BICSI Registered Communications Distribution Designer - RCDD 模擬練習
You are extending 1000 MHz video service from your existing headend to a new equipment room (ER). Your existing incoming video signal is plus (+) 15 dBmV. You have three two-way splitters with a total of minus (-) 15 dB. You are adding 122 m (400 ft) of series 11 (RG 11) cable with a minus (-) 18 dB with eight single end F-connectors with a total of minus (-) 1.2 dB. From the selections below, what is the MINIMUM gain amplifier required in the headend room?
正解: D
解説: (PassTest メンバーにのみ表示されます)
Data representation including code translations, compressions, and encryptions is performed by what layer of the OSI model?
正解: C
The decision regarding the number of optical fibers to install (fiber strand count) in a backbone depends largely on all of the following EXCEPT:
正解: E
Multiples of the basic frequency of an electrical waveform are called:
正解: D
The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. What is the signal-to-noise ratio (SNR) (dB) at the receiver input?
正解: A
A security program consists of three independent components. They are electronic, architectural, and:
正解: B
It is important to keep all underfloor cabling systems very neat and orderly. Cabling systems must be managed to ensure that air flow is not impeded by the height or volume of underfloor cabling. Keeping copper communications cabling properly separated from is one design approach. To resolve this:
正解: C
When considering the DAS, which component acts as a bidirectional antenna?
正解: E
A ______ intercepts a file and stores it temporarily in queue until a peripheral device (e.g. printer) is available.
正解: A
解説: (PassTest メンバーにのみ表示されます)
Geographically speaking, a __________ covers an area associated with an individual's work space.
正解: B