NCTI - Installer Book
Which of the following is one of the proper steps when descending the pole? - ANS C) Lower
the leg into position with body weight behind it.
Which of the following will strengthen signals as they move farther away from the headend
through the trunk express system? - ANS B) Distribution amplifiers.
Which of the following describes a carrier wave? - ANS B) A wave with a much higher
frequency than the input signal.
Which of the following describes modulation? - ANS B) The reshaping of a carrier wave to
include information contained by an input signal.
Which of the following is the symbol for power? - ANS W = watts
Which of the following describes the process of measuring an analog signal at a specific
interval? - ANS Sampling
Which of the following is true about the base 10 system? - ANS B) Digits 0 through 9 are used.
Which of the following best describes post bit-error-rate (BER)? - ANS A) A measurement of all
bit error after forward error correction has been applied.
Which of the following compression rates will enable six digital programs to be transmitted
rather than one analog channel in a 6 MHz bandwidth? - ANS 6:1
At what modulation error ratio (MER) should a 256-quadrature amplitude modulation (QAM)
signal operate? - ANS 32db or greater
On the return path, signals from many sources must be sent on the same cable. What is the
name of the technique that allows the signals to be sent without losing data integrity? - ANS B)
Time division multiple access (TDMA).
In a coaxial cable, what is the purpose of the shielding? - ANS C) Prevents ingress and egress.
Which of the following describes attenuation? - ANS A reduction in signal strength through a
cable system.
Which of the following is a feature of multimode fiber? - ANS B) It is easier to handle and
terminate than single-mode fiber.
, Which of the following describes the structure of fiber-optic cable? - ANS Self-supporting aerial
fiber cable requires grounding or bonding if it contains metal.
Which of the following is true about CAT-1 cabling? - ANS C) It is typically used in voice
applications.
Which of the following twisted-pair cable types is the only one that is approved by certifying
bodies for data rates in excess of 10 Mbps? - ANS A) CAT-5e
Which of the following is responsible for reducing crosstalk in twisted-pair cable? - ANS A)
Number of twists.
Wireless networks use low-power RF signals; therefore, which of the following is true about
signal strength? - ANS A) The greater the distance between wireless devices, the lower the
signal strength and data rate.
Which of the following is true about Wi-Fi technology? - ANS D) The connection between the
router and modem is always wired.
What percentage does a cable's attenuation increase or decrease for every 10° change in
temperature? - ANS 1%
Which of the following is a characteristic of high-definition television (HDTV)? - ANS D) Audio
surround sound using Dolby Digital technology.
Which type of screen display has been known to use a great deal of energy, can have a short
lifespan, but has high-contrast, vibrantly accurate color images? - ANS plasma
Which TV digital format was originally designed for progressive scan DVDs? - ANS EDTV
Which type of television display has a deeper cabinet, which affects the size of the screen? -
ANS rear projector
Which device enables customers to schedule recordings of television programs? - ANS B)
Digital video recorder (DVR). dvr
The cable modem termination system (CMTS) is one of the two main components of DOCSIS
architecture. What is the other? - ANS B) Cable modem.
Which of the following is the CableLabs-led project built to define the architecture for the
delivery of real-time Internet protocol (IP) applications? - ANS C) PacketCable.
Which of the following is one of the proper steps when descending the pole? - ANS C) Lower
the leg into position with body weight behind it.
Which of the following will strengthen signals as they move farther away from the headend
through the trunk express system? - ANS B) Distribution amplifiers.
Which of the following describes a carrier wave? - ANS B) A wave with a much higher
frequency than the input signal.
Which of the following describes modulation? - ANS B) The reshaping of a carrier wave to
include information contained by an input signal.
Which of the following is the symbol for power? - ANS W = watts
Which of the following describes the process of measuring an analog signal at a specific
interval? - ANS Sampling
Which of the following is true about the base 10 system? - ANS B) Digits 0 through 9 are used.
Which of the following best describes post bit-error-rate (BER)? - ANS A) A measurement of all
bit error after forward error correction has been applied.
Which of the following compression rates will enable six digital programs to be transmitted
rather than one analog channel in a 6 MHz bandwidth? - ANS 6:1
At what modulation error ratio (MER) should a 256-quadrature amplitude modulation (QAM)
signal operate? - ANS 32db or greater
On the return path, signals from many sources must be sent on the same cable. What is the
name of the technique that allows the signals to be sent without losing data integrity? - ANS B)
Time division multiple access (TDMA).
In a coaxial cable, what is the purpose of the shielding? - ANS C) Prevents ingress and egress.
Which of the following describes attenuation? - ANS A reduction in signal strength through a
cable system.
Which of the following is a feature of multimode fiber? - ANS B) It is easier to handle and
terminate than single-mode fiber.
, Which of the following describes the structure of fiber-optic cable? - ANS Self-supporting aerial
fiber cable requires grounding or bonding if it contains metal.
Which of the following is true about CAT-1 cabling? - ANS C) It is typically used in voice
applications.
Which of the following twisted-pair cable types is the only one that is approved by certifying
bodies for data rates in excess of 10 Mbps? - ANS A) CAT-5e
Which of the following is responsible for reducing crosstalk in twisted-pair cable? - ANS A)
Number of twists.
Wireless networks use low-power RF signals; therefore, which of the following is true about
signal strength? - ANS A) The greater the distance between wireless devices, the lower the
signal strength and data rate.
Which of the following is true about Wi-Fi technology? - ANS D) The connection between the
router and modem is always wired.
What percentage does a cable's attenuation increase or decrease for every 10° change in
temperature? - ANS 1%
Which of the following is a characteristic of high-definition television (HDTV)? - ANS D) Audio
surround sound using Dolby Digital technology.
Which type of screen display has been known to use a great deal of energy, can have a short
lifespan, but has high-contrast, vibrantly accurate color images? - ANS plasma
Which TV digital format was originally designed for progressive scan DVDs? - ANS EDTV
Which type of television display has a deeper cabinet, which affects the size of the screen? -
ANS rear projector
Which device enables customers to schedule recordings of television programs? - ANS B)
Digital video recorder (DVR). dvr
The cable modem termination system (CMTS) is one of the two main components of DOCSIS
architecture. What is the other? - ANS B) Cable modem.
Which of the following is the CableLabs-led project built to define the architecture for the
delivery of real-time Internet protocol (IP) applications? - ANS C) PacketCable.
