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Axis Communications CTS 認定試験の出題範囲：
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質問 # 34
After there is an approved labor change to a project, what should the project manager do NEXT?
- A. update the schedule
- B. issue an invoice for the change
- C. order the equipment
- D. inform the purchasing department
正解：A
解説：
Once a labor change is approved, the next step for the project manager is to update the project schedule.
Changes in labor can affect the timeline of the project, and updating the schedule ensures that all stakeholders are aware of the new timelines and can adjust their plans accordingly. This step is critical for maintaining project organization and ensuring that the project stays on track despite the changes.
質問 # 35
What is the document that shows project tasks, indicating their allocated time, dependencies, and relationships between activities?
- A. Gantt chart
- B. Venn diagram
- C. flow chart
- D. needs analysis
正解：A
解説：
A Gantt chart is a project management tool that visually represents project tasks along a timeline. It shows the start and end dates of tasks, their duration, dependencies between tasks, and the relationships between activities. Gantt charts are widely used to plan, schedule, and monitor project progress, providing a clear overview of the project timeline and helping ensure that tasks are completed on schedule.
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質問 # 36
The integrator gets an urgent service call from the client's AV engineer that there is no power indication on the HDMI switcher in the rack. What is the BEST workaround that the integrator can suggest?
- A. patch the Input to the output, bypassing the switcher
- B. change the power supply of the faulty unit
- C. bring in another switcher to replace the broken one
- D. call the manufacturer for support
正解：A
解説：
The best immediate workaround is to patch the input directly to the output, bypassing the switcher. This allows the system to continue functioning while a more permanent solution is found. It ensures that the client experiences minimal downtime and disruption. Changing the power supply or replacing the switcher are also viable options, but they may take more time and resources. Calling the manufacturer for support can also be part of the solution process, but it doesn't provide an immediate workaround.
質問 # 37 
According to the Gantt chart pictured, the Project Manager should wait to start Activity C until which predecessor has been reached?
- A. Milestone X
- B. Week 3
- C. Activity B
- D. Week 4
正解：A
解説：
In the provided Gantt chart, Activity C is scheduled to start after the completion of Milestone X. This is evident as the milestone symbol (diamond) for Milestone X appears right before the beginning of Activity C, indicating that Activity C is dependent on the completion of Milestone X.
質問 # 38
When is the optimal time to conduct training of end users in a new AV installation?
- A. at the time of system handover with accompanying user guides
- B. when all users of the facility can be trained at the same time
- C. after all participants have reviewed equipment manuals
- D. during installation so that the system can be configured and modified in line with the user's knowledge
正解：A
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 # 39
What key specification of an owner furnished credenza will a technician need to know that may impact the warranty of the AV equipment?
- A. the quality, size, and availability of cable grommets
- B. the finished pattern, material, and application
- C. the amount of air that moves through the credenza
- D. the door hardware and swing operation
正解：C
解説：
The amount of air that moves through the credenza is crucial because AV equipment generates heat during operation. Proper ventilation ensures that the equipment does not overheat, which can cause damage and impact performance. Overheating can void warranties as manufacturers typically specify operational temperature ranges and ventilation requirements. Ensuring adequate airflow is a common stipulation in AV equipment warranties. Proper ventilation helps maintain optimal operating conditions, thereby protecting the equipment and upholding warranty terms.
質問 # 40
The color of a light wave is determined by the
- A. ambient temperature.
- B. amplitude.
- C. frequency.
- D. polarization.
正解：C
解説：
The color of a light wave is determined by its frequency. Different frequencies of light waves correspond to different colors in the visible spectrum. For instance, higher frequencies correspond to blue/violet light, while lower frequencies correspond to red light. Axis Technology Specialist documentation includes explanations of light properties, emphasizing the relationship between frequency and color to ensure proper selection and use of lighting in AV installations.
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質問 # 41
Which section of the Ohm's Law chart should be used to calculate values expressed in Ohms? Select the answer by clicking anywhere within thecorrectquadrant.
正解：
解説：
Explanation:
Ohm's Law is a fundamental principle used in electrical engineering and physics to describe the relationship between voltage (V), current (I), resistance (R), and power (P). The Ohm's Law chart is divided into four quadrants, each representing different formulas and relationships among these quantities.
To calculate values expressed in Ohms (which represent resistance, R), you should use Quadrant D. This quadrant contains formulas that solve for resistance (R), using various combinations of voltage (V), current (I), and power (P):
* R=VIR = \frac{V}{I}R=IV
* R=V2PR = \frac{V^2}{P}R=PV2
* R=PI2R = \frac{P}{I^2}R=I2P
These formulas are derived from Ohm's Law and the power equations, providing different ways to calculate resistance based on the available information.
References:
* Ohm's Law: Explains the relationship between voltage, current, and resistance.
* Power Formulas: Derived from the basic Ohm's Law equations and used to relate power with resistance, voltage, and current.
To further verify and detail the usage of Ohm's Law chart, you can refer to Axis Technology Specialist documentation or any standard electrical engineering textbooks which provide detailed explanations of these formulas and their applications.
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質問 # 42
Which of the following is the MOST SUITABLE security method for a small portable projector?
- A. Nylock nuts and bolts
- B. security screws
- C. adjustable mount
- D. cable lock
正解：D
質問 # 43
When considering the security of AV equipment residing on the client network, what is the MOST important step to take to keep the equipment safe from hackers before connecting the equipment to the network?
- A. assign an isolated subnet
- B. change the default passwords
- C. mount the equipment to the rack with security screws
- D. lock out the front panel buttons
正解：B
解説：
Changing the default passwords is the most important step to secure AV equipment before connecting it to the network. Default passwords are widely known and can easily be exploited by hackers. By changing these passwords to strong, unique ones, the risk of unauthorized access is significantly reduced. This is a fundamental security practice to protect networked equipment. Ensuring strong passwords helps prevent potential breaches, safeguarding the AV equipment and the broader network it is connected to.
質問 # 44
In an audiovisual system where a touch panel is to be connected to the control system via the LAN, the designer may choose to use a
- A. static IP address.
- B. MAC address.
- C. host IP address.
- D. shared IP address.
正解：A
質問 # 45
Which section of the Ohm's Law chart would you use to calculate watts? Select the coned quadrant.
正解：
解説：
Explanation:
To calculate watts (P) using the Ohm's Law chart, you would use the sections that involve power formulas.
These sections are:
* P = V * I
* P = I² * R
* P = V² / R
These formulas show the relationship between power (watts) and the other electrical quantities: voltage (V), current (I), and resistance (R).
質問 # 46
Which of the following terms means a complete lighting instrument composed of a lamp andhousing?
- A. luminaire
- B. lux
- C. lumen
- D. footcandle
正解：A
解説：
The term "luminaire" refers to a complete lighting instrument composed of a lamp and housing. This includes all components necessary for the fixture to function, such as the lamp (bulb), housing, reflector, and any other elements that contribute to its operation. Axis Technology Specialist documentation uses the term "luminaire" to describe complete lighting systems in various technical specifications and installation guides.
質問 # 47
Which section of a program report describes the probable costs of an AV project?
- A. infrastructure requirements
- B. systems descriptions
- C. budget
- D. needs analysis
正解：C
解説：
The budget section of a program report describes the probable costs of an AV project. This section outlines the estimated expenses for equipment, labor, installation, and other associated costs, providing the client with a financial overview of the project. Axis Technology Specialist documentation specifies that a detailed budget is essential for planning and managing project finances effectively.
質問 # 48
As part of a service agreement offering, wfwt PRIMARY role do preventive maintenance visits (PM/PMV) play?
- A. allows the AV provider access to client premises and scope future work
- B. allows the AV provider toclean, service and assess equipment In the field on a regular basis
- C. allows the AV provider tosell a service that is often forgotten by the customer, and therefore generate greater profit
- D. allows the AV provider to check in with customer and serves as an opportunity to sell further solutions
正解：B
解説：
Preventive maintenance visits (PM/PMV) are primarily designed to ensure that equipment is functioning correctly and to prevent potential failures. This involves cleaning, servicing, and assessing the equipment regularly to maintain optimal performance and longevity. This is in line with industry standards for preventive maintenance, ensuring reliability and reducing downtime.
質問 # 49
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. 4Q
- C. 2Q
- D. 8Q
正解：C
解説：
Assuming the speakers on the left are 8drivers and they are connected in parallel, the total impedanceZtZ_tZtcan 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=4Z_t = 4Zt=4If 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 # 50
Knowledge of the overall room function as envisioned by the client provides a
- A. starting point for determining the space AV needs.
- B. budget range for the project.
- C. design concept to give to the architect.
- D. list of major system components for the space.
正解：A
解説：
Knowledge of the overall room function as envisioned by the client provides a starting point for determining the space AV needs. Understanding the client's intended use of the room helps in specifying the appropriate AV components and designing a system that meets their requirements. Axis Technology Specialist documentation highlights the importance of aligning AV system design with the client's vision to ensure the functionality and usability of the space.
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質問 # 51
What is the PRIMARY advantage of preventive maintenance?
- A. upfront costs
- B. system fail proof
- C. less equipment downtime
- D. better system performance
正解：C
解説：
The primary advantage of preventive maintenance is reducing equipment downtime. By regularly maintaining and servicing equipment, potential issues can be identified and resolved before they lead to failures. This proactive approach ensures that systems remain operational and reduces the likelihood of unexpected breakdowns, which can be costly and disruptive. Preventive maintenance helps in maintaining system reliability and efficiency, ultimately contributing to better performance and longer equipment lifespan.
質問 # 52
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