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.
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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 is the recommended placement of the rear surround speakers in a 5.1 surround installation？（）A Directly to the left and right and slightly in front of the listenerB Directly to the left and right and slightly behind the listenerC Above and behind the listenerD Directly behind the listener
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 （HVAC） register is being received as infrared noise.C The radio frequency interference （RFI） is being received as noise.D A plasma display is emitting infrared noise.
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 the local time displayed with the official world time.
问题：单选题When integrating a media server into a home theater， which of the following terms BEST describes the technology used to protect the interest of copyright holders （e.g. multimedia content）？（）A Digital Rights Management （DRM）B MPEG Layer-3 （MP3）C Internet Key Exchange （IKE）D Content Management System （CMS）
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 is a RF peer to peer mesh protocol used for lighting and other residential electronics？（）A Z-WaveB X10C CEBusD Wi-Fi
问题：单选题Which of the following video outputs from a media PC provide the BEST picture quality， when connecting the media PC to a projector？（）A SVGAB VGAC S-VideoD DVI
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， digital cable， and satellite applications.
问题：单选题Which of the following is a diplexer used for？（）A Allows two satellite tuners to use the same dish.B Connects the low noise block down converter （LNB） to the multi-switch.C Combines satellite and over the air （OTA） signals.D Allows one LNB to use two satellites.
问题：单选题Each time the distance from the speaker is doubled， volume decreases by（）.A 3dBB 6dBC 12dBD 24dB
问题：单选题The native resolution for 1080i is（）A 1920×1280B 1920×1080C 1280×1080D 1280×720
