CABLE NETWORK OVERVIEW CONVENTIONAL
QUESTIONS AND ANSWERS ELABORATIONS!!
List the six methods by which signals arrive at the cable system headend.
answers: Direct feed, satellite, over-the-air, terrestrial microwave, local
origination, and PSTN.
What group established the data-over-cable-service-interface-specification
(DOCSIS)?
answers: Cable Labs
What provides the cable network's interface to the Internet?
answers: The cable modem termination system (CMTS).
In terms of bandwidth, how wide is a video signal in a U.S. cable system?
answers: 6 MHz
The process of combining digital services in the headend is called:
answers: Multiplexing
Many of the potential drawbacks from early coaxial tree-and-branch distribution
can be overcome by
answers: Utilizing an HFC or PON architecture.
What is the function of an optical node?
, answers: 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?
answers: Bi-Annually
Which of the following best describes basic service provided by the cable
company?
answers: Local origination channels.
When delivering high-speed Internet service, the cable modem tunes to the
downstream carrier and communicates with which of the following?
answers: The cable modem termination system (CMTS).
Before fiber or coax is placed in an aerial plant, steel-support strand is strung,
suspended, and attached to a clamp. Where should this strand be placed in relation
to telephone cables and utility power lines?
answers: At least 40 in. below power lines and 12 in. above telephone cables.
Which type of power supply experiences a slight time delay before switching over
to batteries during a utility power outage?
answers: Stand by
How do amplifiers maintain equal signal levels?
QUESTIONS AND ANSWERS ELABORATIONS!!
List the six methods by which signals arrive at the cable system headend.
answers: Direct feed, satellite, over-the-air, terrestrial microwave, local
origination, and PSTN.
What group established the data-over-cable-service-interface-specification
(DOCSIS)?
answers: Cable Labs
What provides the cable network's interface to the Internet?
answers: The cable modem termination system (CMTS).
In terms of bandwidth, how wide is a video signal in a U.S. cable system?
answers: 6 MHz
The process of combining digital services in the headend is called:
answers: Multiplexing
Many of the potential drawbacks from early coaxial tree-and-branch distribution
can be overcome by
answers: Utilizing an HFC or PON architecture.
What is the function of an optical node?
, answers: 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?
answers: Bi-Annually
Which of the following best describes basic service provided by the cable
company?
answers: Local origination channels.
When delivering high-speed Internet service, the cable modem tunes to the
downstream carrier and communicates with which of the following?
answers: The cable modem termination system (CMTS).
Before fiber or coax is placed in an aerial plant, steel-support strand is strung,
suspended, and attached to a clamp. Where should this strand be placed in relation
to telephone cables and utility power lines?
answers: At least 40 in. below power lines and 12 in. above telephone cables.
Which type of power supply experiences a slight time delay before switching over
to batteries during a utility power outage?
answers: Stand by
How do amplifiers maintain equal signal levels?
