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ROC II, COURSE I: STUDY GUIDE (COMBINED) 2024/25 QUESTIONS WITH 100% CORRECT ANSWERS!!
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ROC II, COURSE I: STUDY GUIDE (COMBINED) 2024/25 QUESTIONS WITH 100% CORRECT ANSWERS!!
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ROC II, COURSE I: STUDY GUIDE (COMBINED)2024/25 QUESTIONS WITH 100% CORRECT
ANSWERS!!
Which DOCSIS version was released to support PacketCable, an IP-based
platform for telephone service over a DOCSIS access network? Answer -
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?
Answer - 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? Answer - DOCSIS 2.0
Which DOCSIS version was the first to utilize orthogonal frequency division
multiplexing (OFDM)? Answer - DOCSIS 3.1
What was the first generation of cellular technology capable of Internet access
known as? Answer - 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? Answer - 4G
What network standard operates at a millimeter frequency band around 30
GHz being considered? Answer - 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.
Answer - False
True or False. A point-of-entry (POE) filter prevents snooping into the
customer's MoCA network providing some network security. Answer - 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. Answer - True
True or False. Interactive electronic program guides (EPG) were introduced with
DTV to enable customers to use voice commands. Answer - False
What transformed two-way cable TV networks into a broadband cable
networks? Answer - 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? Answer - User datagram protocol (UDP)
What was created to distinguish voice packets from other packet types?
Answer - Multiprotocol label switching (MPLS)
Which protocol offers an alternative telephone service delivered over the
Internet? Answer - Voice over Internet protocol (VoIP)
,What protocol created delays from sequencing, error correction,
acknowledgements, etc, which are unacceptable for a quality telephone call?
Answer - Transmission control protocol (TCP)
What does PacketCable replace? Answer - 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...
Answer - 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? Answer - POTS (plain old telephone service)
What has a minimum color depth of 10 bits, which provides up to 1,024 shades
of each color? Answer - high-dynamic range (HDR)
What adds the perception of picture depth by displaying an image from two
slightly different angles? Answer - 3D HDTV
What defines two scanning formats, interlaced or progressive? Answer - high
definition TV (HDTV)
What has a display resolution of at least eight million active pixels? Answer -
ultra-high definition television (UHDTV)
With Internet protocol TV (IPTV) the only channels transported on the network
are... Answer - 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. Answer -
True
What feature of digital TV (DTV) technology did cable operators use until there
was demand for high definition TV (HDTV) services? Answer - 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? Answer -
DOCSIS 3.0
Which generation of wireless access technology is operation in the millimeter
frequency band around 30 GHz being considered? Answer - 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? Answer - 802.11ah
Voice activated personal assistants are always listening for commands, but are
programmed to respond only when hearing what? Answer - a wake word, such
as the assistant's name
What technology is plain old telephone service (POTS) built on? Answer -
circuit switching
Why is the transmission control protocol (TCP) unsuitable for voice over
Internet protocol (VoIP) applications? Answer - TCP created delays from
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