ROC II, Course I: Study Guide (Combined) Updated 2024/2025 Verified 100%
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ROC II,
What transformed two-way cable TV networks into a broadband cable networks? - DOCSIS
defined methods for building and equipping a two-way cable TV network
True or False. A high-pass filter (HPF) is installed in a Multimedia over Coax Alliance (MoCA) home
network for isolation from a broadband ca...
ROC II, Course I: Study Guide
(Combined)
What transformed two-way cable TV networks into a broadband cable networks? - DOCSIS
defined methods for building and equipping a two-way cable TV network
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. - False
Which DOCSIS version was released to support PacketCable, an IP-based platform for telephone service
over a DOCSIS access network? - 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? - 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? - DOCSIS 2.0
Which DOCSIS version was the first to utilize orthogonal frequency division multiplexing (OFDM)? -
DOCSIS 3.1
What was the first generation of cellular technology capable of Internet access known as? - 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? - 4G
What network standard operates at a millimeter frequency band around 30 GHz being considered? -
5G
True or False. A point-of-entry (POE) filter prevents snooping into the customer's MoCA network
providing some network security. - 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. -
True
True or False. Interactive electronic program guides (EPG) were introduced with DTV to enable customers
to use voice commands. - False
What protocol prioritizes speed of packet delivery (over accuracy) and is used for real-time applications
such as VoIP, streaming video, and interactive gaming? - User datagram protocol (UDP)
What was created to distinguish voice packets from other packet types? - Multiprotocol label
switching (MPLS)
Which protocol offers an alternative telephone service delivered over the Internet? - Voice over
Internet protocol (VoIP)
What protocol created delays from sequencing, error correction, acknowledgements, etc, which are
unacceptable for a quality telephone call? - Transmission control protocol (TCP)
What does PacketCable replace? - 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... - 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? -
POTS (plain old telephone service)
What has a minimum color depth of 10 bits, which provides up to 1,024 shades of each color? -
high-dynamic range (HDR)
,What adds the perception of picture depth by displaying an image from two slightly different angles? -
3D HDTV
What defines two scanning formats, interlaced or progressive? - high definition TV (HDTV)
What has a display resolution of at least eight million active pixels? - ultra-high definition
television (UHDTV)
With Internet protocol TV (IPTV) the only channels transported on the network are... - 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. - True
What feature of digital TV (DTV) technology did cable operators use until there was demand for high
definition TV (HDTV) services? - 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?
- DOCSIS 3.0
Which generation of wireless access technology is operation in the millimeter frequency band around 30
GHz being considered? - 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? - 802.11ah
Voice activated personal assistants are always listening for commands, but are programmed to respond
only when hearing what? - a wake word, such as the assistant's name
What technology is plain old telephone service (POTS) built on? - circuit switching
, Why is the transmission control protocol (TCP) unsuitable for voice over Internet protocol (VoIP)
applications? - TCP created delays from sequencing, error correction, acknowledgements, etc,
which are unacceptable for a quality telephone call
What does a cell phone seek when it tunes to its control channel frequency? - the system
identification code (SID) assigned to the phone
How is the perception of three-dimensional high definition TV (3D HDTV) created? - by displaying
an image from two slightly different angles, like a pair of human eyes
High-dynamic range (HDR) video calls for a minimum color depth of 10-bits, which provides up to how
many shades of each color? - 1,024
In what applications are broadband cable operators implementing Internet protocol TV (IPTV)
technology? - in TV everywhere applications
What is the binary equivalent of decimal number 47? - 00101111
What is the binary equivalent of decimal number 65? - 01000001
What is the binary equivalent of decimal number 140? - 10001100
For decimal number 210, what is the binary number? - 11010010
The digital aspect of the telegraph concerns the circuit having what? - two states - open, or off
(when the switch is raised) and closed, or on (when the switch is down)
What is the binary code and hex code for the character [LANE FEED]? - binary - 0001010
hex - A
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