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NCTI -HSD FINAL-DOJ 2 EXAM NEWEST
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? -
CORRECT 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? -
CORRECT 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.
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Which step in the troubleshooting process requires a discussion with the
customer to gather more detail about the problem? - CORRECT
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? - CORRECT ANSWER✔✔
The symptoms of the problem can be viewed and any unusual screens or
customer entries can be identified.
The first version of the Data Over Cable Service Interface Specification
(DOCSIS) was approved as an international standard by what organization?
- CORRECT ANSWER✔✔ The International Telecommunication Union (ITU).
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What criteria does the Data Over Cable Service Interface Specification
(DOCSIS) certification process ensure? - CORRECT ANSWER✔✔ Compliance
with the DOCSIS standard and interoperability between suppliers.
What layers of the Open Systems Interconnection (OSI) reference model
are applied between Data Over Cable Service Interface Specification
(DOCSIS) modems and the cable modem termination system (CMTS)? -
CORRECT
ANSWER✔✔ Layers 1 through 4 (Physical layer, Data Link Layer, Network
Layer, and Transport Layer) are applied between the DOCSIS modem and
CMTS.
What access technology does the first version of the Data Over Cable
Service Interface Specification (DOCSIS 1.0) use to send data upstream over
the network's RF return path? - CORRECT ANSWER✔✔ Time division multiple
access (TDMA).
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What was added to the first Data Over Cable Service Interface Specification
(DOCSIS) that enabled broadband cable operators to provide telephone
service with quality and reliability that rivaled the products of the
traditional telephone companies? - CORRECT ANSWER✔✔ Quality of
service (QoS) controls, enhanced security, and adaptive equalization in the
upstream path.
What features were introduced with the 3.1 version of the Data Over Cable
Service Interface Specification (DOCSIS 3.1) to increase the downstream
and upstream data throughput? - CORRECT ANSWER✔✔ Orthogonal
frequency division multiplexing (OFDM) and low-density parity-check
(LDPC).
Which Data Over Cable Service Interface Specification (DOCSIS) version was
the first to provide an option for raising the top frequency of the upstream
NCTI -HSD FINAL-DOJ 2 EXAM NEWEST
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? -
CORRECT 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? -
CORRECT 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.
,2 | Page
Which step in the troubleshooting process requires a discussion with the
customer to gather more detail about the problem? - CORRECT
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? - CORRECT ANSWER✔✔
The symptoms of the problem can be viewed and any unusual screens or
customer entries can be identified.
The first version of the Data Over Cable Service Interface Specification
(DOCSIS) was approved as an international standard by what organization?
- CORRECT ANSWER✔✔ The International Telecommunication Union (ITU).
,3 | Page
What criteria does the Data Over Cable Service Interface Specification
(DOCSIS) certification process ensure? - CORRECT ANSWER✔✔ Compliance
with the DOCSIS standard and interoperability between suppliers.
What layers of the Open Systems Interconnection (OSI) reference model
are applied between Data Over Cable Service Interface Specification
(DOCSIS) modems and the cable modem termination system (CMTS)? -
CORRECT
ANSWER✔✔ Layers 1 through 4 (Physical layer, Data Link Layer, Network
Layer, and Transport Layer) are applied between the DOCSIS modem and
CMTS.
What access technology does the first version of the Data Over Cable
Service Interface Specification (DOCSIS 1.0) use to send data upstream over
the network's RF return path? - CORRECT ANSWER✔✔ Time division multiple
access (TDMA).
, 4 | Page
What was added to the first Data Over Cable Service Interface Specification
(DOCSIS) that enabled broadband cable operators to provide telephone
service with quality and reliability that rivaled the products of the
traditional telephone companies? - CORRECT ANSWER✔✔ Quality of
service (QoS) controls, enhanced security, and adaptive equalization in the
upstream path.
What features were introduced with the 3.1 version of the Data Over Cable
Service Interface Specification (DOCSIS 3.1) to increase the downstream
and upstream data throughput? - CORRECT ANSWER✔✔ Orthogonal
frequency division multiplexing (OFDM) and low-density parity-check
(LDPC).
Which Data Over Cable Service Interface Specification (DOCSIS) version was
the first to provide an option for raising the top frequency of the upstream
