NCTI Exam I Questions and Answers
How can a less-experienced technician identify what non-standard symbols on the network
design maps represent? - ANSWERS-The legend at the bottom of the network design map that
defines the map symbols, cable types, and amplifier data.
What is the RF distribution tap value indicated on the tap face plate by a sticker or number
stamped into the housing? - ANSWERS-The signal loss between the tap downstream input port
and the tap ports
How can a distribution amplifier be identified in the network or on a network design map? -
ANSWERS-The distribution amplifier has multiple downstream outputs.
How is the AC voltage separated from the RF signal in a distribution amplifier? - ANSWERS-By a
capacitor that passes RF but blocks the low frequency 60 hertz (Hz) AC voltage which finds a low
resistance path through the RF choke that blocks RF.
What is the expected DC voltage on most hybrid fiber coax (HFC) network equipment? -
ANSWERS-+24 VDC, ± 0.5 V.
What term describes the frequency spectrum into an amplifier having higher amplitude at low
frequencies than the high frequencies? - ANSWERS-Negative tilt.
When configuring the input stage of a distribution amplifier, what element values can vary from
those in the amplifier tombstone, depending on the input amplitude measurements? -
ANSWERS-The input equalizer and attenuator pad values.
What value of interstage equalizer should be installed if the associated amplifier tombstone
field is blank and the amplifier output slope is 7 dB? - ANSWERS-The default factory value.
How can a less-experienced technician identify what non-standard symbols on the network
design maps represent? - ANSWERS-The legend at the bottom of the network design map that
defines the map symbols, cable types, and amplifier data.
What is the RF distribution tap value indicated on the tap face plate by a sticker or number
stamped into the housing? - ANSWERS-The signal loss between the tap downstream input port
and the tap ports
How can a distribution amplifier be identified in the network or on a network design map? -
ANSWERS-The distribution amplifier has multiple downstream outputs.
How is the AC voltage separated from the RF signal in a distribution amplifier? - ANSWERS-By a
capacitor that passes RF but blocks the low frequency 60 hertz (Hz) AC voltage which finds a low
resistance path through the RF choke that blocks RF.
What is the expected DC voltage on most hybrid fiber coax (HFC) network equipment? -
ANSWERS-+24 VDC, ± 0.5 V.
What term describes the frequency spectrum into an amplifier having higher amplitude at low
frequencies than the high frequencies? - ANSWERS-Negative tilt.
When configuring the input stage of a distribution amplifier, what element values can vary from
those in the amplifier tombstone, depending on the input amplitude measurements? -
ANSWERS-The input equalizer and attenuator pad values.
What value of interstage equalizer should be installed if the associated amplifier tombstone
field is blank and the amplifier output slope is 7 dB? - ANSWERS-The default factory value.
