calculate the expected amperage draw. - ANSWER-90 amps A display has a problem with the intensity and hue color information. Which tool should be used to check this? - ANSWER-Vectorscope When terminating a Cat 5e cable with an 8P8C (RJ-45) connector, it is best practice to untwist each wire pair: - ANSWER-As little as possible to get each wire to enter the proper channel in the connector. There is concern about the noise level in an AV rack room. What weight setting on the SPL meter should be used to demonstrate that the noise level doesn't require hearing protection at all times? - ANSWER-A Weighted What should be done if a touch screen control panel is reportedly locked up, frozen or otherwise reported to be not functioning? - ANSWER-Check all connectors; confirm the screen is not in power saver mode
A camera was installed about 180' from its 1.5A 12v power supply, the power supply is dead, and needs replacing. Assuming that the camera can operate normally within +/- 10% of the power supply voltage, if the 18 gauge wire was run initially and an almost 3v drop is present, what is the correct action? - ANSWER-Re-locate the power supply near the camera Oscilloscope - ANSWER-Plots signal amplitude and timing Waveform Monitor - ANSWER-Measures amplitude and timing of luminance and color signals Vectorscope - ANSWER-Measures amplitude, hue, and phase of video signals (color is represented by a vector's direction and amplitude. 1 Meter = ____ - ANSWER-3.28 Feet 1 Inch = ____ - ANSWER-2.54 Centimeters OSI Layer 1 - Physical Layer - ANSWER-Covers cabling and other connection mediums. Defines relationship between device and physical means of sending data over network. Defines optical, electrical, and mechanical characteristics. OSI Layer 2 - Data Link Layer - ANSWER-Includes Ethernet standard and unique hardware addresses. Defines procedures for operating the comm links, encapsulates data, and detects and corrects packet-transmission errors. OSI Layer 3 - Network Layer - ANSWER-IP comes into play. Determines how data is transferred, routes packets according to network device addresses, and provides flow and congestion control to prevent network resource depletion. OSI Layer 4 - Transport Layer - ANSWER-Governs the transfer of data. Provides packet delivery, connection-oriented or connection-less packet delivery, and provides flow and congestion control to prevent network resource depletion. OSI Layer 5 - Session Layer - ANSWER-1st Upper layer and concerns the data itself, ensuring data passes properly through the network. Manages user sessions and dialogues, controls the establishment and termination of connections, and reports upper-layer problems. OSI Layer 6 - Presentation Layer - ANSWER-Unpackages data for use by application layer, makes data format differences between dissimilar systems so they can
NIC - ANSWER-Not in contract NTS - ANSWER-Not to scale OC - ANSWER-on center OD - ANSWER-Outer diameter OFCI - ANSWER-Owner furnished, contractor installed OFE - ANSWER-Owner furnished equipment OFOI - ANSWER-Owner furnished, owner installed PM - ANSWER-Project Manager RCP - ANSWER-Reflected Ceiling Plan SECT - ANSWER-Section VIF - ANSWER-Verify in field
