NCTI 2-3 Exam Test Questions And Answers Verified
100% Correct
Which technique can be useful in helping others understand your emotional state and in
providing them with direction around how to help you restore balance? - ANSWER
Feel, Felt, Found technique
Which of the following best describes stereotyped thinking? - ANSWER Presuming that
all members of a group have certain characteristics.
The attribute of being "active" as a critical thinker means - ANSWER You observe and
take notes relevant to the issue.
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 steps are you using from the six-step troubleshooting
process - ANSWER Identify 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 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 ensure the resolution did not introduce any new problems, which step are you
using from the six-step troubleshooting process? - ANSWER Verify the solution.
To break the habit of negative self-talk cycle? - ANSWER Tell yourself "not now" and
move on to 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 statement describes creative problem-solving? - ANSWER
Thinking outside of the box and looking at problems from fresh perspective.
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 measurement 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.
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 DOCSIS layer is used by the CMTS to differentiate between cable modems? -
ANSWER The DOCSIS MAC Layer
, What was introduced in 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 85MHz.
In a 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
transmit power of the modems used to transmit 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 QAM channels with a throughput of 38
Mbps were bonded? - ANSWER 76 Mbps.
What are two features that were added in DOCSIS 3.1 to extend the viability of HFC
networks into the next decade? - ANSWER OFMD and LDPC
How does 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 Identify the problem
When analyzing a problem, what can the technician learn by asking the customer to
show or demonstrate the problem? - ANSWER The symptoms of the problem can be
viewed, and any unusual screens or customer entries can be identified.
When using a digital signal analyzer to troubleshoot data throughput in the DOCSIS
network, What is the minimum MER into the cable modem for 256-QAM carrier? -
ANSWER 32 dB or greater.
What layers of the OSI reference model are specific to cable networks and are present
only between DOCSIS modems and the CMTS? - ANSWER Layers 1 through 4
(Physical layer, Data Link Layer, Network Layer, and Transport Layer) are applied
between the DOCSIS modem and CMTS?
A Customer reports a problem of no dial tone (NDT). Upon inspection, the technical
notices that new carpeting has been installed. What should the technician do next? -
ANSWER Look for a cable that runs under the carpet, it is likely that the cable has a
short from the carpeting tack strip.
What is the likely problem when there is dail tone on one phone connected to an outlet,
but not on two other phones connected to two different outlets? - ANSWER An open
100% Correct
Which technique can be useful in helping others understand your emotional state and in
providing them with direction around how to help you restore balance? - ANSWER
Feel, Felt, Found technique
Which of the following best describes stereotyped thinking? - ANSWER Presuming that
all members of a group have certain characteristics.
The attribute of being "active" as a critical thinker means - ANSWER You observe and
take notes relevant to the issue.
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 steps are you using from the six-step troubleshooting
process - ANSWER Identify 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 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 ensure the resolution did not introduce any new problems, which step are you
using from the six-step troubleshooting process? - ANSWER Verify the solution.
To break the habit of negative self-talk cycle? - ANSWER Tell yourself "not now" and
move on to 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 statement describes creative problem-solving? - ANSWER
Thinking outside of the box and looking at problems from fresh perspective.
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 measurement 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.
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 DOCSIS layer is used by the CMTS to differentiate between cable modems? -
ANSWER The DOCSIS MAC Layer
, What was introduced in 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 85MHz.
In a 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
transmit power of the modems used to transmit 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 QAM channels with a throughput of 38
Mbps were bonded? - ANSWER 76 Mbps.
What are two features that were added in DOCSIS 3.1 to extend the viability of HFC
networks into the next decade? - ANSWER OFMD and LDPC
How does 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 Identify the problem
When analyzing a problem, what can the technician learn by asking the customer to
show or demonstrate the problem? - ANSWER The symptoms of the problem can be
viewed, and any unusual screens or customer entries can be identified.
When using a digital signal analyzer to troubleshoot data throughput in the DOCSIS
network, What is the minimum MER into the cable modem for 256-QAM carrier? -
ANSWER 32 dB or greater.
What layers of the OSI reference model are specific to cable networks and are present
only between DOCSIS modems and the CMTS? - ANSWER Layers 1 through 4
(Physical layer, Data Link Layer, Network Layer, and Transport Layer) are applied
between the DOCSIS modem and CMTS?
A Customer reports a problem of no dial tone (NDT). Upon inspection, the technical
notices that new carpeting has been installed. What should the technician do next? -
ANSWER Look for a cable that runs under the carpet, it is likely that the cable has a
short from the carpeting tack strip.
What is the likely problem when there is dail tone on one phone connected to an outlet,
but not on two other phones connected to two different outlets? - ANSWER An open
