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NCTI -HSD FINAL-DOJ 2 EXAM NEWEST 2025
ACTUAL EXAM COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
What Internet protocol (IP) address modes can a Data Over
Cable Service Interface Specification (DOCSIS) 3.0 and 3.1
modem be provisioned in? - ANSWER-IP version 4 (IPv4), IP
version 6 (IPv6), alternate provisioning mode (APM), and dual-
stack provisioning mode (DPM).
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
When analyzing a problem, what can the technician learn by
asking the customer to show or demonstrate the problem? -
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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 Data Over Cable Service Interface
Specification (DOCSIS) network, what is the minimum
modulation error ratio (MER) into the cable modem for a 256-
QAM carrier? - ANSWER-32 dB or greater.
If a customer already has television service and is adding high
speed data service, what should be checked on the digital
television channels? - 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? - ANSWER-easy
access so that coaxial cable can be routed to the modem, an
electrical outlet to power the cable modem and router, and
twisted-pair network cable that is tagged and has connectors
installed using standard wiring configurations
what version of the docsis specification included the option to
increase the tap frequency of the upstream to 85 Mhz? -
ANSWER-Docsis 3.0
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What device can be installed with a cable modem to enable
internet access to two or more devices in the customer premises?
- ANSWER-a router with built-in multi-jack Ethernet switch
Why is it good practice to review the service work order with
the customer before beginning a high speed data service
installation? - 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? - ANSWER-by streaming and downloading high-content
data, such as movies and TV shows in high-definition
throughout the billing period.
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? - ANSWER-Direct the
customer to the cable operators web page to show them what
information is available and to help them setup their email
NCTI -HSD FINAL-DOJ 2 EXAM NEWEST 2025
ACTUAL EXAM COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
What Internet protocol (IP) address modes can a Data Over
Cable Service Interface Specification (DOCSIS) 3.0 and 3.1
modem be provisioned in? - ANSWER-IP version 4 (IPv4), IP
version 6 (IPv6), alternate provisioning mode (APM), and dual-
stack provisioning mode (DPM).
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
When analyzing a problem, what can the technician learn by
asking the customer to show or demonstrate the problem? -
,2|Page
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 Data Over Cable Service Interface
Specification (DOCSIS) network, what is the minimum
modulation error ratio (MER) into the cable modem for a 256-
QAM carrier? - ANSWER-32 dB or greater.
If a customer already has television service and is adding high
speed data service, what should be checked on the digital
television channels? - 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? - ANSWER-easy
access so that coaxial cable can be routed to the modem, an
electrical outlet to power the cable modem and router, and
twisted-pair network cable that is tagged and has connectors
installed using standard wiring configurations
what version of the docsis specification included the option to
increase the tap frequency of the upstream to 85 Mhz? -
ANSWER-Docsis 3.0
, 3|Page
What device can be installed with a cable modem to enable
internet access to two or more devices in the customer premises?
- ANSWER-a router with built-in multi-jack Ethernet switch
Why is it good practice to review the service work order with
the customer before beginning a high speed data service
installation? - 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? - ANSWER-by streaming and downloading high-content
data, such as movies and TV shows in high-definition
throughout the billing period.
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? - ANSWER-Direct the
customer to the cable operators web page to show them what
information is available and to help them setup their email
