PROGRESSION CONSTRUCTION COORDINATOR I – II
NEWEST 2024 ACTUAL EXAM COMPLETE 110
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
Monitoring the status of optical nodes - ANSWER: Involves the use of a node
transponder that continuously monitors a number of critical functions.
Digital return path transmissions - ANSWER: Use DWDM
Dense wavelength division multiplexing
digital return transmitters in hub-to-headend architectures.
Broadband cable operators provide customers with HSD High-speed data
connections to the Internet via their HFC networks using what standard? - ANSWER:
DOCSIS
What is MPEG? - ANSWER: A universally accepted standard for digital television, first
released in 1992.
Which of the following is true about optical nodes? - ANSWER: They contain four
main sections: the optical receiver, the RF amplifier module, the reverse optical
transmitter, and the DC power supply.
What product based on the DOCSIS defines the protocols for IP telephony over HFC?
- ANSWER: PacketCable
In a centralized server VOD architecture, - ANSWER: The number of servers needed
for video content storage is smaller than in the distributed server architecture.
Which of the following statements about local ad insertion is true? - ANSWER: Local
ad insertion is performed usually by a video server.
In regard to providing HSD service, - ANSWER: The CMTS
Cable modem termination system
can provide a data transfer rate up to 38 Mbps, using 256-QAM in a single 6 MHz
channel.
Which of the following is true about the SONET standard? - ANSWER: SONET is the
North American standard used for telephony applications.
Compared to a solid copper center conductor, which property about a copper clad
aluminum (CCA) center conductor is correct? - ANSWER: The CCA center conductor
has almost equal attenuation at high frequencies.
, In hardline coaxial cable, what is the most common dielectric material? - ANSWER:
Foamed polyethylene produced by gas injection.
In aerial installations, why do cable manufacturers recommend that expansion loops
be formed in hardline coaxial cable? - ANSWER: To allow movement of the cable
when lashed to the strand
Why was the impedance for the broadband cable industry standardized at 75 ohms
(Ω)? - ANSWER: At 75 Ω characteristic impedance, the coaxial cable has minimal
attenuation, with adequate breakdown voltage and power carrying capacity.
What is the coaxial cable velocity of propagation (VoP)? - ANSWER: The rate that
radio frequency (RF) signals travel through the coaxial cable versus the speed that RF
signals travel in a vacuum or free space.
If the attenuation through a 100 ft. span of 0.750 MC2 coaxial cable is 2.5dB at 75
MHz, what will be the approximate attenuation at 300 MHz? - ANSWER: 2 x 2.5 dB,
or 5.0 dB.
What is the attenuation through 1,600-feet of 0.750 cable at 600 MHz and 120° F,
when at 68° F and 600 MHz the cable attenuation rate is 1.31 decibels (dB)/100 feet?
(Be sure to factor in the higher temperature.) - ANSWER: 22.05 dB.
What happens when there is an impedance mismatch between the coaxial cable and
the load? - ANSWER: Some signal energy is transferred to the load, with the
remainder reflected along the coaxial cable back to the source.
What is the return loss in coaxial cable? - ANSWER: The difference in decibels (dB)
between the signal power applied to a terminated cable and the reflected signal
power.
How can signal leaks (egress) from hardline coaxial cable occur? - ANSWER: Through
cracks in the shield where the cable is bent, or tiny holes in the shield.
Why are pin-type hardline connectors the preferred type of connector for attaching
hardline coaxial cable to equipment housings in today's networks? - ANSWER: Over
the years, intermittent operation, low-frequency roll-off, and common path
distortion (CPD) issues have been attributed to feed-through connectors.
What type of adapter is used for permanent or temporary jumper installation in
place of damaged hardline coaxial cable or equipment hookup? - ANSWER: Pin-to-F
female adapters.
What should be worn when cutting and preparing hardline coaxial cable for
connector attachment? - ANSWER: Leather work gloves.
NEWEST 2024 ACTUAL EXAM COMPLETE 110
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
Monitoring the status of optical nodes - ANSWER: Involves the use of a node
transponder that continuously monitors a number of critical functions.
Digital return path transmissions - ANSWER: Use DWDM
Dense wavelength division multiplexing
digital return transmitters in hub-to-headend architectures.
Broadband cable operators provide customers with HSD High-speed data
connections to the Internet via their HFC networks using what standard? - ANSWER:
DOCSIS
What is MPEG? - ANSWER: A universally accepted standard for digital television, first
released in 1992.
Which of the following is true about optical nodes? - ANSWER: They contain four
main sections: the optical receiver, the RF amplifier module, the reverse optical
transmitter, and the DC power supply.
What product based on the DOCSIS defines the protocols for IP telephony over HFC?
- ANSWER: PacketCable
In a centralized server VOD architecture, - ANSWER: The number of servers needed
for video content storage is smaller than in the distributed server architecture.
Which of the following statements about local ad insertion is true? - ANSWER: Local
ad insertion is performed usually by a video server.
In regard to providing HSD service, - ANSWER: The CMTS
Cable modem termination system
can provide a data transfer rate up to 38 Mbps, using 256-QAM in a single 6 MHz
channel.
Which of the following is true about the SONET standard? - ANSWER: SONET is the
North American standard used for telephony applications.
Compared to a solid copper center conductor, which property about a copper clad
aluminum (CCA) center conductor is correct? - ANSWER: The CCA center conductor
has almost equal attenuation at high frequencies.
, In hardline coaxial cable, what is the most common dielectric material? - ANSWER:
Foamed polyethylene produced by gas injection.
In aerial installations, why do cable manufacturers recommend that expansion loops
be formed in hardline coaxial cable? - ANSWER: To allow movement of the cable
when lashed to the strand
Why was the impedance for the broadband cable industry standardized at 75 ohms
(Ω)? - ANSWER: At 75 Ω characteristic impedance, the coaxial cable has minimal
attenuation, with adequate breakdown voltage and power carrying capacity.
What is the coaxial cable velocity of propagation (VoP)? - ANSWER: The rate that
radio frequency (RF) signals travel through the coaxial cable versus the speed that RF
signals travel in a vacuum or free space.
If the attenuation through a 100 ft. span of 0.750 MC2 coaxial cable is 2.5dB at 75
MHz, what will be the approximate attenuation at 300 MHz? - ANSWER: 2 x 2.5 dB,
or 5.0 dB.
What is the attenuation through 1,600-feet of 0.750 cable at 600 MHz and 120° F,
when at 68° F and 600 MHz the cable attenuation rate is 1.31 decibels (dB)/100 feet?
(Be sure to factor in the higher temperature.) - ANSWER: 22.05 dB.
What happens when there is an impedance mismatch between the coaxial cable and
the load? - ANSWER: Some signal energy is transferred to the load, with the
remainder reflected along the coaxial cable back to the source.
What is the return loss in coaxial cable? - ANSWER: The difference in decibels (dB)
between the signal power applied to a terminated cable and the reflected signal
power.
How can signal leaks (egress) from hardline coaxial cable occur? - ANSWER: Through
cracks in the shield where the cable is bent, or tiny holes in the shield.
Why are pin-type hardline connectors the preferred type of connector for attaching
hardline coaxial cable to equipment housings in today's networks? - ANSWER: Over
the years, intermittent operation, low-frequency roll-off, and common path
distortion (CPD) issues have been attributed to feed-through connectors.
What type of adapter is used for permanent or temporary jumper installation in
place of damaged hardline coaxial cable or equipment hookup? - ANSWER: Pin-to-F
female adapters.
What should be worn when cutting and preparing hardline coaxial cable for
connector attachment? - ANSWER: Leather work gloves.
