问题：单选题Which of the following is a RF peer to peer mesh protocol used for lighting and other residential electronics？（）A Z-WaveB X10C CEBusD Wi-Fi...
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问题：单选题Which of the following does an astronomical time clock do？（）A Determines the ambient light at night with a photocell.B Calculates sunset and sunrise times based on geographical area.C Determines the start and end of each of the seasons.D Synchronizes t...
问题：单选题The native resolution for 1080i is（）A 1920×1280B 1920×1080C 1280×1080D 1280×720...
问题：单选题When installing cables， which of the following is the BEST way of identifying the individual cables？（）A A cable chart mounted in the cabinetB A label at the tip of the cableC A label within six inches at each end of the cableD A penciled notation on th...
问题：单选题Which of the following BEST describes CAT5e？（）A Contains four pair of wires of various gaugeB Contains two wires in a red fireproof jacketC Contains four twisted pairs of wiresD Contains eight wires within a thick jacket with a rip cord...
问题：单选题Wires that are installed in air returns above a ceiling must be（）A fire proofB fiberglass coatedC plenum ratedD teflon coated...
问题：单选题Which of the following can cause ghosting in a video image？（）A Bent pin on an S-Video cableB Mislabeled component cablesC Defective HDMI cableD Improperly terminated coax cable...
问题：单选题Which of the following is the correct wiring order for an RJ-11 two line jack？（）A Black，Green，Red，YellowB Black，Red，Green，YellowC Red，Black，Green，YellowD Yellow，Red，Green，Black...
问题：单选题If the speakers in an installation are out of phase， this means that（）A the subwoofer is at the wrong angle.B the front and rear speakers are reversed.C the polarity of the speakers are reversed.D the angle of the speakers are incorrect....
问题：单选题Which of the following is MOST likely causing an intermittent flashing LED on an IR receiver when the remote control is not being used？（）A The power supply is faulty and should be replaced.B The heat from a heating， ventilation， and air conditioning （H...
问题：单选题According to Ohm’s Law， which of the following is correct？（）A As voltage increases， resistance decreasesB As amperage decreases， resistance decreasesC As resistance decreases， amperage increasesD As resistance increases， voltage increases...
问题：单选题Which of the following determines if the alarm should sound or an entry delay should start？（）A The sensor itselfB The way the zones are wiredC The zone typeD The digital dialer...
问题：单选题RG-6 coaxial cable is typically used in all of the following applications：（）A multi-room audio， telephone， intercom and temperature control.B thermostat， CCTV， smoke detectors and keypads.C home theater， lighting control and multi-room audio.D video， d...
问题：单选题Small in-ceiling speakers are BEST suited for（）A loud， bass intensive music （e.g. heavy metal， rock）.B providing a sub-woofer for great bass reproduction.C background music and blending in with decor.D the user who wants perfect sound reproduction....
问题：单选题Which of the following is the primary purpose of impedance matched volume control？（）A Maintains proper speaker phaseB Protects the amplifier from damageC Protects the digital systems from damageD Amplifies the speaker signal...
问题：单选题When certifying a CAT5 cable installation the integrator must perform which of the following tests？（）A Measure ImpedanceB Calculate LatencyC Measure AttenuationD Measure Resistance...
问题：单选题Each time the distance from the speaker is doubled， volume decreases by（）.A 3dBB 6dBC 12dBD 24dB...
