Oklahoma Cctv (Closed Circuit Television) Practice Test

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  • 1/85 Questions

    DC stands for:

    • Direct current
    • Distributed current
    • Diminishing current
    • Digital current
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About This Quiz

This Oklahoma CCTV Practice Test evaluates knowledge on various aspects of CCTV installation and maintenance, including cabling, circuit insulation, camera features, and legal compliance. It's designed for professionals seeking to enhance their skills in security system management.

Oklahoma Cctv (Closed Circuit Television) Practice Test - Quiz

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  • 2. 

    What is the primary hazard when working with gas-powered tools in an indoor space?

    • Corrosiveness of the fuel

    • Hazardous vapors or fumes

    • Carcinogens in the fuel

    • Temperature of the motor and parts

    Correct Answer
    A. Hazardous vapors or fumes
    Explanation
    When working with gas-powered tools in an indoor space, the primary hazard is the release of hazardous vapors or fumes. Gasoline or other fuels used in these tools can emit toxic gases, such as carbon monoxide, which can quickly build up in enclosed areas and pose a serious health risk. These fumes can cause symptoms like dizziness, nausea, headaches, and even asphyxiation in severe cases. It is important to ensure proper ventilation and avoid using gas-powered tools in confined spaces to minimize the risk of exposure to these hazardous vapors or fumes.

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  • 3. 

    What must be worn when working on a ladder?

    • Slip-resistant footwear

    • Steel-toed boots

    • Safety glasses

    • Shock-resistant gloves

    Correct Answer
    A. Slip-resistant footwear
    Explanation
    Slip-resistant footwear must be worn when working on a ladder to ensure safety and prevent accidents. Ladders can be unstable and slippery, especially when working at heights, so wearing slip-resistant footwear provides better traction and grip on the ladder rungs, reducing the risk of slipping and falling. This type of footwear is designed with special soles or treads that increase friction and stability, allowing the worker to maintain balance and stability while climbing or standing on the ladder. Therefore, slip-resistant footwear is essential to minimize the chances of accidents and injuries when working on a ladder.

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  • 4. 

    What crime is committed by a technician or salesperson who falsifies a customer’s signature or adds content to a document that has already been signed?

    • Fraud

    • Larceny

    • Indigent interference

    • Invasion of privacy

    Correct Answer
    A. Fraud
    Explanation
    The crime committed by a technician or salesperson who falsifies a customer's signature or adds content to a document that has already been signed is fraud. This is because fraud involves the intentional deception or misrepresentation for personal gain, and in this case, the technician or salesperson is deceiving the customer by altering the document without their knowledge or consent.

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  • 5. 

    When working on a ladder, the worker should:

    • Lean away from the ladder

    • Have someone hold the ladder when standing on the top rung

    • Keep his weight centered between the side rails

    • Tilt the ladder towards the task while standing on it

    Correct Answer
    A. Keep his weight centered between the side rails
    Explanation
    When working on a ladder, it is important for the worker to keep his weight centered between the side rails. This ensures stability and reduces the risk of the ladder tipping over. By distributing the weight evenly, the worker can maintain balance and minimize the chances of accidents or falls. This practice is crucial for ladder safety and should be followed to prevent injuries.

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  • 6. 

    Adjusting the distance between the lens and the imaging device is called:

    • Focusing

    • Pixelation

    • Compensation

    • Cropping

    Correct Answer
    A. Focusing
    Explanation
    The term "focusing" refers to the process of adjusting the distance between the lens and the imaging device. This adjustment is necessary to achieve clear and sharp images. By changing the distance, the lens can bring the subject into focus, ensuring that it appears sharp and well-defined in the final image.

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  • 7. 

    A global system of interconnected computer networks is called:

    • The internet

    • The public-switched telephone network

    • A two-way radio mesh network

    • A cellular network

    Correct Answer
    A. The internet
    Explanation
    The correct answer is the internet. The internet is a global system of interconnected computer networks that allows for the exchange of information and communication between devices worldwide. It is a vast network that enables individuals and organizations to access and share resources, such as websites, emails, and files, through various protocols and technologies. The internet has revolutionized the way people connect, communicate, and access information, making it an essential part of modern society.

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  • 8. 

    A technician experiences sudden weakness on the right side of her body and is having trouble speaking and understanding simple statements. What is the likely cause of her symptoms?

    • Dehydration

    • Stroke

    • Low blood sugar

    • High blood sugar

    Correct Answer
    A. Stroke
    Explanation
    The likely cause of the technician's symptoms is a stroke. A stroke occurs when the blood supply to the brain is disrupted, leading to a lack of oxygen and nutrients. This can result in sudden weakness on one side of the body, difficulty speaking, and trouble understanding simple statements. Dehydration, low blood sugar, and high blood sugar can cause various symptoms, but they are not typically associated with sudden weakness and speech problems like a stroke.

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  • 9. 

    What safety features must be on power tools used in the workplace?

    • Variable speed controls and rechargeable batteries

    • Properly fitting guards and appropriate safety switches

    • Constant pressure switches and reinforced plugs

    • Anti-slip handholds and cord storage compartments

    Correct Answer
    A. Properly fitting guards and appropriate safety switches
    Explanation
    Properly fitting guards and appropriate safety switches are necessary safety features for power tools used in the workplace. Guards help protect the user from coming into contact with the moving parts of the tool, reducing the risk of injury. Safety switches are designed to automatically shut off the tool when a dangerous situation occurs, such as when the tool is dropped or when the user loses control. These features ensure that power tools are used safely and minimize the potential for accidents or injuries in the workplace.

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  • 10. 

    What type of building material most interferes with wireless communications?

    • Sheetrock/gypsum board

    • Plastic

    • Metal

    • Concrete

    Correct Answer
    A. Metal
    Explanation
    Metal is the building material that most interferes with wireless communications. This is because metal is a highly conductive material that can block or reflect wireless signals, causing interference and reducing the strength and quality of the wireless communication. Metal objects such as walls, roofs, or furniture can act as barriers for wireless signals, making it difficult for them to pass through and reach their intended destination.

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  • 11. 

    In residential construction, workers must be protected by a harness if they can fall more than how many feet?

    • 3

    • 6

    • 12

    • 15

    Correct Answer
    A. 6
    Explanation
    In residential construction, workers must be protected by a harness if they can fall more than 6 feet. This is because falls from a height greater than 6 feet can result in serious injuries or even fatalities. Therefore, it is necessary to provide workers with the proper safety equipment, such as harnesses, to prevent such accidents and ensure their well-being.

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  • 12. 

    Which type of wire carries the most current?

    • 12 AWG

    • 18 AWG

    • 22 AWG

    • 24 AWG

    Correct Answer
    A. 12 AWG
    Explanation
    The 12 AWG wire carries the most current because the American Wire Gauge (AWG) system indicates that a lower AWG number corresponds to a larger wire diameter and therefore a higher current-carrying capacity. In other words, the 12 AWG wire has a larger cross-sectional area than the other options, allowing it to handle more current without overheating.

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  • 13. 

    A power tool has a 3-pronged plug but the only available outlets are 2-pronged. What should the technician do?

    • Remove the outlet and plug and hardwire the tool

    • Use a 3-prong to 2-prong adapter

    • Remove the ground prong from the power cord of the tool

    • Locate a 3-pronged outlet

    Correct Answer
    A. Locate a 3-pronged outlet
    Explanation
    The technician should locate a 3-pronged outlet because power tools with a 3-pronged plug require a grounding connection for safety purposes. Removing the outlet and plug and hardwiring the tool or using a 3-prong to 2-prong adapter would compromise the grounding connection and potentially lead to electrical hazards. Removing the ground prong from the power cord of the tool would also eliminate the grounding connection, which is essential for protecting against electrical shocks. Therefore, the best solution is to find a 3-pronged outlet to ensure the safe and proper use of the power tool.

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  • 14. 

     How many points of contact with a ladder should a worker maintain at all times?

    • One

    • Two

    • Three

    • Four

    Correct Answer
    A. Three
    Explanation
    A worker should maintain three points of contact with a ladder at all times. This means that they should have both feet and one hand or both hands and one foot in contact with the ladder. This ensures stability and reduces the risk of falling or losing balance while climbing or working on the ladder. By having three points of contact, the worker can securely grip the ladder and maintain a stable position, minimizing the chances of accidents or injuries.

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  • 15. 

    A general safety rule to follow when working with power tools is to:

    • Hold onto the plug securely when using the cord to hoist or lower a tool

    • Verify the power switch is in the “off” position before cleaning or servicing

    • Disconnect tools from power when not in use or when changing accessories

    • Wear loose clothing that allows freedom of movement

    Correct Answer
    A. Disconnect tools from power when not in use or when changing accessories
    Explanation
    Disconnecting tools from power when not in use or when changing accessories is a general safety rule to follow when working with power tools. This is important to prevent accidental activation of the tool and to avoid any potential injuries or accidents. By disconnecting the tool from power, the risk of the tool turning on unexpectedly is minimized, reducing the chances of any harm to the user or others in the vicinity. Additionally, disconnecting the tool from power when changing accessories ensures that the user can safely handle and replace the accessories without any electrical hazards.

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  • 16. 

    While engaged in alarm and locksmith work, the company’s license number must be at least 2” in size and displayed:

    • On all sides of all vehicles where the company name is displayed

    • In the windshield and on the bumper of all vehicles

    • On the driver’s door of all vehicles

    • In the center of the rear bumper on all vehicles

    Correct Answer
    A. On all sides of all vehicles where the company name is displayed
    Explanation
    The correct answer is "On all sides of all vehicles where the company name is displayed." This means that the license number should be visible on all sides of the vehicles where the company name is displayed. This ensures that the license number is easily visible and identifiable to anyone who sees the vehicle.

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  • 17. 

    A characteristic of direct current is that it:

    • Cannot be stored

    • Changes polarity

    • Has a constant polarity

    • Is produced by a transformer

    Correct Answer
    A. Has a constant polarity
    Explanation
    Direct current (DC) is characterized by having a constant polarity, meaning that the flow of electric charge remains in one direction. Unlike alternating current (AC), which changes direction periodically, DC maintains a steady flow of electrons in a single direction. This property of DC makes it suitable for various applications, such as powering electronic devices, batteries, and certain types of motors.

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  • 18. 

    When using a portable ladder to access an upper landing surface, how many feet above the landing’s surface must the side rails of the ladder extend?

    • Two

    • Three

    • Five

    • Six

    Correct Answer
    A. Three
    Explanation
    When using a portable ladder to access an upper landing surface, the side rails of the ladder must extend at least three feet above the landing's surface. This is important for providing stability and a secure handhold for the person climbing the ladder. Extending the side rails three feet above the landing surface helps to ensure that there is enough support and prevents the ladder from tipping over or becoming unstable during use.

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  • 19. 

    A blown fuse in a power supply usually indicates:

    • Inadequate voltage

    • Too much resistance

    • Too much current is being drawn

    • The poser supply is too large

    Correct Answer
    A. Too much current is being drawn
    Explanation
    A blown fuse in a power supply usually indicates that too much current is being drawn. When there is an excessive amount of current flowing through the circuit, it can cause the fuse to overheat and ultimately blow. This is a safety mechanism designed to protect the power supply and other components from damage. It indicates that there is a fault or malfunction in the circuit, causing an abnormal amount of current to be drawn.

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  • 20. 

    The Oklahoma Alarm and Locksmith Industry Act applies to:

    • Work performed by individuals licensed pursuant to the Electrical License Act

    • Persons who sell, install and service alarm systems

    • State employees engaged in the performance of official duties

    • Individuals who own and install alarm devices on their own property

    Correct Answer
    A. Persons who sell, install and service alarm systems
    Explanation
    The Oklahoma Alarm and Locksmith Industry Act applies to persons who sell, install, and service alarm systems. This means that individuals or businesses involved in these activities are required to comply with the regulations and licensing requirements outlined in the Act. The Act does not apply to individuals licensed under the Electrical License Act, state employees, or individuals who own and install alarm devices on their own property.

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  • 21. 

    Cables that are not plenum rated can be used in a plenum when they are:

    • Rated for nonpower-limited circuits

    • Used in areas with no air flow

    • Marked "special use"

    • Installed in a plenum rated raceway

    Correct Answer
    A. Installed in a plenum rated raceway
    Explanation
    Cables that are not plenum rated can still be used in a plenum if they are installed in a plenum rated raceway. This means that even though the cables themselves may not be suitable for use in areas with air flow, they can still be used safely in a plenum if they are enclosed within a raceway that meets the necessary plenum rating requirements. This ensures that the cables are protected and do not pose a fire hazard in the plenum area.

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  • 22. 

    All monitoring and/or lease contracts shall include the initial term of the agreement, the renewal term of the agreement and the:

    • Terms for notification or cancellation

    • Company managers name

    • Telephone number to call to renew or cancel the contract

    • Names of customers who can provide testimonials

    Correct Answer
    A. Terms for notification or cancellation
    Explanation
    All monitoring and/or lease contracts shall include the initial term of the agreement and the renewal term of the agreement, as well as the terms for notification or cancellation. This ensures that both parties are aware of the specific conditions under which the contract can be terminated or renewed. Including these terms in the contract helps to clarify the rights and responsibilities of each party and provides a clear framework for any potential changes or terminations in the future.

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  • 23. 

    GSM and CDMA are two types of: 

    • Two-way radio mesh networks

    • Cellular networks

    • Public-switched telephone networks

    • Internet networks

    Correct Answer
    A. Cellular networks
    Explanation
    GSM and CDMA are two types of cellular networks. Cellular networks are a type of wireless communication system that allows mobile devices to connect to the internet and make phone calls. GSM (Global System for Mobile Communications) and CDMA (Code Division Multiple Access) are two different technologies used in cellular networks to transmit and receive signals. GSM is widely used in Europe, while CDMA is more common in North America. These technologies enable mobile devices to communicate with each other and with the network infrastructure, providing a seamless wireless communication experience.

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  • 24. 

    What type of footwear best protects against electrical hazards in the workplace?

    • Rubber overshoes

    • Rubber-soled sneakers

    • Conductive safety shoes

    • Nonconductive safety shoes

    Correct Answer
    A. Nonconductive safety shoes
    Explanation
    Nonconductive safety shoes are the best type of footwear to protect against electrical hazards in the workplace. Electrical hazards can occur when there is a risk of electrical current passing through the body. Nonconductive safety shoes are made from materials that do not conduct electricity, such as rubber or leather, and provide insulation to prevent electrical current from passing through the shoes and into the wearer's body. This helps to reduce the risk of electrical shock or injury in the workplace.

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  • 25. 

    When providing first aid to a victim of heat stroke, what should be done first?

    • Give the victim caffeinated beverages to maintain alertness

    • Have the person lay down with feet elevated to decrease heart rate

    • Take steps to lower the person’s body temperature

    • Administer an over-the-counter pain medication to prevent headache

    Correct Answer
    A. Take steps to lower the person’s body temperature
    Explanation
    In cases of heat stroke, it is crucial to lower the person's body temperature as the first step. Heat stroke can be a life-threatening condition, and immediate cooling is essential to prevent further damage to the body. This can be done by moving the person to a cooler area, removing excess clothing, and applying cool water or ice packs to the body. Caffeinated beverages, elevating the feet, and administering pain medication are not appropriate or effective measures in treating heat stroke.

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  • 26. 

    According to NFPA 70, what is used to determine the number and size of conductors used in a raceway?

    • Number of junction boxes in the raceway

    • Air temperature in the raceway

    • Raceway size

    • Raceway height

    Correct Answer
    A. Raceway size
    Explanation
    According to NFPA 70, the number and size of conductors used in a raceway is determined by the raceway size. The raceway size refers to the dimensions and capacity of the raceway, which determines the maximum number and size of conductors that can be safely installed. The larger the raceway size, the more conductors it can accommodate. This is important for ensuring proper electrical capacity and preventing overheating or overloading of the raceway.

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  • 27. 

    What are the most likely causes of accidents when working with hand tools?

    • Misuse of tools and dry environmental conditions

    • Improper maintenance and misuse of tools

    • Wet environmental conditions and lack of care during use

    • Age and quality of tools

    Correct Answer
    A. Improper maintenance and misuse of tools
    Explanation
    Improper maintenance and misuse of tools are the most likely causes of accidents when working with hand tools. When tools are not properly maintained, such as not being cleaned, sharpened, or repaired when necessary, they can become less effective and more prone to accidents. Additionally, when tools are misused, such as using the wrong tool for a specific task or using a tool in an incorrect manner, accidents are more likely to occur. Therefore, it is important to regularly maintain and use hand tools correctly to prevent accidents and ensure safety in the workplace.

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  • 28. 

    In reference to cabling, UTP means:

    • Universal twisted plenum

    • Unshielded twisted pair

    • Unshielded twisted plenum

    • Universal twisted pair

    Correct Answer
    A. Unshielded twisted pair
    Explanation
    UTP stands for Unshielded Twisted Pair. In cabling, UTP refers to a type of cable that consists of twisted pairs of wires without any shielding. This type of cable is commonly used for Ethernet connections and is known for its affordability and ease of installation. Unlike shielded cables, UTP does not have any additional protection against electromagnetic interference. However, it is suitable for most applications in residential and small business environments where the risk of interference is minimal.

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  • 29. 

    What is the total current of the circuit shown above? (Table not shown here)

    • 0.125A

    • 1.25A

    • 1.58A

    • 7.58A

    • Need the table to better answer this question

    Correct Answer
    A. Need the table to better answer this question
  • 30. 

    A CCTV system layout shows a camera mounted 12’ AFF. What does AFF mean?

    • Area flowing freely

    • Above finished floor

    • Above final flooring

    • Always facing forward

    Correct Answer
    A. Above finished floor
    Explanation
    AFF stands for "Above finished floor". In the context of a CCTV system layout, it indicates the height at which the camera is mounted in relation to the finished floor surface. This information is important for proper installation and positioning of the camera to ensure optimal surveillance coverage.

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  • 31. 

    According to NFPA 70, which statement regarding underground cable and conductors is true?

    • Conductors must be silicone-based

    • Cable can be constructed of standard electrical wire

    • Since conduit is used, cable can be constructed of any type of wire

    • Insulated conductors and cables must be listed for use in wet locations

    Correct Answer
    A. Insulated conductors and cables must be listed for use in wet locations
    Explanation
    Insulated conductors and cables must be listed for use in wet locations according to NFPA 70. This means that when installing underground cables and conductors, they must be specifically designed and approved for use in wet environments to ensure safety and prevent any potential hazards.

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  • 32. 

    What property of a conductor limits current?

    • Capacitance

    • Polarization

    • Resistance

    • Friction

    Correct Answer
    A. Resistance
    Explanation
    Resistance is the property of a conductor that limits current. It is a measure of how much a material opposes the flow of electric current. Conductors with high resistance will limit the amount of current that can flow through them, while conductors with low resistance will allow more current to pass. Resistance is determined by factors such as the material of the conductor, its length, and its cross-sectional area.

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  • 33. 

    The rate of data transfer, bit rate or throughput that is measured in bits per second is:

    • Bandwidth

    • RS485

    • IP processing

    • Frames per second

    Correct Answer
    A. Bandwidth
    Explanation
    Bandwidth refers to the rate of data transfer, measured in bits per second. It represents the amount of data that can be transmitted over a network or communication channel in a given time period. It is a crucial factor in determining the speed and efficiency of data transmission. RS485 is a communication standard, IP processing refers to the handling of internet protocol packets, and frames per second is a measure of video or animation playback speed. Therefore, the correct answer is bandwidth.

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  • 34. 

    What type of fire-resistant cable is used because of its low smoke-producing characteristics?

    • Plenum

    • PVC

    • CL2

    • Twisted pair

    Correct Answer
    A. Plenum
    Explanation
    Plenum cable is used because of its low smoke-producing characteristics. Plenum cables are specifically designed to be used in plenum spaces, which are areas in buildings that facilitate air circulation for heating, ventilation, and air conditioning systems. In case of a fire, plenum cables release less smoke compared to other types of cables, reducing the potential harm caused by smoke inhalation. This makes plenum cables a safer choice for installations in areas where smoke management is crucial, such as commercial buildings, hospitals, and schools.

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  • 35. 

    A characteristic of alternating current is that it:

    • Has a constant polarity

    • Travels from the negative terminal of a power source and returns to the positive terminal

    • Changes polarity 60 times per second

    • Follows the principles of the Electron Flow Theory

    Correct Answer
    A. Changes polarity 60 times per second
    Explanation
    Alternating current is a type of electrical current that constantly changes direction. It does not have a constant polarity like direct current, which flows in one direction only. In the case of alternating current, the flow of electrons oscillates back and forth, reversing its direction periodically. The statement "Changes polarity 60 times per second" accurately describes the characteristic of alternating current, as it refers to the frequency of the current's oscillation, commonly known as 60 Hertz (Hz).

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  • 36. 

    How many trainees per job site can work under the supervision of a licensed technician?

    • Two

    • Three

    • Four

    • Five

    Correct Answer
    A. Three
    Explanation
    According to the given question, the number of trainees per job site that can work under the supervision of a licensed technician is three.

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  • 37. 

    A technician in allowed to perform work within:

    • The alarm industry area(s) for which the company manager is licensed

    • Any alarm industry area regulated by the Oklahoma Alarm and Locksmith Industry Act

    • The alarm industry area(s) for which he is licensed

    • Any alarm industry area as long as he is supervised by a technician who is licensed in that area

    Correct Answer
    A. The alarm industry area(s) for which he is licensed
    Explanation
    A technician is only allowed to perform work within the alarm industry area(s) for which he is licensed. This means that the technician has the necessary qualifications and certifications to work in specific areas of the alarm industry. They are not permitted to work in areas for which they are not licensed, even if they are supervised by a licensed technician. Licensing ensures that technicians have the appropriate knowledge and skills to carry out their work safely and effectively.

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  • 38. 

    NFPA 70 is also referred to as the:

    • Hazardous Material Code

    • National Electric Code

    • Life Safety Code

    • National Fire Code

    Correct Answer
    A. National Electric Code
    Explanation
    The correct answer is National Electric Code. NFPA 70 is commonly known as the National Electric Code, which is a set of standards and regulations for electrical installations in the United States. It provides guidelines for the safe installation and use of electrical systems to protect people and property from electrical hazards. The National Electric Code is widely adopted and enforced by local and state authorities to ensure electrical safety in buildings and structures.

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  • 39. 

    When connecting a DVR to a network, a MAC address refers to:

    • Media Address Camera

    • Motion Active Changes

    • Motion Activated Camera

    • Media Access Control

    Correct Answer
    A. Media Access Control
    Explanation
    When connecting a DVR to a network, a MAC address refers to Media Access Control. A MAC address is a unique identifier assigned to a network interface card (NIC) by the manufacturer. It is used to identify devices on a network and ensure that data is transmitted to the correct destination. In the context of a DVR, the MAC address is used to establish a connection with the network and enable communication between the DVR and other devices on the network.

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  • 40. 

    Low voltage wiring installations must:

    • Comply with NFPA 70

    • Use D-rings to secure cable

    • Comply with manufacturer’s recommendations

    • Use jacketed, shielded cable

    Correct Answer
    A. Comply with NFPA 70
    Explanation
    The correct answer is to comply with NFPA 70. NFPA 70, also known as the National Electrical Code (NEC), is a standard that provides guidelines and requirements for electrical installations, including low voltage wiring. It ensures the safety and proper functioning of electrical systems by setting standards for wiring methods, equipment, and installations. Complying with NFPA 70 is essential to ensure that low voltage wiring installations meet the necessary safety and performance standards.

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  • 41. 

    Any physical assault, threatening behavior, or verbal abuse that occurs in an employment setting is called:

    • Bullying

    • Occupational battery

    • Workplace violence

    • Harassment

    Correct Answer
    A. Harassment
    Explanation
    Harassment refers to any physical assault, threatening behavior, or verbal abuse that occurs in an employment setting. It is a form of mistreatment or discrimination that creates a hostile or intimidating work environment. This can include unwanted advances, offensive jokes, or any behavior that targets an individual based on their race, gender, religion, or other protected characteristics. Harassment can have serious negative effects on the victim's mental and physical well-being, and it is important for employers to have policies in place to prevent and address such behavior.

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  • 42. 

    What is the command line to verify IP connectivity to a device?

    • IPidentity

    • 192.168.1.1

    • Ping

    • IPlocate

    Correct Answer
    A. Ping
    Explanation
    The correct answer is "ping". The ping command is used to verify IP connectivity to a device. It sends a small packet of data to the specified IP address and waits for a response. If a response is received, it indicates that there is connectivity between the source and destination devices. This command is commonly used to troubleshoot network connectivity issues and to measure the round-trip time for data to travel to and from a device.

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  • 43. 

    Electrical protective devices include fuses, circuit breakers and:

    • Ground-fault circuit interrupters

    • Insulators

    • Shunts

    • Grounding rods

    Correct Answer
    A. Ground-fault circuit interrupters
    Explanation
    Ground-fault circuit interrupters (GFCIs) are electrical protective devices that are designed to quickly shut off power in the event of a ground fault. They are used to protect against electrical shocks and prevent electrical fires. GFCIs monitor the flow of electricity and can detect imbalances in the electrical current. If a ground fault is detected, the GFCI will quickly interrupt the circuit, cutting off the power supply. This helps to prevent injury and damage to electrical equipment.

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  • 44. 

    What are the most common nonfatal injuries associated with electrical shock?

    • Burns

    • Falls

    • Electrocutions

    • Bruises

    Correct Answer
    A. Burns
    Explanation
    The most common nonfatal injuries associated with electrical shock are burns. When a person comes into contact with an electrical source, the current can cause burns on the skin. These burns can range from mild to severe, depending on the intensity and duration of the shock. It is important to seek medical attention for electrical burns to prevent infection and promote proper healing.

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  • 45. 

    What type of analog coaxial cable connector requires pushing and twisting to firmly connect?

    • RCA

    • TNC

    • UHF

    • BNC

    Correct Answer
    A. BNC
    Explanation
    The BNC (Bayonet Neill-Concelman) connector requires pushing and twisting to firmly connect. This type of connector is commonly used for analog coaxial cables in audio and video applications. The bayonet-style design ensures a secure connection by locking the connector in place with a quick twist. The BNC connector is known for its ease of use and reliability, making it a popular choice in various industries.

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  • 46. 

    The smallest element of data in a video image is known as a:

    • Bit

    • Point

    • Byte

    • Pixel

    Correct Answer
    A. Pixel
    Explanation
    A video image is made up of tiny individual dots called pixels. Each pixel represents a single point of color in the image. Therefore, the smallest element of data in a video image is known as a pixel.

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  • 47. 

    A coworker sustained a high voltage shock during an installation and is unconscious. What is the first action to take?

    • Contact a supervisor for instructions and to report the accident

    • Call 911

    • Check to see if the coworker is breathing and, if not, attempt to establish an airway

    • Shut off power to the structure

    Correct Answer
    A. Shut off power to the structure
    Explanation
    In this scenario, the first action to take is to shut off power to the structure. This is important to ensure the safety of the unconscious coworker and prevent any further harm. By cutting off the power source, the risk of additional electrical shocks is minimized, allowing for a safer environment for both the coworker and any potential rescuers. Once the power is shut off, other necessary actions such as checking for breathing and contacting a supervisor or emergency services can be taken.

    Rate this question:

  • 48. 

    Symptoms of heat stroke include elevated body temperature and:

    • Profuse sweating

    • Difficulty breathing

    • Rapid, weak pulse

    • Hot, moist skin

    Correct Answer
    A. Rapid, weak pulse
    Explanation
    Heat stroke is a severe condition that occurs when the body's temperature regulation system fails, leading to dangerously high body temperature. One of the symptoms of heat stroke is a rapid, weak pulse. This means that the heart rate is fast but the pulse feels weak or thready. The body's response to the heat causes increased heart rate, but the weakened pulse is a result of dehydration and decreased blood volume. It is important to recognize this symptom as it indicates a serious medical emergency and immediate medical attention is required.

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  • 49. 

    What is the application and license fee for a technician or salesperson?

    • $49

    • $75

    • $99

    • $170

    Correct Answer
    A. $49
    Explanation
    The application and license fee for a technician or salesperson is $49.

    Rate this question:

Quiz Review Timeline (Updated): Jan 6, 2025 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 06, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 01, 2015
    Quiz Created by
    FSPTrainers
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