2017CTJ CT3 Questions Flashcards
1
Q
AM radio frequency band
A
535 kHz to 1.7 MHz
2
Q
FM radio frequency band
A
88-108 MHz
3
Q
Short wave radio Frequency band
A
5.9 to26.1 MHz
4
Q
Garage door opener frequency
A
About 40 MHz
5
Q
Radio controlled airplane frequency
A
About 72 MHz
6
Q
Law Enforcement and Fire Rescue Frequency Band
A
150-155 MHz
7
Q
Air Traffic Control Radar Frequency Band
A
960-1215 MHz
8
Q
LTE FDD Frequency Bands
A
700, 800, 1700, 1900 MHz
9
Q
Wi-Fi- Frequency Bands
A
2.4 and 5.0 GHz
10
Q
At which Temperature is cable attenuation calculated?
A
68 degrees F
11
Q
A passive signal splitter with minimal loss between input and output ports, specified loss between input and tap ports, and very high loss between output and tap ports
A
Directional Coupler
12
Q
How Much signal would you need to gain/lose in order to double/half your signal strength?
A
3dB
13
Q
FDM
A
Frequency Division Multiplexing
14
Q
When multiple carriers oscillating at different frequencies are transported simultaneously in the same medium it is called what?
A
Frequency Division Multiplexing
15
Q
FCC part 76.614 states any leakage source exeeding _____ at a distance of _____in the aeronautical radio frequency bands shall be noted and repaired in a reasonable time
A
20 uV/m 3
16
Q
Comcast stanards state _____ is the maximum amount of signal leakage allowed at a customers premsie
A
10 uV/m
17
Q
DVR
A
Digital Video Recorder
18
Q
A suite of applications that enables customers to enjoy their Comcast services on as many platforms as possible
A
Converged Products
19
Q
Industry lead lead ny over 200 broadcasters, manufacturers, network operators etc. committed to design open technical standards for the delivery of digital tv
A
DVB Project
20
Q
Type of CableCARD that can only support one way services
A
Single stream or S-Cards
21
Q
Type of CableCARD that supports two way communication, allowing the use of premium channels (although ondemand and pay-per-view will still not be accessible)
A
Multi-Stream or M-Card
22
Q
DTA
A
Digital Transport Adapter
23
Q
DTA model which provides High Definition and will work on both the Cisco and Motorola plant
A
HD-uDTA
24
Q
Three main components of a Home Theater System
A
Audio, Video, Environment
25
Latent or out of sync audio is often called what?
Lip Sync
26
Single channel reproduction using only one speaker
Mono
27
Has two discrete channels and is mixed so that some sounds go to the left speaker and other go to the right
Stereo
28
This has multiple discrete audio channels that feed multiple speakers in order to surround the listener in sound
Surround Sound
29
Certification program for home theater equipment
THX
30
THX
Either Tom Holman's eXperiment or named after George Lucas's first movie THX 1138
31
Key elements of a surround sound system are
Preamplifier, Power Amplifier, Surround Sound Processor, Audio/Video Receiver
32
S-Video
Separated Video
33
SAP
Second Audio Program
34
Two fundamental stanards used to assess an HDTV system
Aspect Ratio and Scan Rates
35
Academy Aspect ratio
4;3
36
HDTV Aspect ratio
16;9
37
VistaVision (animated and European movies) Aspect ratio
1.66;1
38
VistaVision or Academy Flat (Most American Movies) Aspect ratio
1.85;1
39
CinemaScope (Epic Movies such as Star Wars) Aspect ratio
2.35;1
40
PanaVision (Ultra-widscreen format such as How the West was Won) Aspect Ratio
2.6;1
41
Ultra Panavision (Ultra-widescreen format such as Ben Hur) Aspect Ratio
2.76;1
42
Short for Picture Element
Pixel
43
Tiny dots that convey light and combine to form a video picture
Pixel
44
LCD
Liquid Crystal Display
45
The speed at which single unique pictures are displayed in seconds on a screen
Frame Rate
46
Visible fading of luminance between scan cycles on video displays
Flicker
47
EDTV
Enhanced Definition TeleVision (480p instead of 480i as in SDTV)
48
DLP
Digital Light Processing
49
LED
Light Emitting Diode
50
This type of TV employes a stereoscopic image technology, this gives the perception of a 3-D image
3D TV
51
The point at which the communication company's network ends and connects with the customers network
Demarcation Point
52
A problem most often described as a humming sound in the audio (rarely affects picture or display quality), generally cause by a 60 cycle AC component in the audio connection
Ground Loop
53
CPD
Common Path Distortion
54
A return path impairment characterized by a significant rise in the noise floor
CPD
55
Electromotive force that causes electrons to flow in a circuit
Voltage ?
56
The flow of electrons through a conductor measured in amperes and is determined by how many electrons pass a given point in one second
Current (I)
57
The opposition a material offers to the flow of electrical current
Resistance ?
58
What is Ohms Law?
Voltage=Current X Resistance or E=I X R
59
NAS
Network Attached Storage
60
A dedicated hard disk storage device that is setup with its own network address and provide file based storage to other devices on the network
NAS
61
A non-profit collaborative trade organization that defines a standard for moving digital media from one device to another in a home network
DLNA (Digital Living Network Alliance)
62
DLNA
Digital Living Network Alliance
63
A set of protocols that enable networked devices to automatically discover each other's presence
Universal Plug and Play
64
UPnP
Universal Plug and Play
65
QoS
Quality of Service
66
DQoS
Dynamic Quality of Service
67
With this service voice packets are given priority over other types of data traveling within the Comcast network
DQoS
68
What is ther correct amount of supervisory voltage?
42-48 VDC
69
What is the correct voltage of talk battery?
3-9 VDC
70
What is the correct amount of Ring Voltage?
60-90 VAC
71
What is the loop current on our Arris modem?
23-40 ma
72
When a telephone is on-hook, there is a potential difference of 48 volts (0VDC tip and -48VDC ring) between the tip and ring. This is called what?
Supervisory voltage
73
The DC voltage present in the circuit while the phone is off-hook is called what?
Talk Battery
74
This type of voltage in a phone system has a frequency of 20 Hz and follows a 2-4 pattern in North America for its standard ring cycle
Ring Voltage
75
Customers wishing to use old rotary dial telephones must request what capability be added to their XFINITY Voice account?
Pulse Dialing
76
How many hours of standby time does our eMTA battery provide?
Up to 8 hours
77
The maximum length of a silver satin cable should not exceed what length?
15 feet
78
what modular connector is used from a hamdset to a telephone? (no RJ designation)
4P4C
79
What modular connector is used from a telephone to a wall jack?
6P4C or RJ-14
80
What modular connector goes from a telephone to a wall jack when used with a fax machine?
6P2C or RJ-11
81
What is another name for a UR2 or a UR3 connector?
Scotchlok (UR2 for 2 wires and UR3 for 3 wires)
82
Keenness and depth of perception, discernment, or discrimination especially in practical matters
Acumen
83
The ability to make good judgements and quick decisions, typically in a particular domain
Business Acumen
84
What is the Comcast Credo?
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
85
Who were the founders of Comcast?
Ralph J. Roberts, Daniel Aaron and Julian Brodsky
86
What are Comcast's seven core values?
1. Quality 2. Flexibility 3. Ethics 4.Employee Focus 5. Enthusiasm 6. Diversity 7. Respect
87
SLA
Service Level Agreement
88
What are the two viewing types of Comcast's Business TV services?
Private and Public
89
What are the three major music licensing organizations which provide the rights for businesses to play licensed recordings?
1. ASCAP 2. BMI 3. SESAC
90
Following the operational metrics for business class troubleshooting calls how long should each call last?
15 minutes (12 for call and 3 for wrap up)
91
Following the operational metrics for business class troubleshooting calls how many calls should be resolved with the first call?
90%
92
Following the operational metrics for business class troubleshooting how long do we have to respond to 100% of e-mails received?
12 hours
93
POS
Point of Sale
94
ENS
Ethernet Network Service (In reference to Comcast's Metro-E)
95
MAN
Metropolitan Area Network
96
Enables customers to connect physically distributed locations across a Metropolitan Area Network as if they were all on the same LAN
ENS or Metro-E
97
NAT
Network Address Translation
98
This is a process of modifying IP address info in IPv4 headers, allowing multiple hosts on a private network to access the internet while using a single public IP address
NAT
99
When you disable the network functionality of a router it is said to be in_____
Bridge Mode
100
when was DOCSIS 1.0 issued?
March of 1997
101
When was DOCSIS 1.1 issued?
April of 1999
102
When was DOCSIS 2.0 released?
December of 2001
103
When was DOCSIS 3.0 released?
August of 2006
104
QPSK
Quadrature Phase Shit Keying
105
SCDMA
Synchronous Code Division Multiple Access
106
If a modem does not communicate with the CMTS for 12 seconds what happens?
A T2 Timeout occurs
107
If a modem does not have its ranging request answered by the CMTS within 200 milliseconds what happens?
A T3 Timeout occurs
108
If a modem does not receive a Keep Alive request from the CMTS aftter 30 seconds what happens?
A T4 Timeout occurs
109
AET
Adaptive Equalization Technology
110
Used in data transmission to compensate for certain in-channel impairments that degrade the quality of digital signals
Adaptive Equalization Technology
111
3GPP
3rd generation partnership project
112
AC
Alternating current
113
ADS
All Digital Simulcast
114
A/O
Additional Outlet
115
AP
Access Point
116
ASC
Advanced Services Center
117
A/V
Audiovisual
118
BD
Blu-Ray Disc
119
bps
bits per second
120
BRIS
Broadband Residential Services Installation Standard
121
CA
Certification Authority
122
CDVR
Cloud DVR
123
C/N
Carrier to Noise
124
CO
Central Office
125
DAC
Digital Access Controller
126
DC
Direct Current
127
DCR
Digital Cable Ready
128
DNCS
Digital Network Control System
129
DOI
Day of Install
130
DQI
Digital Quality Index
131
DSG
DOCSIS Set-top Gateway
132
DVI
Digital Visual Interface
133
EMI
Electromagnetic Interference
134
FEC
Forward Error Correction
135
FMC
Fixed-mobile Convergence
136
FPTV
Front Projection TV
137
FSVM
Frequency Selective Voltmeter
138
FTUE
First Time User Experience
139
GPS
Global Positioning System
140
HD-CRT
High Definition Cathode Ray Tube
141
HTIB
Home Theater In a Box
142
IA
Interconnection Agreement
143
IAD
Integrated Access Device
144
ICFR
In-Channel Frequencey Respone
145
IDC
Insulation Displacement Connector
146
IMS
IP Multimedia sub-system
147
iOS
iPhone Operating System
148
IVR
Interactive Voice Response
149
LCoS
Liquid Crystal on Silicone
150
LTE
Long-Term Evolution
151
MTTR
Mean Time To Repair
152
uV/m
microvolts per meter
153
NAU
Netork Adressable Unit
154
OCAP
Open Cable Application Platform
155
OOB
Out of Band
156
OSG
Operations Support Group
157
OWE
Online Welcome Experience
158
PACE
Providing Awesome Customer Experience
159
PBX
Private Branch Exchange
160
PIN
Personal Identification Number
161
POE
Point of Entry
162
POP3
Post Office Protocol 3
163
POST
Power on Self Test
164
PSAP
Public Sweep Access Point
165
RCA
Radio Corporation of America
166
RL
Return Loss
167
RNG
Real Next Generation
168
SDU
Single Dwelling Unit
169
SIP
Session Initiation Protocol
170
SKU
Stock Keeping Unit
171
SMD
Surface Mounted Device
172
SPI
Stateful Packet Inspection
173
STP
Shielded Twisted Pair
174
SVOD
Subscription Video On-Demand
175
TDM
Time Division Multiplexing
176
TP
Test Points
177
TRACE
Technical Reference and Customer Experience
178
UCD
Upstream Channel Descriptor
179
USB
Universal Serial Bus
180
UTP
Unshielded Twisted Pair
181
VCR
Video Cassette Rfecorder
182
VHF
Very High Frequency
183
VPN
Virtual Private Network
184
WFX
Workforce Express
185
XOC
eXcellence in Operations Centers
186
Call Hold activate code
*52
187
Terminal Make Busy activate/deactivate codes
*230/*231
188
Group Make Busy activate/deactivate codes
*232/*233
