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NTCI Questions with complete solution 2023
NTCI Questions with complete solution 2023
[Meer zien]Voorbeeld 2 van de 7 pagina's
Voorbeeld 2 van de 7 pagina's
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Voorbeeld van de inhoud
NTCI: Troubleshooting AdvancedServices
To resolve where the source of a digital video problem lies, a technician uses... - correct
answer The divide-and-conquer method for troubleshooting, which can begin with
measurements on customer premise equipment that offer easier access for testing
In addition to being accurate and detailed, a successful troubleshooter knows that... -
correct answer A critical step in troubleshooting is verifying the signal levels and
signal quality at the tap to establish the baseline performance for the installation.
In troubleshooting a digital-to-analog converter, try the suspect converter in a different,
working outlet to... - correct answer Determine if the original outlet needs to be
repaired.
Digital set-top box diagnostics can aid a technician with which of the following
parameters while troubleshooting? - correct answer Service authorization, received
signal quality, and return path operation.
If a digital video service customer reports that the set-top box does not respond to the
remote control, what is the quickest and easiest thing to do first? - correct answer
Check the line of sight between the remote control and the set-top box.
When a communications issue is suspected in an HDMI device, the technician should...
- correct answer Try an alternate HDMI port on the device, if one is available.
When equipment is connected via the component video output... - correct answer
Format settings for vertical resolution, scan method, and aspect ratio may need to be
adjusted manually.
To eliminate possible causes of audio issues, a technician can... - correct answer
Check the set-top box and the television set to ensure audio connections have been
made correctly.
Which of the following are among the reasons why a customer may not be able to order
video-on-demand? - correct answer VOD or pay-per-view credit limits might have
been reached, indicating that purchases have not been collected due to a return path
problem.
If a digital video service customer calls with an issue related to not being able to delete
a recorded program, it could be caused by... - correct answer the program is being
played on a second set-top-box on a whole house or multi-room digital video recording
(DVR) configuration.
, Quality of service (QOS), as measured by availability, describes the... - correct answer
Ratio of time that a system or service is available for use to total time.
To determine if objective network data measured by quality of service (QOS)
parameters match a customer's overall satisfaction level... - correct answer Cable
operators use a quality of experience (QOE) measurement based on mean opinion
score (MOS) and perceptual quality metrics (PQM).
Perceptual quality metrics (PQM) provide cable operators with... - correct answer An
objective measurement of human visual perception based on a statistical analysis of
quality of service (QOS) measurements and MPEG encoding data.
Chrominance subsampling, which usually takes place in the studio environment, is the
process of... - correct answer Compressing a raw digital video file so that each pixel
retians its own luminance information, but the chrominance is averaged from the original
pixel pairs to a 4:2:2 profile
In intraframe coding, data for redundant pixel arrays are... - correct answer
Transmitted once with data that tells the decoder where, on the single frame, the array
is displayed.
Interframe coding, a form of temporal compression, uses... - correct answer An intra-
coded frame to compare picture information between consecutive frames, using motion
vectors, which results in predicted frames (P-frames).
Rate shaping, a possible point of failure for digital video in the headend, describes... -
correct answer The process of managing the data rates of multiplexed individual
channels on a quadrature amplitude modulation (QUM) carrier.
Some of the common causes of digital video impairments in a distribution network
include... - correct answer Incorrect signal levels, common path distortion caused by
corroded connections and impedance mismatches due to unterminated taps.
Regarding digital video quality at the customer premises, - correct answer (QOS)
metrics are important to help identify potential problems before they can affect a
customer's more subjective (QOE).
Although off-network programming is not the responsibility of a cable operator. - correct
answer A technician needs to understand that customers viewing video through the
internet may report problems with a video program that has not been scrutinized by the
cable operator.
The digital artifacts referred to as blockiness, blurring, mosquito noise, and contour
represent... - correct answer Video capture and processing artifacts that cannot be
addressed at the customer premises.
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