NCTI -HSD FINAL-DOJ 2 EXAM NEWEST 2025 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
The first version of the Data Over Cable Service Interface Specification (DOCSIS) was approved
as an international standard by what organization? - (answers)The International
Telecommunication Union (ITU).
What criteria does the Data Over Cable Service Interface Specification (DOCSIS) certification
process ensure? - (answers)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)? - (answers)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? -
(answers)Time division multiple access (TDMA).
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
你是想要一篇“眼睛容易
rivaled the products of the traditional telephone companies? - (answers)Quality of service (QoS)
阅读的”中文文章
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? -
(answers)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 spectrum to 85 MHz in order to
, create enough bandwidth for upstream carriers from modems running on previous DOCSIS
versions? - (answers)DOCSIS 3.0.
Why are the data throughput rates for both downstream and upstream in Data Over Cable
Service Interface Specification (DOCSIS) networks asymmetrical? - (answers)Because the
narrower bandwidths and lower orders of modulation for the return path carriers cause the
DOCSIS downstream and upstream data rates to be unequal or asymmetrical.
Which Open Systems Interconnection (OSI) reference model layers does the MAC Layer in the
Data Over Cable Service Interface Specification (DOCSIS) overlap? - (answers)The Physical
and Data Link Layers.
From where do Data Over Cable Service Interface Specification (DOCSIS) modems receive their
configuration files, billing system messages, and access control messages? - (answers)From the
cable modem termination system (CMTS) acting as a "proxy" or messenger that transfers
messages and files between the modems and the respective servers.
What messages must a cable modem receive from the downstream signal in order to begin a
transmitting relationship with the cable modem termination system (CMTS)? - (answers)An
upstream channel descriptor (UCD) message, a symbol timing message (SYNC), and a
bandwidth allocation message (MAP).
What instructions might a cable modem termination system (CMTS) send in a RNG-RSP
message to modify the modem's transmission parameters? - (answers)An adjustment to the
modem's timing interval, transmit frequency, or power level
你是想要一篇“眼睛容易
阅读的”中文文章
Why would a cable operator consider activating device class identification (DCI) as part of a
DOCSIS modem's initialization? - (answers)To enable the cable operator to define special
modem classes or service levels that can be prioritized for ranging after a massive outage.
What does a DOCSIS 3.1 seek first when synchronizing with the cable modem termination
system (CMTS) in order to receive operational information? - (answers)An orthogonal frequency
division multiplexing (OFDM) channel that contains a set of contiguous subcarriers called the
PHY link channel (PLC).
COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
The first version of the Data Over Cable Service Interface Specification (DOCSIS) was approved
as an international standard by what organization? - (answers)The International
Telecommunication Union (ITU).
What criteria does the Data Over Cable Service Interface Specification (DOCSIS) certification
process ensure? - (answers)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)? - (answers)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? -
(answers)Time division multiple access (TDMA).
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
你是想要一篇“眼睛容易
rivaled the products of the traditional telephone companies? - (answers)Quality of service (QoS)
阅读的”中文文章
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? -
(answers)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 spectrum to 85 MHz in order to
, create enough bandwidth for upstream carriers from modems running on previous DOCSIS
versions? - (answers)DOCSIS 3.0.
Why are the data throughput rates for both downstream and upstream in Data Over Cable
Service Interface Specification (DOCSIS) networks asymmetrical? - (answers)Because the
narrower bandwidths and lower orders of modulation for the return path carriers cause the
DOCSIS downstream and upstream data rates to be unequal or asymmetrical.
Which Open Systems Interconnection (OSI) reference model layers does the MAC Layer in the
Data Over Cable Service Interface Specification (DOCSIS) overlap? - (answers)The Physical
and Data Link Layers.
From where do Data Over Cable Service Interface Specification (DOCSIS) modems receive their
configuration files, billing system messages, and access control messages? - (answers)From the
cable modem termination system (CMTS) acting as a "proxy" or messenger that transfers
messages and files between the modems and the respective servers.
What messages must a cable modem receive from the downstream signal in order to begin a
transmitting relationship with the cable modem termination system (CMTS)? - (answers)An
upstream channel descriptor (UCD) message, a symbol timing message (SYNC), and a
bandwidth allocation message (MAP).
What instructions might a cable modem termination system (CMTS) send in a RNG-RSP
message to modify the modem's transmission parameters? - (answers)An adjustment to the
modem's timing interval, transmit frequency, or power level
你是想要一篇“眼睛容易
阅读的”中文文章
Why would a cable operator consider activating device class identification (DCI) as part of a
DOCSIS modem's initialization? - (answers)To enable the cable operator to define special
modem classes or service levels that can be prioritized for ranging after a massive outage.
What does a DOCSIS 3.1 seek first when synchronizing with the cable modem termination
system (CMTS) in order to receive operational information? - (answers)An orthogonal frequency
division multiplexing (OFDM) channel that contains a set of contiguous subcarriers called the
PHY link channel (PLC).
