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NCTI FINAL EXAM PROGRESSION :FIELD TECH 2-3 TEST LATEST ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES|AGRADE$25.49
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NCTI FINAL EXAM PROGRESSION :FIELD TECH 2-3 TEST
LATEST 2023-2024 ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH RATIONALES|AGRADE
The attribute of being "active" as a critical thinker means - ANSWER- You
observe and take notes relevant to the issue.
What kind of reasoning is described as applying a general statement that you know
to be true to a new situation? - ANSWER- Deductive.
It is essential to pay attention to warning signs of stress overload. Poor attitude is
one of the behaviors that may indicate that you are overstressed. What are the
symptoms of poor attitude behavior? - ANSWER- A significant change in attitude
with a noticeable movement toward negative, hostile, cynical, or paranoid thoughts
You are at a customer's home and you are asking the customer whether the
problem is intermittent or constant. Which step are you using from the six-step
troubleshooting process? - ANSWER- Identifying the problem.
Why should you take the time to take notes and accurately record data at each job
location? - ANSWER- Notes and recorded data are tools that can help you
accurately remember events at a site that can help you determine a plan of action or
evaluate the decisions you made.
You are at a customer's home and you believe you have solved the problem. When
you check to be sure the resolution did not introduce any new problems, which step
are you using from the six-step troubleshooting process? - ANSWER- Verifying
the solution.
To break the habit of a negative self-talk cycle - ANSWER- Tell yourself "not
now" and move onto a positive thought whenever negative thoughts occur.
By taking control of the expectations you have, you are - ANSWER- More likely
to improve your motivation and be a better problem solver.
,Which of the following characterizes the successful troubleshooter? - ANSWER-
Someone with an inquisitive and relentless desire to solve and fix problems.
What must a technician be aware of when analyzing a digital TV (DTV) problem?
- ANSWER- There is frequently more than one contributor to a specific DTV
service problem.
After a digital TV (DTV) service problem has been analyzed and possible causes
considered, what is accomplished by isolating the various network elements? -
ANSWER- It narrows the scope of likely problem sources.
During which step of the six-step troubleshooting process for a digital TV (DTV)
service problem are quadrature amplitude modulation (QAM) channel
measurements typically taken? - ANSWER- Diagnosing symptoms.
When replacing a splitter to resolve a digital TV (DTV) service problem, what
does confirming the splitter output levels before attaching the output connectors
do? - ANSWER- Confirmation reinforces the technician's confidence that the
problem will be resolved by replacing the splitter.
Which of the following digital TV (DTV) trouble calls could have been avoided
with customer education about the product? - ANSWER- The digital set-top box
(STB) overheats.
When troubleshooting a digital TV (DTV) authorization issue, what can be verified
using the set-top box (STB) diagnostic page? - ANSWER- STB reception of
authorization message data.
Which type of set-top box (STB) operates more like Data Over Cable Service
Interface Specification (DOCSIS) cable modems with return channels on the same
frequencies used for cable modems? - ANSWER- STB with DOCSIS Set-top
Gateway (DSG) client software and embedded DOCSIS modems.
Because the spectral density of a quadrature amplitude modulation (QAM) channel
is much higher than that of an analog TV channel, what is done to ensure equal
power in all channels in a network with analog and digital modulation channels? -
ANSWER- Operate the analog TV channels at higher amplitude level than the
QAM channels.
, What does a set-top box (STB) diagnostic page of a quadrature amplitude
modulation (QAM) channel showing signal-to-noise ratio (SNR) near or below 30
dB indicate? - ANSWER- The QAM channel quality is on the edge for reliable
reception, and the source of the problem is likely in the distribution network or
customer premises.
Which Data over Cable Service Interface Specification (DOCSIS) layer is used by
the cable modem termination system (CMTS) to differentiate between cable
modems? - ANSWER- The DOCSIS Media Access Control (MAC) Layer.
What was introduced in Data Over Cable Service Interface Specification
(DOCSIS) 3.0 to allow enough bandwidth for upstream carriers from previous
DOCSIS versions? - ANSWER- The option to increase the top frequency of the
upstream to 85 MHz.
In a Data Over Cable Service Interface Specification (DOCSIS) network, why is
the data throughput over the return or upstream path typically less than the
throughput of data over the forward or downstream path? - ANSWER- Compared
to the downstream path, the narrower bandwidths and lower orders of modulation
used to transport data over the return path cause the downstream and upstream data
throughput to be unequal or asymmetrical.
What would be the downstream throughput if two quadrature amplitude
modulation (QAM) channels with a throughput of 38 megabits per second (Mbps)
were bonded? - ANSWER- 76 Mbps.
What are two features that were added in Data Over Cable Service Interface
Specification (DOCSIS) 3.1 to extend the viability of hybrid fiber/coax (HFC)
networks into the next decade? - ANSWER- Orthogonal frequency division
multiplexing (OFDM) and low-density parity-check (LDPC).
How does Internet protocol (IP) multicast differ from IP broadcast? - ANSWER-
IP multicast traffic is only sent to specific modem addresses on the network; IP
broadcast traffic is sent to all modems on the network.
Which step in the troubleshooting process requires a discussion with the customer
to gather more detail about the problem? - ANSWER- Step 1: Identify the
problem.
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