NCTI - Cable Network Overview
Conventional Final Exam Questions And
Answers
List the six methods by which signals arrive at the cable system
headend. -
correct answer ✅Direct feed, coaxial cable, fiber-optic cable, over-
the-air, PSTN, and CMTS.
What group established the data-over-cable-service-interface-
specification (DOCSIS)? -
correct answer ✅CableLabs.
What provides the cable network's interface to the Internet? -
correct answer ✅The cable modem termination system (CMTS).
In terms of bandwidth, how wide is a video signal in a U.S. cable
system? -
correct answer ✅6 MHz.
The process of combining digital services in the headend is called: -
correct answer ✅Multiplexing.
, NCTI - Cable Network Overview
Conventional Final Exam Questions And
Answers
Many of the potential drawbacks from early coaxial tree-and-
branch distribution can be overcome by -
correct answer ✅Utilizing an HFC or PON architecture.
What is the function of an optical node? -
correct answer ✅It converts light energy to RF.
How often does the Federal Communications Commission (FCC)
require cable operators to perform proof-of-performance (POP)
measurements on the signals in the headend and at specified test
locations throughout the network? -
correct answer ✅Bi-annually.
Which of the following best describes basic service provided by the
cable company? -
correct answer ✅Local origination channels.
When delivering high-speed Internet service, the cable modem
tunes to the downstream carrier and communicates with which of
the following? -
correct answer ✅The cable modem termination system (CMTS).
Conventional Final Exam Questions And
Answers
List the six methods by which signals arrive at the cable system
headend. -
correct answer ✅Direct feed, coaxial cable, fiber-optic cable, over-
the-air, PSTN, and CMTS.
What group established the data-over-cable-service-interface-
specification (DOCSIS)? -
correct answer ✅CableLabs.
What provides the cable network's interface to the Internet? -
correct answer ✅The cable modem termination system (CMTS).
In terms of bandwidth, how wide is a video signal in a U.S. cable
system? -
correct answer ✅6 MHz.
The process of combining digital services in the headend is called: -
correct answer ✅Multiplexing.
, NCTI - Cable Network Overview
Conventional Final Exam Questions And
Answers
Many of the potential drawbacks from early coaxial tree-and-
branch distribution can be overcome by -
correct answer ✅Utilizing an HFC or PON architecture.
What is the function of an optical node? -
correct answer ✅It converts light energy to RF.
How often does the Federal Communications Commission (FCC)
require cable operators to perform proof-of-performance (POP)
measurements on the signals in the headend and at specified test
locations throughout the network? -
correct answer ✅Bi-annually.
Which of the following best describes basic service provided by the
cable company? -
correct answer ✅Local origination channels.
When delivering high-speed Internet service, the cable modem
tunes to the downstream carrier and communicates with which of
the following? -
correct answer ✅The cable modem termination system (CMTS).
