View Full AVIXA AVIXA-CTS Exam Dumps and Practice Test Dumps

 

Question 341

Which audio characteristic describes how widely a loudspeaker radiates sound?

1. Directivity
2. Sensitivity
3. Impedance
4. Headroom

Correct Answer: 1

Explanation:

Directivity describes how sound energy is distributed spatially by a loudspeaker. A highly directional loudspeaker concentrates sound within a narrower coverage area, while a wider-dispersion model spreads sound over a broader region. Understanding directivity is important when designing AV systems because speaker coverage should match the audience area while minimizing unwanted sound on reflective surfaces. Directivity can vary with frequency, so a speaker may not maintain identical coverage across its entire operating range. AV professionals consider manufacturer coverage information when positioning loudspeakers and determining the number and type required for a space.

Question 342

Which measurement is useful for evaluating background noise in a room?

1. Color temperature
2. Noise criterion
3. Throw ratio
4. Pixel density

Correct Answer: 2

Explanation:

Noise Criterion (NC) ratings are used to evaluate background noise levels in occupied spaces. They provide a standardized way to assess whether mechanical systems, ventilation equipment, and other ambient sources create excessive noise for the intended room function. Lower NC values generally correspond to quieter environments. This is especially relevant in conference rooms, classrooms, recording spaces, and presentation areas where background noise can interfere with speech or audio playback. An AV professional may consider the room’s NC target when evaluating acoustics and determining whether additional noise-control measures are needed.

Question 343

What is the main benefit of acoustic isolation between rooms?

1. Increased screen brightness
2. Lower equipment weight
3. Reduced sound transmission
4. Higher network throughput

Correct Answer: 3

Explanation:

Acoustic isolation reduces the transmission of sound from one space to another. It is particularly important when adjacent rooms have different activities, such as a meeting room next to a classroom or a presentation area beside a quiet office. Isolation can involve construction techniques, wall assemblies, doors, seals, floors, ceilings, and other architectural elements. Unlike acoustic absorption, which primarily controls reflections within a room, isolation addresses sound traveling between spaces. Proper isolation helps protect speech privacy and prevents external noise from interfering with AV presentations, conferencing, recording, or other activities.

Question 344

Which microphone characteristic indicates its resistance to handling loud sound levels?

1. Pickup angle
2. Self-noise
3. Maximum SPL
4. Cable capacitance

Correct Answer: 3

Explanation:

Maximum Sound Pressure Level (SPL) indicates the highest acoustic level a microphone can typically handle before distortion reaches a specified threshold. This specification is important when selecting microphones for loud sources such as amplified instruments, theatrical performances, or high-level sound reinforcement. A microphone with an inadequate maximum SPL rating may produce unwanted distortion when exposed to very loud signals. Maximum SPL should be considered alongside sensitivity, frequency response, pickup pattern, and application requirements. It does not indicate microphone directionality or its inherent noise level.

Question 345

What does an audio limiter primarily prevent?

1. Excessive signal peaks
2. Network addressing errors
3. Display synchronization
4. Cable polarity reversal

Correct Answer: 1

Explanation:

An audio limiter restricts excessive signal peaks from exceeding a selected level. It can help protect loudspeakers and downstream equipment while reducing the possibility of severe clipping caused by unexpectedly high audio levels. A limiter generally operates with a higher threshold than a compressor intended for broader dynamic control, depending on system configuration. In sound reinforcement systems, limiting can be particularly useful for maintaining safe operating levels when multiple sources or unpredictable program material are present. Properly configured limiting should protect the system without unnecessarily affecting normal audio dynamics.

Question 346

Which connector is commonly used for professional AES3 digital audio?

1. BNC only
2. XLR
3. RCA only
4. TRS only

Correct Answer: 2

Explanation:

AES3 is a professional digital audio interface commonly carried over balanced twisted-pair cable using XLR connectors. It can transport digital audio channels over a single connection and is widely associated with professional audio equipment. Although other physical implementations can carry AES3-compatible signals, the XLR connection is a familiar professional format. AV technicians should distinguish AES3 from analog balanced audio because the connector appearance can be similar while the signal type is different. Correct identification is important during installation, troubleshooting, and system commissioning.

Question 347

What does cable insertion loss describe?

1. Connector color
2. Signal reduction through the link
3. Cable jacket material
4. Rack mounting depth

Correct Answer: 2

Explanation:

Insertion loss describes the reduction in signal power that occurs when a component or transmission link is inserted into a signal path. In AV cabling, loss can result from cable length, connectors, splices, adapters, and other passive components. The effect becomes increasingly important when signals travel over longer distances or operate at higher frequencies. Excessive insertion loss can reduce signal quality and contribute to transmission failures. Technicians may use manufacturer specifications or appropriate test equipment to verify that the installed path remains within the acceptable loss budget for the signal being transported.

Question 348

Which device provides temporary electrical backup during a power interruption?

1. UPS
2. Surge suppressor
3. Patch panel
4. Signal processor

Correct Answer: 1

Explanation:

An Uninterruptible Power Supply (UPS) provides temporary electrical power when the normal utility supply is interrupted. A UPS can help keep critical AV equipment operating long enough for an orderly shutdown or, in some applications, until utility power returns. It can also help protect connected equipment from certain power disturbances depending on the UPS design. UPS capacity must be matched to the connected load and required runtime. Unlike a simple surge suppressor, a UPS contains energy storage and can continue supplying power when the primary electrical source becomes unavailable.

Question 349

Which optical fiber type is generally used for longer-distance backbone links?

1. Multimode fiber
2. Coaxial cable
3. Single-mode fiber
4. Shielded twisted pair

Correct Answer: 3

Explanation:

Single-mode fiber is commonly selected for long-distance optical communication because it supports light propagation through a very small core with low modal dispersion. This allows signals to travel substantially farther than typical multimode applications while supporting high bandwidth. Single-mode fiber is therefore frequently used for building backbones, campus connections, and other links where distance is significant. Multimode fiber remains useful for shorter installations and can be economical for many AV applications. The appropriate fiber type should be selected based on distance, transceiver compatibility, bandwidth requirements, and project specifications.

Question 350

What is the primary function of a TDR during cable testing?

1. Measure display luminance
2. Locate cable faults
3. Adjust speaker delay
4. Verify room temperature

Correct Answer: 2

Explanation:

A Time Domain Reflectometer (TDR) sends a test signal into a cable and analyzes reflections caused by changes in impedance. From the timing of those reflections, the technician can estimate the distance to conditions such as opens, shorts, or other discontinuities. TDR testing is particularly useful when troubleshooting installed cabling where the fault location is not immediately visible. It is different from a basic continuity test, which can establish whether conductors are electrically connected but may not provide the same distance-to-fault information. Proper interpretation requires understanding the cable type and test setup.

Question 351

Which component terminates an Ethernet cable into a modular outlet?

1. Keystone jack
2. Rack shelf
3. Cable ladder
4. Fiber cassette

Correct Answer: 1

Explanation:

A keystone jack provides a modular termination point for structured cabling, commonly presenting an RJ45-style interface at a wall plate, patch panel, or other mounting location. The permanent horizontal cable is terminated on the rear of the jack, while a patch cord connects equipment to the front. This arrangement helps organize structured cabling and makes moves or changes easier to manage. Proper termination and adherence to the selected wiring standard are essential for reliable network performance. Keystone modules can also support other connection types, depending on the installation requirements.

Question 352

Why is a service loop left in some AV cable installations?

1. To increase voltage
2. To improve image contrast
3. To allow future servicing
4. To eliminate grounding

Correct Answer: 3

Explanation:

A service loop is an intentional amount of extra cable left near equipment, termination points, or other service locations. The additional length provides flexibility for future maintenance, equipment replacement, repositioning, or retermination without immediately requiring a new cable run. Service loops should be sized appropriately rather than being excessive, because unnecessary cable can complicate routing and rack organization. Properly planned service loops are especially valuable in installations where equipment may be moved or replaced during the system’s operational life. They support maintainability while preserving organized cable management.

Question 353

Which video characteristic defines the darkest reproducible image level?

1. White balance
2. Black level
3. Frame rate
4. Chroma sampling

Correct Answer: 2

Explanation:

Black level defines the reference level associated with the darkest portion of a video image. Correct black-level adjustment is important because an incorrect setting can make dark areas appear washed out or cause shadow detail to disappear. Video systems must maintain appropriate black-level relationships through signal processing and display configuration. Technicians may evaluate black level during display calibration and troubleshooting, particularly when images appear excessively gray or crushed. Black level is distinct from brightness as a general room-lighting concept and should be considered within the context of video signal and display performance.

Question 354

What is HDR primarily intended to improve in video?

1. Dynamic image range
2. Cable termination
3. Audio isolation
4. Network addressing

Correct Answer: 1

Explanation:

High Dynamic Range (HDR) is intended to provide a wider range between dark and bright image information while supporting improved highlight detail and overall tonal reproduction. HDR can produce more realistic images when the content, signal path, and display all support the required format and characteristics. Proper implementation depends on compatible source devices, processing equipment, transmission interfaces, and displays. HDR is not simply a brightness control; it involves the way luminance and image information are represented and reproduced. AV professionals should verify end-to-end compatibility when deploying HDR-capable systems.

Question 355

Which video color space commonly uses luma and chroma components?

1. RGB
2. XYZ
3. YCbCr
4. CMYK

Correct Answer: 3

Explanation:

YCbCr represents video using a luma component and two chroma components. Separating brightness-related information from color information supports efficient video representation and is widely used in digital video systems. Chroma components can also be subsampled because human vision is generally less sensitive to fine chrominance detail than to luminance detail. RGB, by comparison, represents video using red, green, and blue components directly. Understanding color-space differences is useful when configuring source devices, processors, converters, and displays to ensure that color information is interpreted correctly.

Question 356

What does bit depth primarily determine in digital video?

1. Cable length
2. Number of color levels
3. Speaker coverage
4. Network topology

Correct Answer: 2

Explanation:

Bit depth determines how many discrete levels can be represented for a digital signal component. In video, greater bit depth allows finer gradations between levels, which can support smoother tonal transitions and reduce visible banding under appropriate conditions. The actual benefit depends on the source, processing chain, display capabilities, and content. Bit depth should not be confused with resolution, which describes the number of pixels, or frame rate, which describes how frequently images are refreshed. AV technicians should verify that the complete signal path supports the intended bit depth.

Question 357

Which streaming protocol is commonly used to control or transport real-time media streams?

1. RTSP
2. SMTP
3. FTP
4. SNMP

Correct Answer: 1

Explanation:

Real Time Streaming Protocol (RTSP) is commonly associated with controlling real-time streaming sessions. It can be used in networked AV environments to establish, control, or manage media streams between compatible devices. RTSP is distinct from general file-transfer protocols such as FTP and email protocols such as SMTP. In an AV deployment, understanding the protocols supported by cameras, encoders, decoders, and management systems helps technicians configure networked media correctly. Actual media transport may involve additional protocols, so RTSP should not automatically be interpreted as the complete media-delivery mechanism.

Question 358

What is the purpose of packetization in networked AV?

1. Convert AC power
2. Divide data into network units
3. Increase microphone sensitivity
4. Adjust projector focus

Correct Answer: 2

Explanation:

Packetization divides digital information into discrete network packets for transmission across a packet-switched network. Networked AV systems use this approach to transport audio, video, control information, or other digital data between endpoints. Each packet can contain addressing and sequencing information that helps the receiving system reconstruct the transmitted stream. Packet-based transmission introduces considerations such as latency, packet loss, ordering, and jitter. Proper network design and endpoint configuration are therefore important for reliable AV performance. Packetization itself is a fundamental communication process rather than an audio or video quality adjustment.

Question 359

Which safety measure helps secure equipment suspended overhead?

1. Secondary safety restraint
2. Display color profile
3. Network patch cord
4. Acoustic diffuser

Correct Answer: 1

Explanation:

A secondary safety restraint provides additional protection for equipment installed overhead. If the primary mounting hardware or attachment point fails, the secondary restraint is intended to help prevent the equipment from falling. Depending on the application, this may involve safety cables or other approved secondary attachment methods designed for the specific load and installation. Overhead AV equipment should also be supported by properly rated primary hardware and appropriate structural attachment points. Safety practices must follow applicable codes, manufacturer requirements, and site procedures rather than relying on a secondary restraint as the only support.

Question 360

Which document records deficiencies identified before final acceptance?

1. Deficiency report
2. Product brochure
3. Network diagram
4. Equipment catalog

Correct Answer: 1

Explanation:

A deficiency report documents problems, incomplete work, or items that do not yet meet the project requirements. During commissioning or pre-acceptance inspections, AV teams can record issues such as missing labels, incorrect configuration, incomplete installation, or failed performance tests. The responsible parties can then address each item before final acceptance. Maintaining a documented deficiency list helps provide accountability and creates a clear path toward project completion. Once corrective work is performed, the items can be rechecked and closed according to the project’s acceptance procedures.