Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Jeopardy 2014 Tech > CT3 > Flashcards

CT3 Flashcards

1
Q

Aspect ratio of HDTV

A

16:9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Preferred method of coax cable routing

A

Home Run

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is CRT?

A

cathode ray tube

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What four services are business class TV customers not eligible to receive?

A

PPV
VOD
DVR
Premium channels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does REN stand for?

A

Ring equivalency number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How much REN do we suppoprt?

A

5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

DOCSIS

A

Data Over Cable Services Interface Specification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What ensures interoperability of cable modems from various manufacturers?

A

DOCSIS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does MoCA stand for?

A

Multimedia over Coax Alliance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Name four COMCAST business services

A

TV
Phone
Internet
Teleworker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the delay between transmission and arrival of a packet?

A

latency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is it called when packets are received in the wrong order?

A

jitter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

In general, business customers sign a __ to __ year contract.

A

2 to 5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does the term POTS mean?

A

Plain Old Telephone System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the name of the dial tone a customer will hear when they have voicemail?

A

stutter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what does CMTS stand for?

A

Cable Modem Termination System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How many pairs should there be in a fax machine flat satin?

A

1 pair

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What does EDTV stand for?

A

Enhanced Definition TV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the resolution of EDTV?

A

480p

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does eMTA stand for?

A

embedded mutimedia terminal adapter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

All lights flashing on an eMTA indicate what type of problem?

A

Foreign Voltage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What does VOIP stand for?

A

Voice Over Internet Protocol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

List the 3 pairs in order of older station wire?

A

Green/Red Black/Yellow White/Blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What tools can you use to check polarity on a phone line?

A

Butt Set and Toner

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Internet phone services transmit calls over a ______ network.

A

Public

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the supervisory voltage provided by an eMTA?

A

48 VDC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What connection type provides both audio and video?

A

HDMI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Out of the following colors: Green/Red Yellow/Black list the tip and ring.

A

green-tip
red-ring
yellow-ring
black-tip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is DHCP?

A

Dynamic Host Configuration Protocol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is QAM?

A

Quadrature Amplitude Modulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What frequencies are assigned to the downstream and upstream?

A

Up- 5-42 Mhz

Down- 54-1000 Mhz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

List 2 types of call forwarding.

A

Selective

Variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the 4 step troubleshooting process?

A

Identify
Isolate
Repair
Verify

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What are 3 ways to access voicemail?

A

*99
Xfinity Connect
VM Access

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What is ICFR?

A

In Channel Frequency Response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Ring voltage for CDV?

A

60-90 V AC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

5 factors of attenuation

A 
Diameter of center conductor
Dielectric
Frequency
Temperature
Length of cable
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What is the difference between dB and dBmV?

A

dB is relative

dBmV is absolute

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Multiple carriers oscillating at different frequencies transported in the same medium is what?

A

Frequency Division Multiplexing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Passage of outside signal into the cable is known as what?

A

Ingress

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Signal leaking out of the system is known as what?

A

Egress

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

What are the three main components of a home theater system?

A

Audio
Video
Environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

List the 4 main types of displays

A

Direct view
Rear Projection
Front projection
Flat Panel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Latent or out of sync audio is known as?

A

Lip sync

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

MPEG identifies and removes what type of information between successive frames of the picture?

A

Redundant / Static

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Separating successive frames into two types of video information is also known as what?

A

compression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

What is a rugged, inexpensive to repair bandwidth versatile transmission medium?

A

Coaxial cable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

A home run system is also known as what?

A

Star topology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Formula for voltage

A

E=IxR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

What does DLNA stand for?

A

Digital Living Network Alliance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

What are the 3 troubleshooting areas in CDV?

A

Before eMTA
At eMTA
After eMTA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

What numbers do you need to dial in order to place an international call?

A

011 + country code

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

DHCP

A

Dynamic Host Configuration Protocol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

What is the measure of voice, data and or video quality provided to a customer called?

A

Quality of Service (QoS)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

What is our loop current?

A

23-40 mA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

List 2 safety precautions to take before working on phone lines.

A

Disconnect ILEC

Disconnect eMTA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

When an eMTA is upgrading firmware what lights are flashing?

A

U/S and D/S

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

If the power light is flashing on an eMTA it indicates what?

A

AC power failure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

What tool can you use to connect your butt set to a modular outlet?

A

banjo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

The twists in CAT5 wire help to prevent these 2 things?

A

crosstalk

noise

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

What type of cable is needed to backfeed an eMTA to a wallplate?

A

electrically straight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

Excess debris left in a punch down block that can cause a short is known as?

A

shiners

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

ILEC

A

Incumbent Local Exchange Carrier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

What defines where COMCAST may physically disconnect a customer from the ILEC network?

A

Interconnection Agreement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

When troubleshooting a data device what is the first thing you should check?

A

dial tone and polarity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

What must be placed between the eMTA and the customers telephones if they have an alarm system?

A

RJ31X

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

Businesses can add what services a la carte?

A

HD
Music Choice
Multi Latino
Sports Packages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

What is an internet product for companies that have a mobile workforce?

A

Teleworker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

How many email addresses are available to a teleworker customer?

A

7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

How would a teleworker customer add or disconnect accounts?

A

Teleworker order center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

What DOCSIS standard brought about channel bonding and IPv6?

A

DOCSIS 3.0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

What is DNS and what does it do?

A

Domain Name System

Translates the FQDN to an IP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

Connect RF to power in order to prevent what?

A

Ranging

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
74
Q

The cumulative effect of ingress from multiple homes is known as what?

A

Funnel effect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
75
Q

The number one cause of ingress and egress occurs where in the system?

A

Drop system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
76
Q

The number 1 cause of ingress and egress?

A

Poorly installed connectors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
77
Q

CPE

A

Customer Premise Equipment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
78
Q

A return path problem that is caused by the corrosion of dissimilar metals?

A

CPD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
79
Q

What audio format has 4 channels: Left, Right, Center, Surrounds

A

Dolby Pro Logic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
80
Q

3 types of audio formats with 5.1 channels.

A

DTS Neo:6
Dolby Digital
DTS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
81
Q

What essential supplies are needed for an Xfinity Internet installation?

A

Modem, cable installation materials (coaxial cable and splitters), welcome kits, ethernet cables

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
82
Q

What are the installation options for Xfinity Internet?

A

Self installation and professional installation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
83
Q

What should the work order contain prior to installation?

A

Customer’s name and address, account number, current comcast services, information specific to the order, modem information (including correct rate codes for modem installation), comcast.net username

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
84
Q

What essential supplies are needed for an Xfinity Internet installation?

A

Modem, cable installation materials (coaxial cable and splitters), welcome kits, ethernet cables

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
85
Q

What is a bit?

A

a single character of data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
86
Q

What is a Byte (B)?

A

8 bits, a larger amount of data but still

not very large.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
87
Q

What is a Kilobit (Kb)?

A

Roughly 1000 bits. Many Internet

applications measure speed in kilobits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
88
Q

What is a Gigabyte (GB)?

A

Roughly one thousand megabytes.
Gigabytes are common when talking
about hard drive storage.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
89
Q

What is a Megabit (Mb)?

A

Roughly one million bits. This is smaller
than a megabyte, but is a common
measurement for network bandwidth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
90
Q

Projects light from microscopic mirrors onto big, widescreen, rear-projection TVs (or micro-displays)

A

Digital Light Processing

DLP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
91
Q

What is the Pre-installation internet requirement to installing a CT3 cablecard in a PC?

A

An Internet connection MUST BE working prior to installation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
92
Q

Boosts low level signals from the components to the speakers.

A

Amplifier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
93
Q

Images result when electrically charged gases illuminate colored phosphors

A

Plasma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
94
Q

What type of cable fulfills the video requirement for an internal or external xfinity TV user?

A

A/B USB cable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
95
Q

What is a Gigabyte

(GB)?

A

Roughly one thousand megabytes.
Gigabytes are common when talking
about hard drive storage.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
96
Q

Includes audio and video input/output ports; Audio input to AV receivers internal preamplifier; Audio output fed to system speakers; Video for selected device is fed from the receivers output jacks to connected video display

A

Audio/Video Receiver

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
97
Q

What is the requirement PRIOR to installing a CT3 cablecard in a PC?

A

An Internet connection MUST BE working prior to installation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
98
Q

Toslink or EIA-J are types of what?

A

Optical Digital Audio connectors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
99
Q

Uses an RCA connector to carry Digital Audio

A

Coaxial Digital connection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
100
Q

Uses an RCA connector to Analog Audio

A

Stereo Connection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
101
Q

Creates a picture by shooting an electronic beam at a phosphor-coated glass screen

A

Cathode Ray Tube (CRT)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
102
Q

Creates images by passing light through a layer of liquid crystal sandwiched between two panes of polarized glass.

A

Liquid Crystal Display

LCD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
103
Q

Allows customers to link home TVs from any PC or hand-held device

A

Slingbox

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
104
Q

Uses LED backlighting instead of the cold cathode fluorescents CCFL

A

LED-backlit LCD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
105
Q

A general term for non-projection types of TVs, which include conventional tube TVs and flat-panel plasma and LCD TVs

A

Direct View TV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
106
Q

Changes the size of an image to fit the pixel size of a device without changing the shape

A

Scaler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
107
Q

Operates with beam of infrared light; components must be in line of sight with remote

A

Infrared Remote

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
108
Q

Consisting of a separate projector (typically placed on a table or ceiling-mounted) and screen; Can display images up to 20 feet across, or larger

A

Front Projection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
109
Q

Ideal if there is little or no space for a TV or projector; Can be hung on the wall; Can be plasma or LCD

A

Flat Panel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
110
Q

What is the pre-installation video requirement for a CT3 cablecard?

A

A) An internal or external xfinity TV Tuner

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
111
Q

Just launched by Comcast, these remotes talk to the STB via RF while using infrared to talk to the TV.

A

IR/RF Remote

XR2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
112
Q

Large 24-pin connector in which audio is not provided

A

DVI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
113
Q

4-pin video only connector

A

S-Video

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
114
Q

RCA wiring that uses Yellow Red and White connectors

A

Composite video

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
115
Q

Improves picture quality; Makes routing and distribution easier; Allows images to be displayed in different ways

A

Signal Processor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
116
Q

Enables multiple video and audio signals to be selected and sent to one or more display devices

A

Switcher

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
117
Q

What type of cable fulfills the video requirement for an internal or external xfinity TV user?

A

An A/B USB cable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
118
Q

Operate components located throughout the household; Generates signals of given radio frequency

A

RF Remotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
119
Q

Control all components; Can be programmed for individual components (uses 3 or 4 digit codes)

A

Universal Remotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
120
Q

Perform operations on more than one component; can usually learn commands

A

Programmable Remotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
121
Q

Control all components; Can be programmed for individual components (uses 3 or 4 digit codes)

A

Universal Remotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
122
Q

Perform operations on more than one component; can usually learn commands

A

Programmable Remotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
123
Q

Just launched by Comcast,these remotes talk to the STB via RF while using infrared to talk to the TV.

A

IR/RF Remote

XR2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
124
Q

How far should seating be away from TV for Optimum viewing in a Home Theater setup?

A

Seating should be two times the diagonal wide-screen TV away from TV (example: seating should be 84” away from a 42” TV screen)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
125
Q

Name 4 of the 6 equipment requirements for an external digital cable tuner setup.

A

1) Windows Vista Home Premium or Ultimate Edition
2) Vista digital cable compatible PC
3) DVD-ROM Drive
4) Audio Output Capabilities
5) Internet Access
6) Internal or External Xfinity TV Tuner with remote

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
126
Q

What is the second step in the installation checklist?

A

Ensure eMTA is on customer’s account

 If you are not using a handheld or laptop, call dispatch to verify.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
127
Q

What is the third step in the installation checklist?

A

Greet the customer

 Introduce yourself and explain that service will be temporarily disconnected.
 Ensure that the customer is NOT using an existing service (for example, downloading a file, recording a TV program, etc.) prior to starting to work.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
128
Q

What is the fourth step in the installation checklist?

A

Determine if additional jacks or wiring is needed

 If additional telephone jacks need to be installed, have the customer indicate where he/she wants them installed, and get sign-off of any extra costs.
 If additional wiring is needed, consult customer on preferences, and follow local guidelines regarding wiring policies.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
129
Q

What is the fifth step in the installation checklist?

A

Confirm work order

 Note changes and obtain agreement before work

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
130
Q

What is the sixth step in the installation checklist?

A

Determine if customer has an alarm system

 If yes, have customer put in ―test‖ or call the alarm company to test alarm.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
131
Q

What is the seventh step of the installation checklist?

A

 If yes, see page 36 for Door Entry System Considerations.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
132
Q

What is the eighth step in the installation checklist?

A

Give customer Welcome Kit

 Customer can look over while you do work.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
133
Q

What is the ninth step in the installation checklist?

A

Test and verify customer equipment

 Make a call from all the outlets the customer wants changed over to verify they are functioning properly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
134
Q

Equation for calculating Exact Loss

A

Cable Loss + Passive Loss = Total Loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
135
Q

Most trouble calls, including repeat trouble calls, in the CATV industry are found where?

A

Between the tap port and the customer’s television set.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
136
Q

The majority of troubles calls are due to what?

A

Poor connector installation or device attachments.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
137
Q

What types of problems can poorly installed F-Connectors cause the customer?

A 
Tiling
"One Moment Please" message
Ghosting
Distorted picture (hum)
Intermittent service
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
138
Q

The Top 5 Types of Connector Problems

A
  1. Moisture damage
  2. Long/short center conductor
  3. Connector not tightened to port
  4. Braid removed or too short/long
  5. Improper connector for cable type
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
139
Q

Why is it improper to cut a center conductor a second time to (trim it) to fit a fitting?

A

A jagged center conductor can scratch the contacts inside the F-port creating reflections.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
140
Q

Name 3 of the 6 best practices for F- Connector Installation

A
  1. Use a prep tool with a stop
  2. Use the side of the compression tool to recheck dimensions
  3. With the correct prep tool, all the dimensions (1/4”) are setup correctly.
  4. Make sure the dielectric is flush with post face
  5. Make sure you hear an audible “click” when using the torque wrench to ensure the connector is tightened properly.
  6. Always compress fully
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
141
Q

Name 5 of the 10 Best practices for Handling Coaxial Cable

A
  1. Do not use the wrong size clip
  2. Do not kink the cable
  3. Follow the cable’s bending radius
  4. Label each end of cable with a matching numbering system
  5. Do not allow a vehicle to run over the cable
  6. Always use a cable caddy when handling drop cable
  7. When pulling drop cable off a reel, do not pull loops out. Walk to the loop and unwnd it without kinking the cable.
  8. Never make 90-degree bends.
  9. Do not staple the cable
  10. Do not over tighten tie wraps, or stuff into house boxes.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
142
Q

What is the tenth step in the installation checklist?

A

Test and verify Comcast services

 Verify the Cable TV picture quality on all of the customer’s televisions. Be sure the cable modem has Block Sync and basic Web sites can be accessed prior to starting the installation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
143
Q

What is the eleventh step in the installation checklist?

A

Determine location of eMTA

 Place near customer’s primary computer, if possible
 Keep eMTA away from wireless devices, access by children/pets
 Avoid attics and spaces that are not temperature controlled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
144
Q

What is the twelve step in the installation checklist?

A

Complete Onsite Quality Assurance Check

 Check for signal leakage.
 Check for inferior/substandard cable, connectors, and
craftsmanship.
 Check for any filters/traps that may have existed within a
previous installation and remove.
 If Xfinity Internet does exist, check that the modem is
connected to a ―home run‖ coaxial outlet.
 If Xfinity Internet does not exist, determine the route for a coaxial cable from a splitter near the ground block to the customer’s PC location.
 Test to verify that the coaxial portion of the home wiring is properly bonded.
 Determine the route for a ―home run‖ phone line from the customer’s PC location to the NID.
 For customers with alarms systems, a ―home run’ phone line to the NID is a required practice to ensure the alarm equipment can seize the customer’s phone line to call out during a potential emergency scenario.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
145
Q

Series-6 cable bending radius:

A

2.5”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
146
Q

Series-7 cable bending radius:

A

4”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
147
Q

What are the two ways to typically connect the eMTA to the customer’s inside wiring?

A
  1. Direct line from NID to eMTA using Scotchlok connectors

2. Via a four-pair jumper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
148
Q

What is involved in the “Isolate” step of the troubleshooting process?

A
  1. Measure and record signal levels at outlets, splitter, ground block and tap
  2. Inspect all connectors, cable, and splitters and replace as needed
  3. Ensure all equipment is connected properly..
  4. Use Bypass Method to isolate bad equipment
  5. Perform Ingress Scan at both the ground block and the tap with all CPE connected.
  6. Use your Divide and Conquer techniques to cut the system in half to locate the fault
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
149
Q

What frequency range is tested in a downstream Ingress resistance test?

A

88-108 MHz

(FM Band) downstream

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
150
Q

What is the web address for most Comcast modems and eMTAs

A

http://192.168.100.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
151
Q

What frequency range is tested in an upstream spectrum test?

A

5-42 MHz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
152
Q

What is the acceptable measurement for both the upstream spectrum test and the Ingress resistance test?

A

-30 dBmV or lower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
153
Q

what are four benefits to an employer who uses teleworker?

A

Single contract, unified billing, online ordering and management, business class customer support

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
154
Q

what are four benefits of teleworker for employees?

A

Multiple connections, comcast.net email, after hours use, Portal services

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
155
Q

how any levels of teleworkers are there?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
156
Q

what are the names of of the two levels of teleworker?

A

Standard and enhanced

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
157
Q

what is the major difference between the two teleworker service levels?

A

speed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
158
Q

how does a technician know the a teleworker customer from a CHSI customer?

A

the work order

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
159
Q

what paper work does a technician give a teleworker at the end of the install?

A

None

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
160
Q

RF:

A

RF or Radio Frequency refers to an electromagnetic wave that generally falls in the frequency range of 3 kHz to 300 GHz.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
161
Q

MHz (Megahertz):

A

Equal to one million Hz. Video signal bandwidth is typically expressed in megahertz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
162
Q

All FM radio stations transmit in a band of frequencies between:

A

88 and 108 MHz

163
Q

Spectrum:

A

A range of wavelengths of electromagnetic emission

164
Q

AM radio:

A

535 kHz to 1.7 MHz

165
Q

Short wave radio:

A

5.9 to 26.1 MHz

166
Q

Aircraft navigation frequencies:

A

110 to 137 MHz

167
Q

Broadcast television stations: VHF low band channels 2 through 6

A

54 to 88 MHz

168
Q

Broadcast television stations: VHF high band channels 7 through 13

A

174 to 220 MHz

169
Q

The difference between transmitted and received power resulting from the loss through equipment, lines, or other transmission devices; usually expressed in decibels.

A

Attenuation

170
Q

Coax attenuation specifications are based on:

A

100 feet of cable at 68 deg F

171
Q

Each 10 degree increase in temperature results in a

A

1.2% increase in attenuation

172
Q

The variable in calculating attenuation is always

A

The frequency

173
Q

At 50 MHz, 100 feet of RG6 cable loses roughly

A

1.5 dBmV

174
Q

At 400 MHz, 100 feet of RG6 cable loses roughly

A

4 dB

175
Q

At 750 MHz, 100 feet of RG6 cable loses roughly

A

5.5 dB

176
Q

The insulating material separating two conductors such as that between the center conductor and sheath in a coaxial cable

A

Dielectric

177
Q

High frequencies travel in the very ____ of the center conductor

A

skin

178
Q

Damage to the copper or silver skin of the center conductor will directly affect ____ _________ signals

A

high frequency

179
Q

_____ ___________ utilize more of the cross-sectional area of the conductor and are more forgiving when it comes to imperfections in the copper plating

A

Lower frequencies

180
Q

The property of higher frequencies travelling on the outer portion of a conductor is called the ____ ______

A

skin effect

181
Q

A passive signal splitting device, with minimum signal loss between the input port and the output port (through loss), a specified coupling loss between the input port and the tap port (tap or coupler loss), and very high loss between the output port and tap port (isolation)

A

Directional coupler

182
Q

A subunit of a larger unit called the bel:

A

decibel

183
Q

Is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output

A

Gain

184
Q

An increase of 3 dB _______ the signal power

A

doubles

185
Q

Anytime an RF signal changes by 3 dB, the signal power is either _______ (+3 dB) or ___ __ ____ (-3 dB)

A

doubled

cut in half

186
Q

A signal of 0 dBmV corresponds to

A

1 mV across a 75-ohm impedance

187
Q

(Attenuation x Footage)

A

Cable Loss

188
Q

(Cable Loss + Passive Loss)

A

Total Loss

189
Q

(Known Level – Total Loss)

A

Expected Level

190
Q

A measure of the received carrier strength relative to the strength of the received noise

A

Carrier to Noise (C/N) ratio

191
Q

A network architecture developed by the cable industry, which typically uses fiber optic cables to bring signals to selected areas of the system called nodes, which are usually based on the number of subscribers to be served

A

Hybrid Fiber Coax (HFC)

192
Q

An advantage of fiber is:

A

It has bandwidth many times greater than coaxial cable and can travel great distances without amplification

193
Q

The width of a band of frequencies

A

Bandwidth

194
Q

Passage of an outside signal into the cable; can result in noise and disruption of the desired signal

A

Ingress

195
Q

A standard for home entertainment networking in which existing subscriber drop coaxial cabling and components are used to interconnect set-top boxes

A

MoCA

196
Q

Allows up to 16 devices on the network, with a maximum of 300 feet of cable

A

MoCA 1.1

197
Q

MoCA 1.1 offers ___ ____ MAC rates and __ node network extensions

A

175 Mbps

16

198
Q

MoCA 1.1 operates in the ___ – ____ MHz frequency

range

A

500 – 1500

199
Q

MoCA 2.0: offers net throughput MAC rates of ________

baseline mode) and _______ (enhanced mode

A

400 Mbps

800 Mbps

200
Q

MoCA 2.0 operates in the ___ - ____ MHz frequency range

A

500 - 1650

201
Q

To ensure that MoCA energy remains within the home, the CommTech 3 must install a __________ in the drop

A

POE filter

202
Q

FCC part 76.614

A

States that any leakage source which produces a field strength of 20 uV/m or greater at a distance of 3 meters in the aeronautical radio frequency bands shall be noted and such leakage sources shall be repaired within a reasonable period of time

203
Q

Three main features of OWE:

A

First Time User Experience (FTUE)

XFINITY Profile

Progress Bar

204
Q

The residential services are:

A

XFINITY TV
XFINITY Voice
XFINITY Internet
XFINITY Home

205
Q

Xfinity apps

A 
XFINITY Connect App
XFINITY Home App
XFINITY TV Go App
XFINITY Player App
XFINITY Remote App
XFINITY Wi-Fi App
206
Q

Suite of applications that enable customers to enjoy the services they have from Comcast on as many platforms as possible

A

Converged Products:

207
Q

Allows customers to make outgoing calls via a virtual telephone number using a mobile device without using wireless minutes

A

Voice 2go

208
Q

The three main components of a Home Theater system are:

A

Audio
Video
Environment

209
Q

There are three significant considerations in a Home Theater application

A

Audio quality
Audio formats
Audio equipment

210
Q

Latent or out-of-sync audio

A

Lip-Sync

211
Q

The different types of audio formats are:

A

Mono
Stereo
Surround Sound

212
Q

Key elements of a surround sound system are:

A

Preamplifier
Power Amplifier
Surround Sound Processor
Audio/Video Receiver

213
Q

Tiny dots that convey light and combine to form a video picture

A

Pixel

214
Q

Short for “picture element.”

A

Pixel

215
Q

The number of scans from the left side of the display to the right and back that occur in one second

A

Horizontal Scan Rate

216
Q

The number of times per second that the scan sequence is repeated from the top of the display

A

Vertical Scan Rate

217
Q

Visible fading of luminance between scan cycles on video displays

A

Flicker

218
Q

The method of displaying television pictures in which the picture is displayed in two halves (one of odd-numbered lines, one of even-numbered lines), that are interlaced together to create the full picture

A

Interlaced scanning

219
Q

Standard television pictures are composed of ___ horizontal lines that scan across the screen in less than the blink of an eye

A

480

220
Q

The ____ format utilizes two sequential fields of 540 lines each

A

1080i

221
Q

Interlacing produces __ fields or __ complete frames every second

A

60

30

222
Q

Television pictures are displayed in a single pass, instead of the two fields used with interlaced scanning

A

progressive scanning

223
Q

The common progressive scan standards that you will see are:

A

480p, 720p, and 1080p

224
Q

Identifies and removes redundant information between successive frames of the picture

A

MPEG compression

225
Q

Separating successive frames into two types of video information—that which remains unchanged from frame to frame, and that which is updated frame to frame

A

Digital Compression

226
Q

The most important part of a Home Theater system is the?

A

video display

227
Q

The three main steps involved in site preparation when installing new equipment in a customers home are:

A

Determining customer expectations
Analyzing the current setup
Planning the signal flow

228
Q

A common problem with Home Theater systems is:

A

no picture or poor picture

229
Q

The most common causes of picture failure in a Home Theater system are:

A

Wrong display settings.
Lack of power to various components.
Cable routing malfunction, loose or disconnected cables

230
Q

Ground loop issues are basically caused by

A

A 60-cycle AC component in the audio connections

231
Q

When multiple carriers oscillating at different frequencies are transported simultaneously in the same medium

A

Frequency Division Multiplexing (FDM)

232
Q

A return path impairment that can have a severe effect on return path signal quality

A

CPD

233
Q

The transfer of energy from one device to another is most successful when both devices are of the same

A

Impedance

234
Q

Signals propagate through either of two mediums

A

guided and unguided

235
Q

Provides a physical path along which the signals are transported; such as those used in cable TV

A

Guided media

236
Q

Can be water or the air around us. The signal is transmitted from a transmit antenna to a receive antenna

A

Unguided media

237
Q

Three components of an electrical circuit:

A

Voltage
Current
Resistance

238
Q

The electromotive force (or pressure) that causes electrons to flow in a circuit

A

Voltage (E)

239
Q

The amount of pressure required to cause one ampere of current to flow through one ohm of resistance

A

One volt

240
Q

The flow of electrons through a conductor

A

Current (I)

241
Q

The opposition a material offers to the flow of electrical current

A

Resistance (R)

242
Q

One coulomb passing a given point in one second is equivalent to

A

One amp

243
Q

German physicist, investigated galvanic currents and established the mathematical relationship between voltage, current, and resistance

A

Georg Simon Ohm

244
Q

voltage =

A

current X resistance

245
Q

A flow of IP data supplied to a processor at a rate fast enough for
real-time decoding

A

Streaming

246
Q

Enables media files—movies, TV shows, music, and so on—to be played on TV, from various sources like computers, hard drives, the Internet, and media servers

A

Home Media Streaming

247
Q

An all-in-one device that connects the customer’s Internet, phone, and home networking, enabling them to share files with computers and other electronic products that are connected to their home network

A

Wireless Gateway

248
Q

A term used in IP telephony for methodologies and transmission techniques that manage the delivery of voice, using IP packets

A

Voice over Internet Protocol (VoIP)

249
Q

Three ways a customer can access Enhanced Voicemail:

A
  1. Dial *99
  2. Dial home telephone number
  3. Online, through XFINITY Connect
250
Q

A customer can access Enhanced Voicemail while away from home by
pressing

A

, once the greeting begins

251
Q

Customers can easily check their email, listen to voicemail, and manage their address book and calendar from any computer with an internet connection.

A

XFINITY Connect

252
Q

XFINITY Connect allows customers to:

A

Review call history

Easily manage everything related to their account without calling Customer Service

253
Q

How customers can access XFINITY Connect:

A

If a customer has XFINITY Internet and XFINITY Voice, the login is their primary email username and password.

If a customer is only subscribing to XFINITY Voice, the login will be the XFINITY Voice 10-digit home telephone number and voicemail password.

For a new voicemail setup, simply dial *99, the system will prompt you to create a new passcode. Note, the last four digits of the telephone number is NO LONGER the default passcode.

254
Q

website to access Xfinity Connect

A

https://login.comcast.net/login

255
Q

Phone service that transmits telephone calls over a public network, such as the Internet

A

IP Telephony

256
Q

A term used in IP telephony for methodologies and transmission techniques that manage the delivery of voice, using IP packets

A

VoIP

257
Q

Technology used to transmit voice and related calls over a data network

A

IP Phone/IP Voice

258
Q

A device that allows the telephone company to route and connect customers to one another

A

Telephone Switch

259
Q

Worldwide network of public circuit-switches used by traditional, local, and long-distance companies

A

Public Switched Telephone Network (PSTN)

260
Q

Central Office (CO) server that routes calls to other IP-based phones or through the PSTN

A

Soft switch (Software Switch, VoIP Switch, or CMS)

261
Q

A telephone line dedicated to a specific subscriber. This line sends signals through the system, based on a subscriber making and receiving calls.

A

Subscriber Line

262
Q

A site where telecommunications companies (such as cellular and long-distance providers) physically interconnect their systems with other networks (such as local telephone companies or cable companies)

A

Point of Presence (POP)

263
Q

A condition caused when packets are not received in the correct order, or when they take too long to arrive at their destination.

A

Jitter

264
Q

Delay associated with inconsistencies, or impairments, in the data transport stream.

A

Latency

265
Q

Voice packets are given priority over other types of data traveling within the Comcast network. This managed delivery ensures high-quality voice packet interpretation.

A

Dynamic Quality of Service (DQoS)

266
Q

The only time a call from an XFINITY Voice customer may use the public Internet is when the receiving party is using an ______________________.

A

internet-based service

267
Q

When a telephone is on-hook, there is a potential difference of 48 volts between the tip and ring. This is called?

A

Supervisory or idle voltage

268
Q

Ring voltage:

A

It may be anywhere from 60–90 Volts Alternating Current (VAC) at a frequency of 20 Hz.

269
Q

In North America, a ____ pattern is the standard ring cycle.

A

2-4, two seconds of ring voltage followed by a four-second pause

270
Q

In legacy telephone networks, talk battery and ring voltage come from the?

A

Central Office

271
Q

Always disconnect the inside wire (IW) from the_________ before working on the wiring.

A

NID or eMTA

272
Q

The total REN value in an individual circuit should not be greater than?

A

5

273
Q

CPE that may have REN specifications:

A 
Answering machine
Fax machine
Phone modem
Monitoring devices
Alarm systems
274
Q

The voice portion of the eMTA can interpret both

A

DTMF and pulse signaling

275
Q

Also known as Touch-Tone, this form of audio signaling was introduced by Western Electric in 1963

A

DTMF: Dual-tone multi-frequency signaling

276
Q

In earlier pulse dialing systems, noise generated in the copper pairs could be interpreted as a pulse by the switch rendering:

A

Wrong telephone numbers

277
Q

An eMTA features up to ____ hours talk time and up to _____ hours of standby battery

A

five

seven

278
Q

An eMTA features up to ____ hours talk time and up to _____ hours of standby battery

A

five

seven

279
Q

When utilizing an in-house amplifier, the eMTA must be connected to a:

A

passive port

280
Q

If the customer has opted for a backup battery, it is recommended that they also have a ___________ on hand, in the event of a power outage.

A

wired phone

281
Q

eMTA Location Guidelines

A

Place near customer¡¦s primary computer, if possible.

Do not place eMTA in an attic or unheated basement space.

Do not place the eMTA too close to a furnace or in any other area that is environmentally unsuitable for the unit.

Keep away from wireless devices, and access by children or pets.

Ensure adequate ventilation

282
Q

Do not place an in-home amplifier between the tap and the eMTA unless the amplifier has an approved:

A

eMTA port

283
Q

eMTA battery provides _____________ hours of standby time in case of power outage

A

five to seven

284
Q

Backup batteries will not be available for purchase from Comcast by customers subscribing to:

A

“Unlimited Select.”

285
Q

All of a sudden, the eMTA Link lamp or LED goes off. What could be the reason?

A

Ethernet cable disconnected, or computer has been powered

down. Possibly the router has lost power

286
Q

What does the eMTA Telephone light do when the telephone is off the hook?

A

The lamp flashes

287
Q

What does the eMTA Telephone light do when the telephone is off the hook?

A

The lamp flashes

288
Q

How do you know if the eMTA battery is low?

A

Indicates a low battery

289
Q

If all the lights flash, it is an indication that:

A

foreign voltage is present.

290
Q

Name two ways to discourage the customer from unplugging the eMTA from a dual jack when they are trying to unplug their phone.

A

Wire in such a manner that the eMTA is plugged into the bottom jack to minimize accidental disconnection

Use a red “Do not remove” tag to block the unused port

291
Q

Once the eMTA is hooked up, you can access a GUI to check signal levels by using:

A

192.168.100.1

292
Q

Line test set common features:

A

» Monitor mode (on hook): Primarily for monitoring of a telephone line while on hook.

» Talk mode (off hook): Will draw dial tone and is used to test the analog phone line

» Speaker phone: Provides hands-free listening in both monitor and talk modes

» Polarity test: Used to check polarity of the tip and ring, for tone signaling, and receiving signal from the tone-generating unit

» Talk battery: The butt set can power a wire pair for voice communications

» Dialing and calling capability

293
Q

Indicates the pair polarity, detects a short circuit, and indicates the presence of “talk battery” (connection to the network)

A

Toner

294
Q

Older wiring is often referred to as ____________, or Category 1 (CAT 1) wire.

A

station wire

295
Q

With station wire the_____ and___ wires are used for the primary line.

A

green

red

296
Q

The twists in Category 3,5 and 6 wire help prevent __________ and cancel out noise that might be induced onto the wire from adjacent pairs or exposed wire.

A

cross talk

297
Q

All the wires used at Comcast start with “white” because white (tip) refers to the first five pairs:

A 
» White/Blue
» White/Orange
» White/Green
» White/Brown
» White/Slate
298
Q

____________________ silver satin cables should always be used from the eMTA to the wall jack, to prevent reverse polarity.

A

Electrically straight

299
Q

4P4C connector -

A

4 wire (handset coil cord)

300
Q

6P2C connector -

A

2 wire – RJ11 – one phone

301
Q

6P4C connector -

A

4 wire – RJ14 – two phones

302
Q

6P6C connector -

A

6 wire - RJ25 – three phones

303
Q

8P8C connector -

A

8 wire – RJ45 - Ethernet

304
Q

Contrary to popular belief, the handset cord is not a ______________ It has been erroneously referred to as an RJ22, RJ10, or RJ9. It is simply a unique sized 4P4C connector designed for the handset.

A

registered jack

305
Q

When a fax machine is used with XFINITY Voice, the fax machine will:

A

Share the incoming phone line

306
Q

Pre-installation Guidelines

A

Verify that tools and equipment have been charged

Stock XFINITY Voice Welcome Kits

Ensure that pocket guides/other resources are available

Know how to use the mobile device/laptop and the IVR
Understand troubleshooting steps

Check work order; find out whether the customer requires a DOCSIS 3.0 device

Verify that XFINITY Voice is shown on the work order before attempting the installation

307
Q

What to do before beginning the actual installation

A

Confirm that the job is indeed what the customer ordered

Determine if additional jacks or wiring is needed

Hand the customer a Welcome Kit

Determine if the customer has a monitored alarm system

Ask if the telephone is connected to an entry buzzer or door-entry system

Ask the customer what devices they have at home that are connected to the telephone line. This will help in ensuring compatibility.

If there is a monitored security alarm, have the customer notify the alarm service to test the functionality of the alarm system.

Once tested and verified, or if alarm is not monitored, ask the customer to place the alarm in “test” mode.

308
Q

In a ____________ wiring configuration, the twisted-pair coming in from the NID goes, consecutively, through all the phone jacks

A

loop-through

309
Q

In homes with loop-through wiring, the primary line may have been moved to the ____________ pair because of damage to the _________ pair somewhere in the wall

A

black/yellow

red/green

310
Q

Disadvantage of loop-through wiring configurations

A

If one part of the loop goes bad, the rest of the circuit is often affected.

It inhibits/complicates addition of a special service, such as a fax machine, to just one phone jack.

311
Q

In a home-run wiring configuration, also known as ____, each outlet is fed directly from a central location

A

star

312
Q

When to use back-feed installation:

A

After determining that the existing wire can support a back-feed, and that it is the most reliable and efficient solution

313
Q

When to use dedicated feed:

A

Whenever the customer has a PBX and/or monitored alarm system or when the existing phone jack wiring is determined to be faulty

314
Q

Disadvantage of dedicated feed installation:

A

Requires spare pairs that are not always available

May require installation of an additional telephone wire to facilitate the feed

315
Q

Only _________ alarm systems should be connected to the phone service

A

monitored

316
Q

Allows an alarm panel to control access to active phone pairs, and seize those pairs even if the customer is using the telephone

A

Line seizure

317
Q

Be sure that the alarm system is in ________ before beginning work, to ensure that an alarm is not triggered

A

Test Mode

318
Q

Some ILECs utilize “______________,” a service that keeps talk battery on the pairs even if the location no longer subscribes to their phone service

A

soft dial tone

319
Q

Before the eMTA can be connected to the customer’s home wiring, the existing service must be disconnected at the?

A

NID

320
Q

Unplugging the modular connector in the NID is a safety step. It prevents?

A

being hit by ring voltage

321
Q

Insulate wiring disconnected at the NID with __________or similar if it is going to have continuity back to the eMTA.

A

Scotchloks

322
Q

What is the preferred method of connecting the eMTA to the house wiring?

A

Disconnect the ILEC and connect the eMTA with a dedicated line to the NID

323
Q

An _____ jack isolates the alarm panel from the eMTA in the telephone circuit.

A

RJ31X

324
Q

In a phone installation with an alarm system, a _________ _____ _____ is always the first active device in the telephone circuit

A

monitored alarm panel

325
Q

Exceptions to opening the alarm panel:

A

When you do not know the color/pair of inside wiring that has been previously used to supply dial tone from the NID to the RJ31X

When you need to isolate a trouble condition

326
Q

Rule of Three for XFINITY Voice:

A
  1. Confirm the customer’s new telephone number
    .
  2. Illustrate how to use voicemail, referencing the steps in the Welcome Kit.
  3. Talk about XFINITY Connect where customers can go online to check voicemail, see call history, or set options
327
Q

There are three methods for activating XFINITY Voice services. They are (in order of preference):

A
  1. Via the workforce management application on the company-issued mobile device or laptop
  2. Via the Online Tech Activation Tool, using the customer’s computer
  3. Via the Interactive Voice Response (IVR).
328
Q

Often called Cable Modem MAC, is typically used when provisioning an installation for both XFINITY Voice and Internet

A

CMAC

329
Q

Refers to the telephone only portion of the eMTA. It is typically used for provisioning XFINITY Voice when using the IVR

A

MTA-MAC

330
Q

MAC address added to the customer’s account in CSG/ACSR markets

A

CMAC

331
Q

Typically used for provisioning XFINITY Voice when using the IVR.

A

MTA-MAC

332
Q

Used for provisioning via the mobile device in AMDOCS/Comtrac/Cable Data markets

A

The serial number

333
Q

An eMTA or modem that has not been activated receives a ____________boot file which allows it to communicate with our network but not surf the Internet

A

walledgarden

334
Q

After activation the first test call:

A

verifies inbound calling, long distance, and calling features

335
Q

After activation and placing the first test call, keep the first test call connected and prompt a second test call to validate:

A

call waiting and voicemail

336
Q

If a password is required, to validate voice mail, use?

A

the last four digits of the telephone number

337
Q

Use only________________to connect the fax machine

A

single pair silver satin (two wires)

338
Q

Single pair silver satin utilizes pins ______ of the connector

A

2 and 3

339
Q

Why do we only use single pair silver satin wire for fax machines?

A

Using two-pair (four wire) silver satin may allow voltage to be present on pins 1 and 4 of the modular connector. The eMTA provides supervisory voltage on pair two even if the customer subscribes to only one phone line. This pair two voltage wreaks havoc with several models of fax.

340
Q

There are three categories that can help us determine where an XFINITY Voice problem may occur

A

RF or coax

Copper wiring or jacks

The eMTA

341
Q

Keenness and depth of perception, discernment, or discrimination especially in practical matters

A

Acumen

342
Q

The ability to make good judgments and quick decisions, typically in a particular domain

A

Business acumen

343
Q

The Comcast Credo

A

“We will deliver a superior experience to our customers every day. Our products will be the best and we will offer the most customer-friendly and reliable service in the market.”

344
Q

Two versions of Business TV:

A

Private View

Public View

345
Q

Typically private/professional businesses where food and/or alcohol is not sold for immediate consumption/not the main source of revenue.

A

Private View

346
Q

Includes, but is not limited to, locations where the bulk of the revenue is derived from the sale of food and/or alcohol

A

Public View

347
Q

Some services available to Residential customers are excluded in Business Services. The excluded services are:

A

DVR

VOD

Impulse PPV (IPPV)

Premium channels

348
Q

Business TV is not available to venues that:

A

Charge an admission or entry fee. (However, a monthly or yearly membership is not considered as admission fee. Thus, Business TV is made available to health clubs or special interest clubs.)

349
Q

Service levels for Business TV Private View:

A

Business TV Basic

Business TV Information & Entertainment

Business TV Standard

Business TV Preferred

350
Q

Business customers are required to sign a ______________________ in order to establish service.

A

service order agreement/contract

351
Q

Service levels for Business TV Public View:

A 
Basic
Digital Basic Plus
Digital Standard
Digital Deluxe
Sports & Entertainment Standard
Sports & Entertainment Deluxe
352
Q

There are three major music licensing organizations which provide the rights for businesses to play licensed recordings:

A

ASCAP

BMI

SESAC

353
Q

Benefits of bundling

A 
Flexible
One service provider
Efficient
Cost effective
Peace of mind
354
Q

Most VoIP service providers use the _____________(Internet Phone) to carry phone traffic; Comcast does not.

A

public Internet

355
Q

Business Voice is transported over _____________________________, giving customers the clarity they expect.

A

Comcast’s private, advanced broadband network

356
Q

Business Voice Service Capabilities & Customer Support

A

Operator Assistance

Directory Assistance

Call Restrictions

E911 Emergency Calls

Do-Not-Call Registry

Directory Listings

357
Q

Features that are available only to Business customers:

A

Call Forward No Answer

Hunt Groups

Extension Dialing

358
Q

A serviceability check consist of two components:

A
  1. Serviceability of the location

2. E911 serviceability

359
Q

The demarcation point for Small Business Voice services is?

A

The RJ telephone connector on the back of the eMTA

360
Q

When installing Business Voice, always use a?

A

dedicated eMTA

The Ethernet port should not be used for Internet service

361
Q

___________ circuits can be noisy and more susceptible to migration and corrosion

A

Ground start

362
Q

_________circuits are almost always used in IP voice telephony

A

Loop start

363
Q

1 Baud equals ____, thus 9600 Baud is _______.

A

1 bps

9.6kbps

364
Q

Metro Ethernet (Metro-e) customers can select one of the three Classes of Service (CoS) that best meets their applications’ performance requirements:

A
  1. Basic
  2. Priority
  3. Premium
365
Q

What is the speed range for Metro-e?

A

1Mbps–10Gbps

366
Q

What website would you direct a customer to for anything business class related?

A

http://business.comcast.com/

367
Q

Business Internet Customer Support a technician can be dispatched within ______, including on weekends and holidays

A

4 hours

368
Q

Combines the functions of a cable modem and a router in a single device

A

IP gateway

369
Q

It is the process of modifying IP address information in IPv4 headers

A

NAT

370
Q

Some routers come with a ___________option which, when enabled, essentially disables the networking functionality and the gateway basically becomes a modem.

A

Bridge Mode

371
Q

Managed Internet access, available to corporations that have a distributed, mobile workforce of at least 100 persons

A

Teleworker Internet

372
Q

DOCSIS 1.0 issued

A

March 1997

373
Q

DOCSIS 1.1 added full standardization and quality of service capabilities

A

April 1999

374
Q

DOCSIS 2.0 released, to meet the demand for enhanced upstream transmission speeds

A

December 2001

375
Q

DOCSIS 3.0 released; it supported enhanced upstream and downstream transmission speeds and Internet Protocol version 6 (IPv6).

A

August 2006

376
Q

Aims to support capacities of at least 10Gbit/s downstream and 1Gbit/s upstream

A

DOCSIS 3.1

377
Q

All DOCISIS specifications currently support:

A

6 MHz wide downstream channels, modulated at 64 QAM or 256 QAM, with receive levels between -15 and +15 dBmv at the cable modem

378
Q

Upstream channels are __ MHz wide and depending on the DOCSIS version, support these upstream modulation schemes:

A

3 MHz

QPSK, 16 QAM, 32 QAM, and 64 QAM

379
Q

Transmit levels for QPSK are:

A

+8 to +58 dBmv

380
Q

Transmit levels for 64 QAM are:

A

+8 to +55 dBmv

381
Q

Comcast has allocated downstream DOCSIS carriers to be located in the higher end of the downstream bandwidth, somewhere between:

A

500 and 700 MHz

382
Q

DOCSIS supports frequencies anywhere between:

A

88 MHz and 860 MHz

383
Q

Upstream carriers are currently located somewhere between:

A

5 and 42 MHz

384
Q

Technology that allows multiple cable boxes to utilize a single radio channel. Each box is assigned a code for its upstream bit stream

A

S-CDMA: Synchronous - Code Division Multiple Access

385
Q

Load-sharing technique for logically combining

multiple DOCSIS channels

A

Channel Bonding

386
Q

Electromagnetic wave that generally falls in the frequency range of 3 kHz to 300 GHz

A

RF or Radio Frequency

387
Q

A protocol for assigning dynamic IP addresses to devices on a network

A

Dynamic Host Configuration Protocol (DHCP)

388
Q

The modem scans the downstream QAM channels, looking for an upstream channel descriptor. A __ occurs if the cable modem does not find one within a few seconds

A

T1

389
Q

The modem waits for an opportunity to communicate with the CMTS. If it does not get an opportunity within about 12 seconds, a __ timeout occurs.

A

T2

390
Q

The cable modem has sent a ranging request upstream to the CMTS for transmit and timing information. If the modem does not get a response within 200 milliseconds, a __ Timeout occurs. After 16 attempts, the modem will reboot to restart the registration process from the beginning.

A

T3

391
Q

Once a cable modem is online, it continues to communicate with the CMTS. The modem watches for Keep Alive requests from the CMTS. If it does not receive one after 30 seconds, a __ timeout occurs.

A

T4

392
Q

After __ T4s, the cable modem will reset

A

16

393
Q

T3 and T4 timeouts can be a sign of an

A

upstream or downstream problem

394
Q

A complex number with a resistive and reactive component. It is a function of the frequency of the applied signal, and is unrelated to length

A

Characteristic Impedance

395
Q

The condition that results when two components of a system are operating at a different impedance

A

Impedance Mismatch

396
Q

Performs a function similar to that of a cable amplifier’s equalizer. However, instead of equalizing the entire 50-860 MHz downstream or 5-42 MHz upstream, it deals with just a single channel.

A

Adaptive Equalization Technology

397
Q

A feature in Scout that shows the presence or absence of linear distortions in the RF portion of the return path

A

Scout Flux

398
Q

Cable modems communicate with the CMTS every _________ to characterize network conditions

A

20 seconds

399
Q

How do you access Scout Flux data for a single modem

A

Go to the Device Watch tab and select Customer Report

In the search box, you can enter an account number, phone number, MAC address, IP address, FQDN, or name for the customer.

After entering the information, click the Submit button

The customer report will look slightly different for various customers, due to the equipment on the account

Click on the CM1 page (if it shows up on your screen), and go to the Modem Toolbox at the bottom of the page

To open up Scout Flux, click on the Scout Flux icon - the sine wave

400
Q

To troubleshoot single premise issues in Scout Flux, you will need to concentrate on the ____________________________ graphs shown in the second row

A

In-Channel Frequency Response (ICFR)

401
Q

A measurement of how consistent the signal response is from the beginning to the end of the channel space

A

ICFR

402
Q

ICFR values, and what they indicate:
> 3.0 dB -
< 3.0 dB -
< 1.5 dB -

A
  • the problem should be investigated and fixed
  • required level to pass Techlink certification
  • ideal circumstances at the modem
403
Q

ICFR Ripple Count:
Fewer ripples would generally indicate a?

whereas numerous ripples would most llikely indicate a?

A

house problem

plant problem

404
Q

The adaptive equalizers are sent fresh commands for equalization every?

A

20 seconds

Jeopardy 2014 Tech (73 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions