NCTI BDI Question and answers already
passed
What functionality is integrated in all modern signal level meters (SLM) to
measure specific parameters of a digital modulation carrier containing digital
television (DTV) and Data Over Cable Service Interface Specification
(DOCSIS) signals? - correct answers Digital signal analyzer functionality
What is a risk of performing automated measurements on a sample of
channels instead of all channels? - correct answers Problems in unmeasured
channels may go undetected.
Using a digital signal analyzer, what measurements are typically taken to
troubleshoot and diagnose a digital television (DTV) signal? - correct answers
Average power level, modulation error ratio (MER), and bit error ratio (BER).
How do cable operators ensure that only paying customers are receiving
digital television (DTV) service? - correct answers Cable operators prevent
unauthorized reception of DTV services by scrambling or encrypting the
services.
Why were digital terminal adapters (DTA) originally installed in the customer
premises? - correct answers Because the customer wanted service to their
analog TV and subscribed to basic-only service.
What determines the amount of content that can be stored on a digital video
recorder (DVR)? - correct answers The hard drive capacity and the format of
the stored content.
A cable gateway can replace which broadband cable operator supplied
devices? - correct answers A cable modem and a wireless telephone base
, What forced customers to choose between the integrated entertainment
system furniture cabinet and upgraded system components? - correct
answers Advances in technology such as color TV, upgraded turntables, etc.
What functionality do many Blu-ray players have, besides playing back discs?
- correct answers Many have built in media streaming capabilities through a
wired or wireless connection.
Entertainment cabinets with doors made of green glass block which of the
following from electronic components? - correct answers Infrared (IR) Remote
sensors
The first version of DOCSIS was approved as an international standard by
what organization? - correct answers The International Telecommunication
Union (ITU)
What layers of the OSI model are applied between DOCSIS modems and the
CMTS? - correct answers Layers 1 through 4 - Physical, Data Link, Network,
and Transport
What criteria does the DOCSIS certification process ensure? - correct
answers Compliance with the DOCSIS standard and interoperability between
suppliers.
What access technology does the first version of the DOCSIS use to send
data upstream over the network's RF return path? - correct answers Time
division multiple access (TDMA)
What was added to the first DOCSIS that enabled broadband cable operators
to provide telephone service with quality and reliability that rivaled the
passed
What functionality is integrated in all modern signal level meters (SLM) to
measure specific parameters of a digital modulation carrier containing digital
television (DTV) and Data Over Cable Service Interface Specification
(DOCSIS) signals? - correct answers Digital signal analyzer functionality
What is a risk of performing automated measurements on a sample of
channels instead of all channels? - correct answers Problems in unmeasured
channels may go undetected.
Using a digital signal analyzer, what measurements are typically taken to
troubleshoot and diagnose a digital television (DTV) signal? - correct answers
Average power level, modulation error ratio (MER), and bit error ratio (BER).
How do cable operators ensure that only paying customers are receiving
digital television (DTV) service? - correct answers Cable operators prevent
unauthorized reception of DTV services by scrambling or encrypting the
services.
Why were digital terminal adapters (DTA) originally installed in the customer
premises? - correct answers Because the customer wanted service to their
analog TV and subscribed to basic-only service.
What determines the amount of content that can be stored on a digital video
recorder (DVR)? - correct answers The hard drive capacity and the format of
the stored content.
A cable gateway can replace which broadband cable operator supplied
devices? - correct answers A cable modem and a wireless telephone base
, What forced customers to choose between the integrated entertainment
system furniture cabinet and upgraded system components? - correct
answers Advances in technology such as color TV, upgraded turntables, etc.
What functionality do many Blu-ray players have, besides playing back discs?
- correct answers Many have built in media streaming capabilities through a
wired or wireless connection.
Entertainment cabinets with doors made of green glass block which of the
following from electronic components? - correct answers Infrared (IR) Remote
sensors
The first version of DOCSIS was approved as an international standard by
what organization? - correct answers The International Telecommunication
Union (ITU)
What layers of the OSI model are applied between DOCSIS modems and the
CMTS? - correct answers Layers 1 through 4 - Physical, Data Link, Network,
and Transport
What criteria does the DOCSIS certification process ensure? - correct
answers Compliance with the DOCSIS standard and interoperability between
suppliers.
What access technology does the first version of the DOCSIS use to send
data upstream over the network's RF return path? - correct answers Time
division multiple access (TDMA)
What was added to the first DOCSIS that enabled broadband cable operators
to provide telephone service with quality and reliability that rivaled the
