单项选择题

Which of the following is a RF peer to peer mesh protocol used for lighting and other residential electronics？（）

A.Z-Wave
B.X10
C.CEBus
D.Wi-Fi

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单项选择题

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.

单项选择题

A customer notifies the integrator that the system keypad reports trouble at a window. Upon inspection， the customer finds the window closed and locked； the customer resets the system and it fails to correct the issue. Which of the following steps should the integrator take to resolve the issue？（）

A.Check that the sensor is not misaligned.
B.Clean the space between the sensor and the plate.
C.Toggle the tamper switch to reset the sensor.
D.Bypass the zone.

单项选择题

When installing a security system， which of the following connectors would be used to connect the security system to the telephone service demarcation？（）

A.RJ-31x
B.RJ-11
C.RS-232
D.DB-9

备案号：湘ICP备2022003000号-1

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