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Advanced Electrical/Mechanical Systems MCQ

1. Define 'zone'.

Answer

Correct Answer: A specific area of protection; a portion of a large protected area.

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2. What is the common unit of electrical power?

Answer

Correct Answer: Watt

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3. What is the product of rated input voltage multiplied by the rated current called?

Answer

Correct Answer: Volt/Amp (VA) Rating

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4. What causes voltage drop?

Answer

Correct Answer: (1) wire size and (2) length of wire runs

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5. What two factors cause voltage drop?

Answer

Correct Answer: Wire size and length of wire runs

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6. What is the term for electrical pressure that exists between two points?

Answer

Correct Answer: Voltage

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7. What is a Volt?

Answer

Correct Answer: A unit of electromotive force.

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8. What does Underwriters Laboratories do?

Answer

Correct Answer: Product safety testing and certification

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9. What does U.L. stand for?

Answer

Correct Answer: Underwriters Laboratories

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10. What is a Time-Delay Relay?

Answer

Correct Answer: A relay for automatically locking or unlocking a locking unit after a short, fixed time interval.

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11. What does time delay do?

Answer

Correct Answer: Delay transmitting a signal

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12. What is the throw of a Deadbolt or Latch Bolt?

Answer

Correct Answer: The maximum projection of a deadbolt or latch bolt when the bolt is fully projected.

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13. What does a terminal attach to?

Answer

Correct Answer: Board, bus, or block

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14. What is the primary purpose of a terminal?

Answer

Correct Answer: To handle one or more conductors

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15. What is the purpose of a terminal block?

Answer

Correct Answer: To provide a place for safe and convenient interconnection of current-carrying conductors.

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16. What does the word "Shall" indicate?

Answer

Correct Answer: A mandatory requirement

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17. In a series circuit, _______.

Answer

Correct Answer: The same current flows through each part of the circuit in sequence

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18. In a series circuit, _______ flows through each part of the circuit in sequence.

Answer

Correct Answer: The same current

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19. What is the name given to doors that return to the closed position when opened and released?

Answer

Correct Answer: Self-Closing Doors

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20. What is the purpose of a self-closing door?

Answer

Correct Answer: To return to the closed position

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21. What is the secondary?

Answer

Correct Answer: Transformer winding that receives energy by electromagnetic induction from the primary

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22. In a transformer, the secondary winding:

Answer

Correct Answer: Receives energy by electromagnetic induction from the primary

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23. What does Secured Side refer to?

Answer

Correct Answer: The side of an opening that is locked and requires a key, card, code, etc. to enter.

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24. What does "Reset Time" refer to?

Answer

Correct Answer: The time required to return the output to its original condition.

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25. What is a regulated power supply?

Answer

Correct Answer: A power supply that provides a constant output regardless of input voltage.

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26. What does a rectifier do?

Answer

Correct Answer: Converts alternating current to direct current

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27. What does reactance measure?

Answer

Correct Answer: Opposition offered to the flow of alternating current by inductance (xl) or capacitance (xc)

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28. What is the maximum voltage at which an electric component can operate for extended period, without undue degradation or safety hazard?

Answer

Correct Answer: Rated Voltage

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29. What is the primary winding in a transformer?

Answer

Correct Answer: The transformer winding that receives the energy from a supply circuit.

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30. What is the main feature of power operated doors?

Answer

Correct Answer: They are opened and closed electrically, pneumatically, or mechanically.

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31. What is the definition of polarity?

Answer

Correct Answer: The positive or negative orientation of a signal or power source.

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32. What is the definition of parallel?

Answer

Correct Answer: A method of connecting an electric circuit whereby each element is connected across the other.

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33. What does "Non-fire labeled devices for swinging doors installed to facilitate safe egress of persons" mean?

Answer

Correct Answer: Panic Exit Hardware

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34. What is the purpose of panic exit hardware?

Answer

Correct Answer: To facilitate safe egress of persons in case of an emergency

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35. What is the output voltage?

Answer

Correct Answer: The designed power source produced by a power supply to operate equipment.

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36. What is the meaning of Operating Voltage?

Answer

Correct Answer: The voltage by which a system operates; a nominal voltage with a specified tolerance applied

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37. What is the design voltage range for a system specified 12 volts +/- 10% of nominal?

Answer

Correct Answer: 10.8 to 13.2 volts DC

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38. What is the unit of measurement for an operating temperature?

Answer

Correct Answer: Degrees Fahrenheit (F) or degrees centigrade (C)

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39. What is the relationship between voltage, current and resistance according to Ohm's Law?

Answer

Correct Answer: E = IR; I = E/R; R = E/I

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40. What is the value of voltage when the current is 1A and resistance is 1Ω?

Answer

Correct Answer: 1V

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41. What does the unit "ohm" measure?

Answer

Correct Answer: Resistance (R) and impedance (Z).

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42. What is the purpose for which a building or portion thereof is used or intended to be used?

Answer

Correct Answer: Occupancy

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43. What does NC stands for in a circuit?

Answer

Correct Answer: Normally Closed

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44. What is noise?

Answer

Correct Answer: Unwanted and/or unintelligible signals picked up on a cable circuit.

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45. What is NEMA?

Answer

Correct Answer: National Electrical Manufacturers Association

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46. What is NFPA's premier source?

Answer

Correct Answer: Development, publication and dissemination of knowledge about fire and life safety.

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47. What does NEC stand for?

Answer

Correct Answer: National Electrical Code

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48. What is a momentary switch?

Answer

Correct Answer: A spring-loaded contact that, when pressed, closes two contacts. When pressure is removed, the contacts open.

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49. What is the Mode of Operation?

Answer

Correct Answer: The specified operational condition of a switch, lock, door system, and so forth

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50. What is the function of an MOV?

Answer

Correct Answer: Protecting electric equipment from high-transient voltage

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51. What is the main function of a Metal Oxide Varistor (MOV)?

Answer

Correct Answer: Protect electric equipment from high-transient voltage

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52. What three parts does a means of egress consist of?

Answer

Correct Answer: The exit access, the exit and the exit discharge

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53. What is the Maximum Rating?

Answer

Correct Answer: The absolute maximum condition in which a device is designed to operate.

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54. What does the term "Listed" refer to?

Answer

Correct Answer: Equipment or materials included in a list published by an authorizing organization.

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55. What does the term "Listed" mean?

Answer

Correct Answer: Refers to equipment or materials included in a list published by an authorizing organization.

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56. What is the full form of LED?

Answer

Correct Answer: Light-Emitting Diode

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57. What is a latchbolt?

Answer

Correct Answer: A device for automatically retaining a door in the closed position upon its closing

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58. A latchbolt is a ____.

Answer

Correct Answer: Device for automatically retaining a door in the closed position

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59. What does 'latch' mean in the context of electronic circuits?

Answer

Correct Answer: The locking in of a circuit by means of a holding contact

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60. What is the purpose of a latch?

Answer

Correct Answer: To lock in a circuit by means of a holding contact

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61. What does "AHJ" stand for in the context of labeled equipment?

Answer

Correct Answer: Authorized Hazardous Materials Jurisdiction

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62. What is the key to operating a group of cylinders called?

Answer

Correct Answer: Master key

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63. What is a junction box?

Answer

Correct Answer: A protective enclosure for connecting circuit wires.

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64. What does a junction do in a circuit?

Answer

Correct Answer: Two or more wires are connected

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65. What is the main purpose of a jumper?

Answer

Correct Answer: To make a connection between terminals

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66. What is Input Voltage?

Answer

Correct Answer: The designed power source requirement needed by equipment in order to operate properly

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67. What does "ingress" mean?

Answer

Correct Answer: The side of an opening from which traffic enters.

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68. From which side does traffic enters?

Answer

Correct Answer: Ingress side

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69. What is induction?

Answer

Correct Answer: An influence exerted by a charged body or by a magnetic field on neighboring bodies without apparent communication.

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70. What is an inactive leaf?

Answer

Correct Answer: One door of a pair of doors that ordinarily is latched closed

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71. What is the symbol for impedance?

Answer

Correct Answer: Z

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72. What is impedance?

Answer

Correct Answer: The opposition in an electrical circuit to the flow of an alternating current (AC).

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73. What does HES stand for?

Answer

Correct Answer: Manufacturer of the best electro-mechanical access control devices in the world!

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74. What is the international unit of frequency equal to one cycle per second?

Answer

Correct Answer: Hz

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75. What does Hz stand for?

Answer

Correct Answer: Hertz

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76. What is a heat sink used for?

Answer

Correct Answer: To transfer a rise in temperature

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77. What is a heat sink?

Answer

Correct Answer: A device used to transfer heat to the surrounding air, liquid, or larger mass

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78. What does the term "Hard-Wired" refer to?

Answer

Correct Answer: Connections that require the use of wire conductors.

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79. What does hard-wired refer to?

Answer

Correct Answer: Groups of connections that require the use of wire conductors.

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80. What does "L" in LHR (Left Hand Reverse) stand for?

Answer

Correct Answer: Left Hand

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81. What does "Ground" refer to in the context of electrical circuits?

Answer

Correct Answer: The portion of a circuit that is connected to a buried metallic object.

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82. What is the purpose of an electrical ground?

Answer

Correct Answer: To serve as a complete electrical circuit.

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83. What is the purpose of fire exit hardware?

Answer

Correct Answer: To facilitate safe egress of persons in the event of a fire

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84. What is the main use of fire exit hardware?

Answer

Correct Answer: To provide safe egress of persons in the event of a fire

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85. What is the purpose of a fire door assembly?

Answer

Correct Answer: To provide a specific degree of fire protection to the opening

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86. What is the main purpose of Finish Hardware?

Answer

Correct Answer: To provide a finished appearance to a room or building

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87. What is Fail Secure also known as?

Answer

Correct Answer: Non-Fail Safe (NFS)

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88. What does "Fail Secure" mean?

Answer

Correct Answer: Lock or locking device that remains locked on loss of power.

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89. What does "Fail Safe" mean?

Answer

Correct Answer: Lock or locking device that remains unlocked on loss of power.

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90. What is an emergency release?

Answer

Correct Answer: A means of overriding a lock and retracting the bolt in an emergency.

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91. What is EMF?

Answer

Correct Answer: Pressure or voltage; the force that causes current to flow in a circuit.

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92. What is an electromagnet?

Answer

Correct Answer: A coil of wire that produces a strong magnetic field when current is sent through the coil

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93. What is an electric strike?

Answer

Correct Answer: An electro-mechanical door locking device that will unlock the door when electrical power is applied to it

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94. What does fail-safe configuration mean in the context of an electric strike?

Answer

Correct Answer: Normally locked when power is applied and unlocked when power is interrupted

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95. What is the purpose of an egress side?

Answer

Correct Answer: Traffic exits from the egress side

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96. What is the definition of "Egress Side"?

Answer

Correct Answer: The side of an opening from which traffic exits

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97. What is a Door Closer?

Answer

Correct Answer: A device that, where applied to a door and frame, causes an open door to close by mechanical force

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98. What is the purpose of a dogging device?

Answer

Correct Answer: To fasten the cross bar in the fully depressed position

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99. What is the definition of delay?

Answer

Correct Answer: A period of time before or during an event

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100. What is a deadlatch?

Answer

Correct Answer: A latch in which the latchbolt is positively held in the projected position by an auxiliary mechanism

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101. What is a deadbolt?

Answer

Correct Answer: A bolt operated manually and not actuated by springs

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102. What is a circuit?

Answer

Correct Answer: The path through which electrical energy flows

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103. What does 'Case' refer to in the context of locks?

Answer

Correct Answer: A housing for a lock mechanism

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104. What is the cam?

Answer

Correct Answer: A rotating eccentric piece attached to the end of a cylinder plug to actuate a lock or latch mechanism.

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105. What does a cam do?

Answer

Correct Answer: A cam actuates a lock or latch mechanism.

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106. What is a coordinator?

Answer

Correct Answer: A device used to prevent the active leaf from closing before the inactive leaf closes.

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107. What is the purpose of a coordinator?

Answer

Correct Answer: To prevent the active leaf from closing before the inactive leaf closes.

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108. What is the purpose of a code?

Answer

Correct Answer: A document that provides comprehensive guidance on a specific topic

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109. What is the purpose of a Bolt Position Switch?

Answer

Correct Answer: To monitor whether the locking bolt is in the locked (projected) or unlocked (retracted) position.

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110. What is the projectable member of a lock or latch mechanism that engages the door frame and the strike called?

Answer

Correct Answer: Bolt

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111. What is a block diagram?

Answer

Correct Answer: A drawing that shows the relationship of equipment in a system.

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112. What is the trade association for North American manufacturers of commercial builders hardware?

Answer

Correct Answer: Builder’s Hardware Manufacturers Association (BHMA)

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113. What does BHMA stand for?

Answer

Correct Answer: Builder’s Hardware Manufacturers Association

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114. What does "standby" mean in this context?

Answer

Correct Answer: A means of automatically switching over to stored battery power during local primary power failure.

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115. What does A/H stand for?

Answer

Correct Answer: Ampere/Hour

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116. What is one ampere/hour?

Answer

Correct Answer: A measurement of a battery’s capacity

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117. What is the American National Standards Institute?

Answer

Correct Answer: A federation of trade, technical, and professional organizations, government agencies.

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118. What is the full form of ANSI?

Answer

Correct Answer: American National Standards Institute

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119. What is an actuator?

Answer

Correct Answer: The mechanism of the switch or switch enclosure that operates the contacts.

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120. Which leaf is the one to which the lock is applied?

Answer

Correct Answer: Active Leaf

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121. What is the definition of Access Control?

Answer

Correct Answer: The means of influencing and regulating the flow of persons through a door (entry and/or exit).

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