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NCTI 2, NCTI Jones, ROC II, Course 1, NTCI: Troubleshooting Advanced Services
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NCTI 2, NCTI Jones, ROC II, Course 1, NTCI:Troubleshooting Advanced Services
What is the definition of a home media network? Correct Ans - the
home media network is defined as a collection of computer and media devices
connected together on a single network
Broadband cable operators view tv everwhere as the answer to what
competitive service? Correct Ans - the streaming of media, television
programs, movies, music, into data packets that can be received over the
internet or OTT
How many home network devices categories have been defined by the DLNA?
Correct Ans - , dms, dmp, dmr, dmc, dmpr
what is the role of the router in the home media network Correct Ans -
operating between the modem and the rest of the network, the router assigns
internet protocol ip address to all of the network elements, then uses the ip
addresses to direct traffic among network elements
what is the trend that desktop computers are moving toward in many homes?
Correct Ans - desktop computers are moving toward being used as a home
network server
what does a home network printer have that enables it to operate through a
network connection? Correct Ans - network interface card
a network attached storage NAs element should be connected to what element
in the home media network? Correct Ans - router
what entertainment multimedia elements are capable of receiving and
converting streamed over the top media into television format? Correct
Ans - streaming media players, many blu ray disc players, gaming
consoles, and smart tv
what could result if a customer's network has a data throughput of 6 megabits
per second and three different tvs streaming at 12 Mbs each Correct Ans -
all three HDTVs will experience glitches, annoying visual artifacts, or buffering
,which release of the institute of electrical and electronics engineers 802.11
specification was the first wireless accepted wireless standard to be branded
with the wifi name? Correct Ans - 802.11
which of the following is a method for controlling expectations? Correct
Ans - identify the source of emotional overload
which of the following best describes stereotyped thinking? Correct Ans -
presuming that all members of a group have certain characteristics
the attribute of being active as a critical thinker means? Correct Ans -
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? Correct Ans - -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 symptoms of poor attitude behavior? Correct Ans - 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
program is intermittent or constant. Which step are you using from the six
step troubleshooting process? Correct Ans - identifying the problem
. how can you use the five Ws technique for note taking when troubleshooting
a problem? Correct Ans - ask questions that begin with who, what,
when, where, and why? Write down the answers to help in your analysis of
the problem
you are at a customer's home and you believe you have solved the problem,
when do you check to be sure the resolution did not introduce any new
problems which step are you using from the six step process? Correct Ans
- verifying the solution
,to break the habit of a negative self-talk cycle Correct Ans - tell
yourself not now and move onto a positive thought whenever negative ones
occur
.by taking control of the expectations you have, you are Correct Ans -
more likely to improve your motivation and be a better problem solver
what internet protocol addresses modes can a docsis 3.0 and 3.1 modem be
provisioned in? Correct Ans - ipv4, ipv6, apm, and dpm
how does internet protocol multicast differ from broadcast? Correct Ans -
-multicast traffic is only sent to specific modem addresses on the network,
broadcast 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? Correct Ans - step
1-identify the problem
when analyzing a problem, what can the technician learn by asking the
customer to show or demonstrate the problem? Correct Ans -
symptoms of the problem can be viewed and any unusual screens or customer
entries can be identified
when using a digital analyzer to troubleshoot data throughput in the docsis
network, what is the minimum modulation error MER into the cable modem
for a 256 QAM carrier Correct Ans - 32Db or greater
which docsis layer is used by the cmts to differentiate between cable
modems? Correct Ans - the mac layer
how many upstream channels can be bonded in docsis 3.0? Correct Ans -
4 upstream
in the docsis network, why is the data throughput over the return path
typically less then the forward or downstream? Correct Ans -
narrower bandwidths and lower orders of modulation
. what would be the downstream throughput if 256 quam channels with a
throughput of 38 mbs were bonded? Correct Ans - 76 mbs
, what are two features that were added in the docsis 3.1 to extend the viability
of HFC into the next decade? Correct Ans - OFDM and LDPC
if a customer already has television service and is adding high speed data
service, what should be checked on the digital television channels?
Correct Ans - intermittent operation, which is a symptom of noise
interference in the downstream
To resolve where the source of a digital video problem lies, a technician uses...
Correct Ans - The divide-and-conquer method for troubleshooting, which
can begin with measurements on customer premise equipment that offer
easier access for testing
IPV4 addressing Correct Ans - Which of the following is a feature of
DOCSIS 2.0?
Installing a cable modem and router in a closet or utility room is simplified by
having what items in the room? Correct Ans - working computer,
platform for modem and router, twisted pair network cable with standard
configurations
Third generation (3G). Correct Ans - Which of the following
technologies allows Internet access for mobile phone users?
In addition to being accurate and detailed, a successful troubleshooter knows
that... Correct Ans - A critical step in troubleshooting is verifying the
signal levels and signal quality at the tap to establish the baseline performance
for the installation.
what version of the docsis specification included the option to increase the tap
frequency of the upstream to 85 Mhz? Correct Ans - Docsis 3.0
Enhanced TV Binary Exchange Format (EBIF). Correct Ans - New cable
services are implemented based on cost and need. What is a subset of tru2way
which will allow cable operators to give customers some of tru2way's function
without all of its cost?
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