REP 1- REP 2 LATEST EXAMS SCRIPT QUESTIONS AND
ANSWERS SURE A+
✔✔Which data traffic protocol is used to monitor cable modems and cable modem
termination systems (CMTS), allowing cable operators to detect and correct problems in
the network? - ✔✔(SNMP) Simple network management protocol
✔✔To enable upstream transmissions, a cable modem must first send a ranging
request (RNG-REQ) to the cable modem termination system. The CMTS then sends a
ranging response (RNG-RSP) to adjust the modems: - ✔✔Timing, frequency, and
transmit power level
✔✔Each cable modem needs an IP address to serve as its indentity on the network.
What does a cable modem send to the cable modem termination system to request an
IP address? - ✔✔A dynamic host configuration protocol request (DHCP)
✔✔Initializing a cable modem is a seven step process. At which phase of the process
does a cable modem become authorized for high-speed data service? - ✔✔Registration
✔✔If the cable modems status indicator lights for the specific modem being installed
indicate the cable modem is continually ranging, what is the most likely cause? -
✔✔The modems upstream signal is not being received in the headend
✔✔Before installing a modem in a customer premises, you should: - ✔✔Discuss the
location of the modem and routing of cables with the customer to determine where the
customer wants the modem and cables located, if the home has a home area network
(HAN), and whether the computers that will use the modem are likely to be moved to
other locations within the home
✔✔The DOCSIS systems security component, Baseline Privacy Interface plus (BPI+),
protects customer data in the following ways: - ✔✔BPI+ encrypts packet data across the
cable network and provides secure distribution of synchronised keying data from the
cable modem termination system to the cable modems to enforce conditional access to
network services
✔✔Key maintenance practices used to ensure network reliability include: -
✔✔Balancing amplifier levels, sweeping of frequency responses, monitoring power
supplies, and conducting proof-of-performance testing
✔✔Lightning can be dangerous to humans and destructive to equipment. Grounding
and bonding procedures used to protect equipment from lightning damage include: -
✔✔Grounding and bonding procedures and practices as specified by the Nation
Electrical Code (NEC)
, ✔✔What is relatively recent cause of interference due to sharing frequencies with
broadband radio frequency signals between 700 and 900 MHz? - ✔✔Cellular
Communications
✔✔What is the Feder Communications Commissions (FCC) cumulative leakage index
(CLI)? - ✔✔The figure of merit that is a measure of compliance with the application of
FCC signal leakage rules
✔✔The FCC requires quarterly signal leakeage monitoring and reporting when? -
✔✔The cable operator utilizes cable frequencies that fall within the specified bands
identified in the Code of Federal Regulations, Title 47, Telecommunication, Part 76,
Cable Television Service
✔✔When using a signal level meter and half wave dipole antenna to check signal leake
at 3 meters, the SLM - ✔✔Must be capable of measuring signal levels as low as 20
uV/m or -40dBmV
✔✔In addition to using signal level meters to measure signal leakage, combination
meters incorporate both a signal level meter and leakage detector functionality. List
some qualities of an SLM with leakage detector functionality. - ✔✔They can measure
leaks as low as the minimum FCC required 20 uV/m at 3 meters across their entire
frequency range
✔✔The spectrum analyzer is a very versatile test instrument used to analyze many
types of communications signals. Some of its main functions are to: - ✔✔Monitor
transmissions and signal distortions over a wide spectrum and troubleshoot data carrier
levels
✔✔Digital multimeters DMM are used by cable personnel to help them perform various
technical duties. One important use is : - ✔✔Detection of a hot chassis condition at the
subscribers home
✔✔How are automated status system monitoring programs used for preventive
maintenance? - ✔✔Signals are constantly monitored and the information collected,
filtered, collated, prioritized, disseminated, and acted upon, thereby preventing
problems before they result in a service outage
✔✔What types of injuries are desk-bound office employees at risk of suffering while on
the job? - ✔✔Chronic back pain, eye strain, and musculoskeletal disorders (such as
carpal tunnel syndrome caused by repetitive motion).
✔✔What are three common categories of safety procedures that broadband cable
operators practive to safeguard the public? - ✔✔1: Protecting against lightning and
ANSWERS SURE A+
✔✔Which data traffic protocol is used to monitor cable modems and cable modem
termination systems (CMTS), allowing cable operators to detect and correct problems in
the network? - ✔✔(SNMP) Simple network management protocol
✔✔To enable upstream transmissions, a cable modem must first send a ranging
request (RNG-REQ) to the cable modem termination system. The CMTS then sends a
ranging response (RNG-RSP) to adjust the modems: - ✔✔Timing, frequency, and
transmit power level
✔✔Each cable modem needs an IP address to serve as its indentity on the network.
What does a cable modem send to the cable modem termination system to request an
IP address? - ✔✔A dynamic host configuration protocol request (DHCP)
✔✔Initializing a cable modem is a seven step process. At which phase of the process
does a cable modem become authorized for high-speed data service? - ✔✔Registration
✔✔If the cable modems status indicator lights for the specific modem being installed
indicate the cable modem is continually ranging, what is the most likely cause? -
✔✔The modems upstream signal is not being received in the headend
✔✔Before installing a modem in a customer premises, you should: - ✔✔Discuss the
location of the modem and routing of cables with the customer to determine where the
customer wants the modem and cables located, if the home has a home area network
(HAN), and whether the computers that will use the modem are likely to be moved to
other locations within the home
✔✔The DOCSIS systems security component, Baseline Privacy Interface plus (BPI+),
protects customer data in the following ways: - ✔✔BPI+ encrypts packet data across the
cable network and provides secure distribution of synchronised keying data from the
cable modem termination system to the cable modems to enforce conditional access to
network services
✔✔Key maintenance practices used to ensure network reliability include: -
✔✔Balancing amplifier levels, sweeping of frequency responses, monitoring power
supplies, and conducting proof-of-performance testing
✔✔Lightning can be dangerous to humans and destructive to equipment. Grounding
and bonding procedures used to protect equipment from lightning damage include: -
✔✔Grounding and bonding procedures and practices as specified by the Nation
Electrical Code (NEC)
, ✔✔What is relatively recent cause of interference due to sharing frequencies with
broadband radio frequency signals between 700 and 900 MHz? - ✔✔Cellular
Communications
✔✔What is the Feder Communications Commissions (FCC) cumulative leakage index
(CLI)? - ✔✔The figure of merit that is a measure of compliance with the application of
FCC signal leakage rules
✔✔The FCC requires quarterly signal leakeage monitoring and reporting when? -
✔✔The cable operator utilizes cable frequencies that fall within the specified bands
identified in the Code of Federal Regulations, Title 47, Telecommunication, Part 76,
Cable Television Service
✔✔When using a signal level meter and half wave dipole antenna to check signal leake
at 3 meters, the SLM - ✔✔Must be capable of measuring signal levels as low as 20
uV/m or -40dBmV
✔✔In addition to using signal level meters to measure signal leakage, combination
meters incorporate both a signal level meter and leakage detector functionality. List
some qualities of an SLM with leakage detector functionality. - ✔✔They can measure
leaks as low as the minimum FCC required 20 uV/m at 3 meters across their entire
frequency range
✔✔The spectrum analyzer is a very versatile test instrument used to analyze many
types of communications signals. Some of its main functions are to: - ✔✔Monitor
transmissions and signal distortions over a wide spectrum and troubleshoot data carrier
levels
✔✔Digital multimeters DMM are used by cable personnel to help them perform various
technical duties. One important use is : - ✔✔Detection of a hot chassis condition at the
subscribers home
✔✔How are automated status system monitoring programs used for preventive
maintenance? - ✔✔Signals are constantly monitored and the information collected,
filtered, collated, prioritized, disseminated, and acted upon, thereby preventing
problems before they result in a service outage
✔✔What types of injuries are desk-bound office employees at risk of suffering while on
the job? - ✔✔Chronic back pain, eye strain, and musculoskeletal disorders (such as
carpal tunnel syndrome caused by repetitive motion).
✔✔What are three common categories of safety procedures that broadband cable
operators practive to safeguard the public? - ✔✔1: Protecting against lightning and
