RCDD-001 試験問題を無料オンラインアクセス

Using the sound pressure level (SPL) method of approximating distance and power, calculate the power
required to produce 89 dB at 4 m (13.1 ft) with a loud speaker that is rated at a SPL of 95 dB. What input
power level (in watts) is required to appropriately power the speaker?

• A.8 watts
• B.4 watts
• C.1 watt
• D.2 watts

All entrance conduits should be equipped with a plastic or nylon line with a MINIMUM test rating of
_________ pulling tension.

• A.90 kg (200 lbs)
• B.45.4 kg (100 lbs)
• C.113 kg (250 lbs)
• D.68 kg (150 lbs)
• E.22.7 kg (50 lbs)

Which one of the following is part of the security metric to consider in selecting the appropriate labels for
an administrative system?

• A.Temperature rating
• B.Moisture content
• C.Smudge resistance
• D.Adhesive type
• E.Tamper resistance

MAC addresses are _____________ bits in length.

• A.16
• B.48
• C.32
• D.24
• E.64

You are designing a 4.9 GHz microwave system that is using rectangular waveguide from the transceiver
to the inside wall of the shelter and an antenna using elliptical waveguide from the antenna to the outside
wall of the shelter. The antenna has been designed to be placed 200 ft up on a 250 ft tower. What device
will you specify that will best interconnect the two different waveguides?

• A.Elliptical waveguide connector
• B.Elliptical waveguide flange
• C.Elliptical wave guide pass through
• D.Elliptical wave guide clamp