Field tech 1 question and answers graded A+ already 2023
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Course
Field tech
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Field Tech
Field tech 1 question and answers graded A+ already 2023Upstream frequency ranges - correct answer between 5Mhz and 42Mhz
Downstream frequency ranges - correct answer Between 50MHz 860MHz
Upstream frequency ranges - correct answer 5MHz and 42 MHz
A 6 MHz downstream channel can hold - corre...
Field tech 1 question and answers graded A+ already 2023
Upstream frequency ranges - correct answer between 5Mhz and 42Mhz
Downstream frequency ranges - correct answer Between 50MHz 860MHz
Upstream frequency ranges - correct answer 5MHz and 42 MHz
A 6 MHz downstream channel can hold - correct answer 2-4 hd channels or 8-12 standard definition channels
Egress - correct answer When a signal leaks out of a cable
Ingress - correct answer when a signal leaks into a cable
Field technicians are responsible from - correct answer The tap to the CPE (customer premise equipement)
The most preferred BER is measured in ________ and is shown as _______ - correct answer Billions, 1.0E-09
The headend - correct answer Is the master facility for distributing signals over a cable television system
Charter passing modem receive levels (Rx) - correct answer between -10dBmv and +12dBmv
Charter passing modem transmit levels (Tx) - correct answer between 35dBmv and 50dBmv Charter passing MER - correct answer 35dBmv
HD channels - correct answer around 10Mbps each
standard definition channels - correct answer around 3-4Mbps each
QAM (qaudarature apmlitude modulation) - correct answer two amplitude modulated waveforms at the same frequency that are phase shifted by 90 degrees
QPSK (qaudrature phase shift keying) - correct answer 16 QAM, 64 QAM, and 256 QAM are all exapmples of QAM modulation.
RF loss or gain - correct answer is a relative measurement and is measured in dB (decibels)
RF measurements that are read from a meter are - correct answer absolute measurements and are measured in dBmV (decibels per millivolts)
Analog signal loss - correct answer is often gradual and reduces signal slowly
Digital signal loss - correct answer sudden where very small margin exists for difference between a good picture and no picture (called the cliff effect)
FM radio stations - correct answer found between frequencies 88 MHz and 108 MHz
frequency - correct answer number of fully completed cycles per second
Hertz - correct answer one complete cycle
MHz (megahertz) - correct answer refers to millions of cycles per second
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