NCTI HSD EXAM NEWEST 2025 ACTUAL
EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
if a customer already has television service and is adding
high speed data service, what should be checked on the
digital television channels? Correct Answer intermittent
operation, which is a symptom of noise interference in the
downstream
Installing a cable modem and router in a closet or utility
room is simplified by having what items in the room?
Correct Answer working computer, platform for modem
and router, twisted pair network cable with standard
configurations
what version of the docsis specification included the option
to increase the tap frequency of the upstream to 85 Mhz?
Correct Answer Docsis 3.0
What device can be installed with a cable modem to
enable internet access to two or more devices in the
customer premises? Correct Answer router with a built in
multi ethernet switch
Why is it good practice to review the service work order
with the customer before beginning a high speed data
,service installation? Correct Answer to verify account
information and to confirm the high speed data order
Some cable operators charge an additional fee when the
amount of downloaded data during a billing cycle exceeds
a prescribed limit. How might a customer unknowingly
approach these limits? Correct Answer by
streaming/downloading high content data
i.e movies, tv shows in high definition
if the customer demonstrates that they are internet savy,
what should be the next step in the customer education
portion of the high speed data server installation? Correct
Answer Direct the customer to the cable operators web
page to show them what information is available and to
help them setup their email
If the customer is an internet novice, what would be the
benefit of saving your company's website as their home
page? Correct Answer They might appreciate having easy
access to a website that contains links to their email and
other useful or interesting links
When helping a new customer set up email for the first
time, what suggestion should you make regarding the
customers login and password? Correct Answer write it
down and keep it in a safe place
Where should the customer be encouraged to go for
information and questions before calling in? Correct
Answer online, to the website, FAQ page
,Which of the following describes the primary source of
attenuation in the return path? Correct Answer attenuation
in the return path is primarily due to the coax cable
which of the following describes long loop automatic gain
control? Correct Answer long loop AGC adjusts the
transmit levels of the customer premise equipment
the use of a directional coupler requires which of the
following adjustments in the return paths? Correct Answer
Each return amplifier must be adjusted so that the levels
received at the next amplifier are within 15 db of eachother
which of the following describes the typical sub band
return frequency design for a cable modem? Correct
Answer most cable modems are designed to operate
above 28 and below 38 mhz
if the drop loss at the ground block is 3.2 db and is
connected to a three way splitters hot leg and then
connected to the 9 Db leg of a directional coupler what will
be the total return loss Correct Answer add them together
for the total return
what are some possible causes of signal reflections?
Correct Answer loose or bad connections in the drop
system and un-terminated tap ports, especially on low
value taps
, Once signals are ready for transmission out of the
headend, what is the last thing that needs to be done to
the signals? Correct Answer Multiplexed.
In the tree-and-branch architecture, how is the
downstream signal from the trunk fed to the distribution
branches? Correct Answer Within each trunk amplifier, a
portion of the downstream is fed to a bridger amplifier to
boost the signal before being split and routed to the
distribution branches.
What is a common solution when congestion from modem
activity and traffic becomes unacceptable in a HFC
Hybrid fiber/coax
network? Correct Answer Node splitting, the subdividing
of serving areas into two or more smaller serving areas.
How can a less-experienced technician identify what non-
standard symbols on the network design maps represent?
Correct Answer The legend at the bottom of the network
design map that defines the map symbols, cable types,
and amplifier data.
What technologies are defined in DOCSIS 4.0 to help
sustain the HFC
Hybrid fiber/coax
network infrastructure for several more years? Correct
Answer FDX Full Duplex DOCSIS and ESD Extended
Spectrum DOCSIS.
EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
if a customer already has television service and is adding
high speed data service, what should be checked on the
digital television channels? Correct Answer intermittent
operation, which is a symptom of noise interference in the
downstream
Installing a cable modem and router in a closet or utility
room is simplified by having what items in the room?
Correct Answer working computer, platform for modem
and router, twisted pair network cable with standard
configurations
what version of the docsis specification included the option
to increase the tap frequency of the upstream to 85 Mhz?
Correct Answer Docsis 3.0
What device can be installed with a cable modem to
enable internet access to two or more devices in the
customer premises? Correct Answer router with a built in
multi ethernet switch
Why is it good practice to review the service work order
with the customer before beginning a high speed data
,service installation? Correct Answer to verify account
information and to confirm the high speed data order
Some cable operators charge an additional fee when the
amount of downloaded data during a billing cycle exceeds
a prescribed limit. How might a customer unknowingly
approach these limits? Correct Answer by
streaming/downloading high content data
i.e movies, tv shows in high definition
if the customer demonstrates that they are internet savy,
what should be the next step in the customer education
portion of the high speed data server installation? Correct
Answer Direct the customer to the cable operators web
page to show them what information is available and to
help them setup their email
If the customer is an internet novice, what would be the
benefit of saving your company's website as their home
page? Correct Answer They might appreciate having easy
access to a website that contains links to their email and
other useful or interesting links
When helping a new customer set up email for the first
time, what suggestion should you make regarding the
customers login and password? Correct Answer write it
down and keep it in a safe place
Where should the customer be encouraged to go for
information and questions before calling in? Correct
Answer online, to the website, FAQ page
,Which of the following describes the primary source of
attenuation in the return path? Correct Answer attenuation
in the return path is primarily due to the coax cable
which of the following describes long loop automatic gain
control? Correct Answer long loop AGC adjusts the
transmit levels of the customer premise equipment
the use of a directional coupler requires which of the
following adjustments in the return paths? Correct Answer
Each return amplifier must be adjusted so that the levels
received at the next amplifier are within 15 db of eachother
which of the following describes the typical sub band
return frequency design for a cable modem? Correct
Answer most cable modems are designed to operate
above 28 and below 38 mhz
if the drop loss at the ground block is 3.2 db and is
connected to a three way splitters hot leg and then
connected to the 9 Db leg of a directional coupler what will
be the total return loss Correct Answer add them together
for the total return
what are some possible causes of signal reflections?
Correct Answer loose or bad connections in the drop
system and un-terminated tap ports, especially on low
value taps
, Once signals are ready for transmission out of the
headend, what is the last thing that needs to be done to
the signals? Correct Answer Multiplexed.
In the tree-and-branch architecture, how is the
downstream signal from the trunk fed to the distribution
branches? Correct Answer Within each trunk amplifier, a
portion of the downstream is fed to a bridger amplifier to
boost the signal before being split and routed to the
distribution branches.
What is a common solution when congestion from modem
activity and traffic becomes unacceptable in a HFC
Hybrid fiber/coax
network? Correct Answer Node splitting, the subdividing
of serving areas into two or more smaller serving areas.
How can a less-experienced technician identify what non-
standard symbols on the network design maps represent?
Correct Answer The legend at the bottom of the network
design map that defines the map symbols, cable types,
and amplifier data.
What technologies are defined in DOCSIS 4.0 to help
sustain the HFC
Hybrid fiber/coax
network infrastructure for several more years? Correct
Answer FDX Full Duplex DOCSIS and ESD Extended
Spectrum DOCSIS.
