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DIGITAL TECHNICIAN CONVENTIONAL QUESTIONS WITH VERIFIED ANSWERS ALREADY GRADED A+
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DIGITAL TECHNICIAN CONVENTIONAL QUESTIONS WITH VERIFIED ANSWERS ALREADY GRADED A+
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Name: Score:90 Multiple choice questions
Term 1 of 90
Why does the information in set-top box (STB) and modem diagnostic screens often appear
cryptic to a customer?
Coherent interference from ingress, or a beat from another channel modulator, landing
inside the QAM channel.
The screens use initials, acronyms, and jargon intended for people that are familiar with
the product.
To reduce the probability of an impairment event corrupting more than one bit in a
string.
Calling someone on the telephone and hearing somebody say "hello" on the receiving
end before speaking
Term 2 of 90
When defined by the standards bodies, Internet protocol television (IPTV) was intended to
have the same look and feel as TV delivered over what network medium?
A hybrid fiber/coax (HFC) network.
Switched digital video (sdv).
Real-time transport protocol (rtp).
Advanced audio coding (aac).
Term 3 of 90
Why do digital modulation channels have measurable analog parameters?
In combinations of two or three, they can be configured to construct any other logic
gate.
The NOT gate that follows the AND gate.
As decibels per millivolt per hertz (dBmV/Hz).
It is based on modulating an analog RF carrier with digital data.
,Term 4 of 90
The Moving Pictures Expert Group (MPEG) intended the MPEG-2 Program Stream (MPEG-2 PS)
to be used for what applications?
The system identification code (SID) assigned to the phone.
A resolution bandwidth (RBW) filter.
Intra-coded frame (I-frame) data.
Transport of digital TV (DTV) content over error-free media for recording and play-back
or copied and pasted into computer file folders.
Term 5 of 90
Which is the only 802.11 series of standards that operate at 900 MHz for reliable, slower-
throughput connectivity with Internet of Things (IoT) sensors in the customer's home?
802.11ah
1,024
802.89ah
spatial compression.
Term 6 of 90
The Moving Pictures Expert Group (MPEG) defines transport stream composition in the MPEG-2
Transport Stream (MPEG-2 TS) specification. What is periodically inserted in an MPEG-2 TS to
tell the decoder which packet identifiers (PID) are associated to reconstruct a program??
Program specific information (PSI).
A resolution bandwidth (rbw) filter.
The exclusive-nor (xnor) gate.
Switched digital video (sdv).
,Term 7 of 90
What does a cell phone seek when it tunes to its control channel frequency?
Coherent interference from ingress, or a beat from another channel modulator, landing
inside the QAM channel.
The system identification code (SID) assigned to the phone.
To help the receiver maintain synchronization with the modulator.
It is based on modulating an analog RF carrier with digital data.
Term 8 of 90
What is the decimal range of an 8-bit binary number?
0 - 510.
1 - 255.
0 - 128.
0 - 255.
Term 9 of 90
In the Internet protocol (IP) suite, which layer is the IP header information added to become an
IP packet that contains the IP addresses of both hosts?
The Internet Layer.
The trellis encoder stage.
Frames.
Spatial Compression.
, Term 10 of 90
What happens if the same video-on-demand (VOD) movie session is ordered by three separate
set-top box (STB) clients at three different times?
Coherent interference from ingress, or a beat from another channel modulator, landing
inside the QAM channel.
There is a separate unicast stream for each client, or three unicast streams.
When the digital TV (DTV) channel is multiplexed with other DTV channels in the
headend.
Additional revenue by adding new services or upgrading existing services.
Term 11 of 90
When Internet protocol (IP) hybrid set-top boxes (STB) are used to integrate Internet protocol
TV (IPTV) into a broadband cable network, how much involvement does the operator have
with virtual multichannel video programming distributors (vMVPD), streaming devices, and
content listings?
Mpeg-1.
Minimal.
Spectral Density.
Frames.
Term 12 of 90
What type of applications are error vector magnitude (EVM) expressions best suited?
Lossless.
Applications that have small random noise-like errors.
Mpeg-1.
Calling someone on the telephone and hearing somebody say "hello" on the receiving
end before speaking
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