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Axis CTS 認定試験の出題範囲：
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質問 # 63
When is the optimal time to conduct training of end users in a new AV installation?
- A. after all participants have reviewed equipment manuals
- B. when all users of the facility can be trained at the same time
- C. at the time of system handover with accompanying user guides
- D. during installation so that the system can be configured and modified in line with the user's knowledge
正解：C
解説：
The optimal time to conduct training of end users in a new AV installation is at the time of system handover with accompanying user guides. This ensures that users receive hands-on training with the actual equipment they will be using, allowing them to understand its operation fully and ask questions while a technician is present. Providing user guides during this time also gives them a reference to consult after the training session.
Axis Technology Specialist documentation stresses the importance of comprehensive training and support at the system handover phase to maximize user proficiency and satisfaction.
質問 # 64 
Which of these symbols is generally used to represent a network?
- A. B
- B. C
- C. D
- D. A
正解：B
解説：
The cloud symbol (Option C) is commonly used to represent a network, particularly in diagrams to signify a network or cloud-based resources. This symbol has become a universal representation of network connections and internet-based services.
CTS Technology Specialist ReferenceThe CTS materials include standard AV and IT symbols, where the cloud symbol is used to denote networks and internet connections, aiding in clear communication within technical diagrams.
質問 # 65
Constant voltage distributed audio systems utilize a_____wiring scheme.
- A. star
- B. series
- C. parallel
- D. loop
正解：C
解説：
Constant voltage distributed audio systems use a parallel wiring scheme, allowing multiple speakers to be connected to a single amplifier without needing to match impedances precisely. This setup is common in large venues where many speakers are distributed over a wide area.
CTS Technology Specialist ReferenceCTS materials explain that parallel wiring is standard in constant voltage systems, as it simplifies installation and allows for flexible speaker placement across large areas.
質問 # 66
Which document is used to clarify a project design issue?
- A. request for Information
- B. request for change
- C. change order
- D. progress report
正解：A
解説：
A Request for Information (RFI) is a document used to clarify project design issues. RFIs are typically issued when there is a need for additional information or clarification on specific aspects of the project design. This helps ensure that all parties have a clear understanding of the requirements and can proceed with accurate and consistent implementation. RFIs are commonly used in construction and AV projects to address uncertainties or discrepancies in the design documents.
質問 # 67
When specifying a paging system for a large building, what kind of speaker system should be recommended?
- A. near field
- B. line array
- C. direct coupled
- D. constant voltage
正解：D
解説：
Constant voltage speaker systems (70V or 100V systems) are ideal for large-scale installations like paging systems in large buildings. These systems allow easy distribution over long distances with minimal signal loss and support multiple speakers connected to the same amplifier. Near field (Option A) is for close-proximity applications. Line arrays (Option B) are used in concert settings, and direct-coupled systems (Option C) are not as efficient for large-scale distributed audio.
CTS References: AVIXA CTS Exam Guide, Chapter on Audio Distribution; CTS Handbook, Section on Constant Voltage Systems.
質問 # 68
The BEST way to ensure that a project is on budget is to
- A. ask the installation team to estimate remaining work to completion.
- B. review accrued labor and material costs against remaining work.
- C. visit the job site and determine the percentage of work completed.
- D. calculate the number of calendars days remaining to completion.
正解：B
解説：
The best way to ensure a project is on budget is by continuously reviewing accrued labor and material costs against the remaining work. This approach provides a clear understanding of the financial status of the project and helps in making informed decisions to stay within budget. By tracking these costs and comparing them to the project plan, it is possible to identify any discrepancies early and take corrective actions as needed.
References:
* Axis Communications - Project Management Best Practices
* Project Management Institute (PMI) Standards
質問 # 69
Your client has requested a 50inch monitor be mounted on the south wail of this boardroom. Which two recessed lights will need to be separated into the r own zone in order to turn them off when the monitor is on?
- A. C
- B. D
- C. B.
- D. A
正解：B
解説：
For mounting a 50-inch monitor on the south wall of the boardroom, recessed lights labeled as D will need to be separated into their own zone to turn them off when the monitor is on. This will prevent glare and reflections on the screen, ensuring a clear and visible display. Axis Technology Specialist documentation supports the necessity of proper lighting control in AV installations to optimize viewing conditions.
質問 # 70
Which of the following is an EQ type?
- A. limiter
- B. compressor
- C. parametric
- D. gate
正解：C
解説：
In audio technology, EQ (equalization) refers to the process of adjusting the balance between different frequency components of an audio signal. EQ types are specifically designed tools that allow sound engineers to manipulate frequencies in different ways. The types of EQ generally fall into categories like graphic, parametric, shelving, and band-pass, among others.
A parametric EQ is a type of equalizer that offers control over three primary parameters:
* Frequency - the specific frequency to be adjusted.
* Gain - the amount of boost or cut applied to the selected frequency.
* Q (Quality Factor) - the bandwidth or range of frequencies affected around the selected frequency.
Unlike other choices, a parametric EQ provides precise control over these settings, making it highly versatile in audio production. The other options are not types of EQ but rather different types of audio processing tools:
* Gate: Used to control the amplitude of an audio signal, often to suppress noise below a certain threshold.
* Limiter: A dynamics processor that prevents a signal from exceeding a set level.
* Compressor: Reduces the dynamic range of an audio signal by attenuating louder parts above a threshold.
CTS Technology Specialist ReferenceThe use of parametric EQ is a standard practice in AV system design, as outlined in the CTS (Certified Technology Specialist) training materials, which discuss various EQ types and their applications in optimizing audio fidelity. Parametric EQs are favored in professional settings for their flexibility and control over specific frequencies, as compared to fixed-frequency or limited-band EQs.
質問 # 71
Assuming that the speakers in the picture on the LEFT are 8 Q drivers, what is the impedance of the speaker system on the left?
- A. 16 Q
- B. 2Q
- C. 4Q
- D. 8Q
正解：B
解説：
Assuming the speakers on the left are 8# drivers and they are connected in parallel, the total impedance ZtZ_tZt can be calculated using the formula for parallel resistance:
Zt1=Z11+Z21For two 8# speakers in parallel:1Zt=18+18=28=14\frac{1}{Z_t} = \frac{1}{8} + \frac{1}{8} =
\frac{2}{8} = \frac{1}{4}Zt1=81+81=82=41Therefore,Zt=4#Z_t = 4#Zt=4#If the wiring in the diagram shows two pairs of 8# speakers connected in parallel, the total impedance is 4# for each pair, and if these pairs are then connected in parallel again, the final impedance is:1Zt=14+14=24=12\frac{1}{Z_t} = \frac{1}{4} +
\frac{1}{4} = \frac{2}{4} = \frac{1}{2}Zt1=41+41=42=21Thus, the total impedance is 2#.References:
* Axis Communications - Audio System Design
* Basic Electrical Engineering Textbooks
質問 # 72
Noting the position of ventilation ducts is useful when determining
- A. where a projector can be suspended.
- B. the heat gain of the equipment rack.
- C. where people can be seated in the room.
- D. the best position for the lectern.
正解：A
解説：
When installing a projector, it is essential to account for ventilation ducts as they affect where a projector can be suspended. Ventilation ducts influence airflow and can affect the cooling requirements of AV equipment. Positioning near ducts may cause issues like vibration, interference with airflow, and temperature inconsistencies.
CTS Technology Specialist ReferenceThe CTS materials emphasize checking ventilation, HVAC placement, and airflow during site surveys to determine optimal equipment placement and avoid interference with cooling and sound.
質問 # 73
The purchaser in an AV solutions firm has a key role to play in the area of
- A. reviewing the customer needs analysis to determine best solutions.
- B. communicating with vendors and internal staff members.
- C. estimating manpower availability and scheduling.
- D. coordinating project documentation and commissioning.
正解：B
解説：
The purchaser's key role includes communication with vendors and internal staff, managing order timelines, pricing, and ensuring that the necessary components are available when needed, which is essential for project efficiency.
CTS Technology Specialist ReferenceCTS materials highlight the role of procurement in maintaining project flow and ensuring timely delivery of AV components through effective vendor relations and internal coordination.
質問 # 74
A customer wants to set up a new digital classroom and has approached the integrator for a quote. What is the BEST way to understand the customer's needs before creating the quote?
- A. have a manufacturer representative visit the customer
- B. invite the customer to similar installs
- C. inform the customer of new technologies
- D. invite the customer to the office for a meeting
正解：B
解説：
Inviting a customer to visit similar installations is an effective method to help them visualize potential solutions and understand how these systems might work in their environment. This approach provides real- world examples of AV technology in action, allowing customers to see the capabilities, configurations, and performance of systems similar to what they are considering. It also offers the customer a chance to ask questions and make informed decisions based on firsthand experience.
CTS Technology Specialist ReferenceThe CTS curriculum emphasizes the importance of understanding customer needs through various methods, including site visits and demonstrations. This approach aligns with the best practices for gathering detailed client requirements and providing tailored solutions.
質問 # 75
The best practice for tagging AV equipment for inventory management is to
- A. use a unique identifier for each item.
- B. only tag Items over $99.00 in value.
- C. label all Items of the same model with a common identifier.
- D. include the value of each item on the tag.
正解：A
解説：
The best practice for tagging AV equipment for inventory management is to use a unique identifier for each item. This ensures that each piece of equipment can be tracked individually, reducing the risk of loss or confusion. Unique identifiers can include barcodes or RFID tags, which facilitate accurate and efficient tracking of inventory. Axis Technology Specialist documentation stresses the importance of unique identifiers in maintaining precise records and managing assets effectively.
質問 # 76
When gathering information, it is important to ask about the customer's goals because the
- A. customer may have unrealistic expectations of what can be done.
- B. customer may be planning on moving before the project is complete.
- C. integrator needs to confirm they understand the relationship between desires and budget
- D. integrator needs an understanding of what the customer expects to beable to do with the space.
正解：D
解説：
Understanding the customer's goals is crucial because it helps the integrator design a solution that meets the customer's expectations and functional requirements. Knowing what the customer expects to achieve with the space allows the integrator to tailor the AV system to those needs, ensuring satisfaction and effective use of the system. This understanding also helps in aligning the project scope with the customer's vision and can prevent misunderstandings and misalignments later in the project.
質問 # 77
When creating an estimate for a request for proposal (RFP), what is the FIRST tiling that should be done?
- A. obtain the costs
- B. read the project description
- C. create the submittal
- D. schedule a site visit
正解：B
解説：
The first step in creating an estimate for an RFP is to read the project description thoroughly. This ensures that you fully understand the scope, requirements, and objectives of the project. By doing so, you can accurately determine what is needed, identify potential challenges, and make informed decisions on costs, resources, and scheduling. Starting with a clear understanding of the project description sets
質問 # 78
During the needs analysis stage, it is MOST IMPORTANT to determine the client's
- A. application.
- B. installation time frame.
- C. budget.
- D. mission statement.
正解：A
解説：
During the needs analysis stage, understanding the client's application is critical, as it defines how the AV system will be used. This information guides the design to ensure the system meets the functional requirements for the specific use case, such as conferencing, presentations, or entertainment.
CTS Technology Specialist ReferenceThe CTS guidelines on needs analysis emphasize determining the application as a foundation for tailoring the AV solution to fit client-specific operational needs and goals.
質問 # 79
There are a number of ways to attach a projector mount to a concrete ceiling. What is tire PRIMARY factor that must be considered when deciding which, if any, method is appropriate?
- A. the space between the drop ceiling and the concrete
- B. the condition of the concrete
- C. the tools that are available
- D. the age of the concrete
正解：B
解説：
The primary factor that must be considered when deciding how to attach a projector mount to a concrete ceiling is the condition of the concrete. Ensuring that the concrete is in good condition and can support the weight and stress of the projector mount is essential for safety and stability. Axis Technology Specialist documentation emphasizes assessing the integrity of the mounting surface to prevent structural failures and ensure secure installation.
質問 # 80
Ambient noise PRIMARILY affects desired sound by
- A. complementing it.
- B. interfering with it.
- C. canceling it out.
- D. enhancing it.
正解：B
解説：
Comprehensive Detailed Explanation with all Technology Specialist References:Ambient noise is any unwanted background sound that can interfere with the clarity and intelligibility of the desired audio signal. In an AV setting, ambient noise can reduce speech intelligibility, making it harder for the audience to understand the speaker or experience the audio as intended.
Option B, "canceling it out," would refer to techniques like active noise cancellation, which isn't the primary effect of ambient noise on sound but rather a solution to it. Options A and D, "enhancing" and
"complementing," are not applicable because ambient noise typically detracts from audio quality rather than adding to it.
CTS References: AVIXA CTS Exam Guide, Chapter on Audio Basics and Acoustics; CTS Handbook, Section on Acoustic Principles and Noise Management in AV Systems.
質問 # 81 
This image shows the workings of which type of microphone?
- A. ribbon
- B. dynamic
正解：B
解説：
The image shows a dynamic microphone, which works through electromagnetic induction. In a dynamic microphone, sound waves cause the diaphragm to move, which in turn moves a coil of wire within the magnetic field of a magnet. This movement generates an electrical signal that corresponds to the sound. The visible components, such as the diaphragm, coil, and magnet, are characteristic of a dynamic microphone's internal structure.
CTS Technology Specialist ReferenceThe CTS curriculum details the workings of various microphone types, explaining that dynamic microphones are durable and suitable for live sound due to their ability to handle high sound pressure levels.
質問 # 82
When designing an AVB system, ensuring that these are AVB compliant is critical.
- A. network electronics
- B. microphone cables
- C. loudspeakers
- D. displays
正解：A
解説：
When designing an AVB (Audio Video Bridging) system, ensuring that the network electronics (such as switches, routers, and network interface cards) are AVB compliant is critical. AVB is a set of standards developed to facilitate the transmission of audio and video data over Ethernet networks with precise timing and low latency. AVB-compliant network electronics are essential for maintaining the quality and synchronization of audio and video streams in such systems.
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質問 # 83
The circuit on the RIGHT is an electrical drawing of what type of speaker system?
- A. stereo pair circuit
- B. constant voltage
- C. combination parallel/series circuit
- D. series circuit
正解：C
解説：
The circuit on the right is a combination parallel/series circuit. In this configuration, two sets of speakers are connected in parallel, and these parallel sets are then connected in series. This type of arrangement allows for balancing the load across multiple speakers while maintaining the desired impedance levels.
References:
* Axis Communications - Audio System Design Guidelines
* Electrical Engineering Textbooks
質問 # 84
What is the difference between the audio system's operational level and the maximum level the system can attain?
- A. directivity index
- B. loudspeaker sensitivity
- C. headroom
- D. noise floor
正解：C
質問 # 85
The amount of light emitted through a projection system lens is TYPICALLY specified and measured
- A. in lumens.
- B. in lux.
- C. by its contrast ratio.
- D. in footcandles.
正解：A
解説：
The light output of a projection system is typically measured in lumens, which quantify the total amount of visible light emitted by the projector. Lumens measure the projector's brightness, making it a standard metric for comparing different projectors' output capacities.
* Lux is used to measure illuminance or the amount of light falling on a surface.
* Footcandles is another unit of illuminance, similar to lux but based on the imperial system.
* Contrast ratio describes the difference in luminance between the brightest white and the darkest black a projector can produce, not the brightness itself.
CTS Technology Specialist ReferenceAccording to CTS training materials, projector brightness should be specified in lumens, which provides a clear indication of the projector's suitability for different environments and screen sizes.
質問 # 86
The circuit on the RIGHT is an electrical drawing of what type of speaker system?
- A. stereo pair circuit
- B. constant voltage
- C. combination parallel/series circuit
- D. series circuit
正解：C
解説：
The circuit on the right is a combination parallel/series circuit. In this configuration, two sets of speakers are connected in parallel, and these parallel sets are then connected in series. This type of arrangement allows for balancing the load across multiple speakers while maintaining the desired impedance levels.
References:
* Axis Communications - Audio System Design Guidelines
* Electrical Engineering Textbooks
質問 # 87
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