ROC II, Course I: Study Guide
(Combined) Question and answers
already passed
Which DOCSIS version was released to support Packet Cable, an IP-based
platform for telephone service over a DOCSIS access network? - correct
answers DOCSIS 1.1
Which DOCSIS version was the first to enable multiple downstream and
upstream channels to be used to transport data to and from a single modem?
- correct answers DOCSIS 3.0
Which DOCSIS version was released to improve the data throughput of the
upstream by doubling the maximum bandwidth of the upstream carrier
channel from 3.2 MHz to 6.4 MHz? - correct answers DOCSIS 2.0
Which DOCSIS version was the first to utilize orthogonal frequency division
multiplexing (OFDM)? - correct answers DOCSIS 3.1
What was the first generation of cellular technology capable of Internet access
known as? - correct answers 3G
What is the framework that calls for peak data rates that approach 100Mbps
when the user is mobile, and 1 gigabit per second (Gbps) when stationary)
called? - correct answers 4G
What network standard operates at a millimeter frequency band around 30
GHz being considered? - correct answers 5G
,True or False. A high-pass filter (HPF) is installed in a Multimedia over Coax
Alliance (MoCA) home network for isolation from a broadband cable network.
- correct answers False
True or False. A point-of-entry (POE) filter prevents snooping into the
customer's MoCA network providing some network security. - correct answers
True
True or False. Voice activated personal assistants are always listening for
commands, but are programmed to respond only when hearing a wake word,
such as the personal assistant's name. - correct answers True
True or False. Interactive electronic program guides (EPG) were introduced
with DTV to enable customers to use voice commands. - correct answers
False
What transformed two-way cable TV networks into a broadband cable
networks? - correct answers DOCSIS defined methods for building and
equipping a two-way cable TV network
What protocol prioritizes speed of packet delivery (over accuracy) and is used
for real-time applications such as VoIP, streaming video, and interactive
gaming? - correct answers User datagram protocol (UDP)
What was created to distinguish voice packets from other packet types? -
correct answers Multiprotocol label switching (MPLS)
Which protocol offers an alternative telephone service delivered over the
Internet? - correct answers Voice over Internet protocol (VoIP)
,What protocol created delays from sequencing, error correction,
acknowledgements, etc, which are unacceptable for a quality telephone call? -
correct answers Transmission control protocol (TCP)
What does PacketCable replace? - correct answers record keeping, quality
management, call set up and tear down, and analog-to-digital signal
processing found in traditional telephone service
A PacketCable-managed network architecture enables cable operators to... -
correct answers control latency, packet loss, and jutter to provide VoIP
telephone service as good as POTS
What is implied when some says that telephone service is delivered using
circuit switching technology? - correct answers POTS (plain old telephone
service)
What has a minimum color depth of 10 bits, which provides up to 1,024
shades of each color? - correct answers high-dynamic range (HDR)
What adds the perception of picture depth by displaying an image from two
slightly different angles? - correct answers 3D HDTV
What defines two scanning formats, interlaced or progressive? - correct
answers high definition TV (HDTV)
What has a display resolution of at least eight million active pixels? - correct
answers ultra-high definition television (UHDTV)
With Internet protocol TV (IPTV) the only channels transported on the network
are... - correct answers those selected by customers from a server in the
headend
, True or False. Internet protocol TV (IPTV) enables telephone companies to
offer as many or more TV channels than a broadband cable operatore. -
correct answers True
What feature of digital TV (DTV) technology did cable operators use until
there was demand for high definition TV (HDTV) services? - correct answers
video compression
Which was the first version of the Data Over Cable Service Interface
Specification (DOCSIS) that enabled multiple downstream and upstream
channels to be used to transport data to and from a single modem? - correct
answers DOCSIS 3.0
Which generation of wireless access technology is operation in the millimeter
frequency band around 30 GHz being considered? - correct answers 5G for
the fifth generation
Which is the only 802.11 series of standards that operate at 900 MHz for
reliable, slower-throughput connectivity with Internet of Things (IoT) sensors in
the customer's home? - correct answers 802.11ah
Voice activated personal assistants are always listening for commands, but
are programmed to respond only when hearing what? - correct answers a
wake word, such as the assistant's name
What technology is plain old telephone service (POTS) built on? - correct
answers circuit switching
Why is the transmission control protocol (TCP) unsuitable for voice over
Internet protocol (VoIP) applications? - correct answers TCP created delays
(Combined) Question and answers
already passed
Which DOCSIS version was released to support Packet Cable, an IP-based
platform for telephone service over a DOCSIS access network? - correct
answers DOCSIS 1.1
Which DOCSIS version was the first to enable multiple downstream and
upstream channels to be used to transport data to and from a single modem?
- correct answers DOCSIS 3.0
Which DOCSIS version was released to improve the data throughput of the
upstream by doubling the maximum bandwidth of the upstream carrier
channel from 3.2 MHz to 6.4 MHz? - correct answers DOCSIS 2.0
Which DOCSIS version was the first to utilize orthogonal frequency division
multiplexing (OFDM)? - correct answers DOCSIS 3.1
What was the first generation of cellular technology capable of Internet access
known as? - correct answers 3G
What is the framework that calls for peak data rates that approach 100Mbps
when the user is mobile, and 1 gigabit per second (Gbps) when stationary)
called? - correct answers 4G
What network standard operates at a millimeter frequency band around 30
GHz being considered? - correct answers 5G
,True or False. A high-pass filter (HPF) is installed in a Multimedia over Coax
Alliance (MoCA) home network for isolation from a broadband cable network.
- correct answers False
True or False. A point-of-entry (POE) filter prevents snooping into the
customer's MoCA network providing some network security. - correct answers
True
True or False. Voice activated personal assistants are always listening for
commands, but are programmed to respond only when hearing a wake word,
such as the personal assistant's name. - correct answers True
True or False. Interactive electronic program guides (EPG) were introduced
with DTV to enable customers to use voice commands. - correct answers
False
What transformed two-way cable TV networks into a broadband cable
networks? - correct answers DOCSIS defined methods for building and
equipping a two-way cable TV network
What protocol prioritizes speed of packet delivery (over accuracy) and is used
for real-time applications such as VoIP, streaming video, and interactive
gaming? - correct answers User datagram protocol (UDP)
What was created to distinguish voice packets from other packet types? -
correct answers Multiprotocol label switching (MPLS)
Which protocol offers an alternative telephone service delivered over the
Internet? - correct answers Voice over Internet protocol (VoIP)
,What protocol created delays from sequencing, error correction,
acknowledgements, etc, which are unacceptable for a quality telephone call? -
correct answers Transmission control protocol (TCP)
What does PacketCable replace? - correct answers record keeping, quality
management, call set up and tear down, and analog-to-digital signal
processing found in traditional telephone service
A PacketCable-managed network architecture enables cable operators to... -
correct answers control latency, packet loss, and jutter to provide VoIP
telephone service as good as POTS
What is implied when some says that telephone service is delivered using
circuit switching technology? - correct answers POTS (plain old telephone
service)
What has a minimum color depth of 10 bits, which provides up to 1,024
shades of each color? - correct answers high-dynamic range (HDR)
What adds the perception of picture depth by displaying an image from two
slightly different angles? - correct answers 3D HDTV
What defines two scanning formats, interlaced or progressive? - correct
answers high definition TV (HDTV)
What has a display resolution of at least eight million active pixels? - correct
answers ultra-high definition television (UHDTV)
With Internet protocol TV (IPTV) the only channels transported on the network
are... - correct answers those selected by customers from a server in the
headend
, True or False. Internet protocol TV (IPTV) enables telephone companies to
offer as many or more TV channels than a broadband cable operatore. -
correct answers True
What feature of digital TV (DTV) technology did cable operators use until
there was demand for high definition TV (HDTV) services? - correct answers
video compression
Which was the first version of the Data Over Cable Service Interface
Specification (DOCSIS) that enabled multiple downstream and upstream
channels to be used to transport data to and from a single modem? - correct
answers DOCSIS 3.0
Which generation of wireless access technology is operation in the millimeter
frequency band around 30 GHz being considered? - correct answers 5G for
the fifth generation
Which is the only 802.11 series of standards that operate at 900 MHz for
reliable, slower-throughput connectivity with Internet of Things (IoT) sensors in
the customer's home? - correct answers 802.11ah
Voice activated personal assistants are always listening for commands, but
are programmed to respond only when hearing what? - correct answers a
wake word, such as the assistant's name
What technology is plain old telephone service (POTS) built on? - correct
answers circuit switching
Why is the transmission control protocol (TCP) unsuitable for voice over
Internet protocol (VoIP) applications? - correct answers TCP created delays
