2017 CTJ Traditional new hire questions Flashcards
1
Q
What method should be used when isolating the cause of a problem?
A
Divide and Conquer
2
Q
which two OSHA standards must our climbing belts and safety strapsmeet?
A
1910.268 and 1926.959
3
Q
What does RG stand for
A
Radio Guide
4
Q
Maximum distance of CAT 3
A
150 feet
5
Q
Caller ID Blocking activate/deactive codes
A
67/82
6
Q
Attached to protect and ensure that our drops/traps will not be tamered with by unauthorized persons
A
Security Sleeves/Shields
7
Q
used for pre-drilling in masonry or stucco
A
con-sert tool
8
Q
IP addresses assigned to a devices NIC and verify that the IP function is operating correctly
A
Loopback IP Addresses
9
Q
MoCA
A
Multimedia over Coax Alliance
10
Q
MAC
A
Media Access Control
11
Q
An IEEE standard which acts as a means of authenticating a user. Typically found in commercial environments, it verifies a username and password against a server’s database
A
802.1x
12
Q
Which CFR refers to Cable television service regulation (especially for signal leakage)
A
Title 47, Part 76
13
Q
Total REN should not exceed what?
A
5
14
Q
TNS
A
Plural Telephone Numbers
15
Q
Color used to designate potable water
A
Blue
16
Q
CLI
A
Cumulative Leakage Index
17
Q
CRT
A
Cathode Ray Tube
18
Q
The MPEG method splits the signal into what three types of encoded pictures?
A
I-pictures aka key frames, P-pictures aka predictive frames, and B-pictures aka bi-directional frames
19
Q
QAM
A
Quadrature Amplitude Modulation
20
Q
speed dial 30 activate code
A
*75
21
Q
WEP
A
Wired Equivalent Privacy
22
Q
Maximum distance of CAT 5
A
328 feet (100 meters)
23
Q
Worldwide network of public circuit-switches used by traditional, local, and long-distance companies
A
PSTN
24
Q
DTMF
A
Dual Tone Multi-Frequency
25
What impact rating should the toe of the boot meet?
I/75 C/75 (for nominal impact of 75 pounds)
26
what gauge wire is require for series 6 drops?
#12 AWG
27
DOCSIS
Data Over Cable Service Interface Specification
28
A removable security card available from cable TV providers.
CableCARD
29
what is one millivolt across a 75 ohm load (FCC mandated baseline)?
0dBmV
30
color used to designate sewers and drain lines
Green
31
What Year was Comcast founded?
1963
32
how much signal loss is there for series 6 cable per 100 feet at 54MHz? (Rule of Thumb)
2dB
33
minimum height requirement of our reflective safety cones
28"
34
Hard Hat ANSI Standard
Z89.1
35
A utility that traces a packet from your computer to an internet host
Traceroute
36
What does 60Hz cycle Hum look like?
one black horizontal bar progressing up the TV screen
37
Five factors which determine attenuation
1. Center condutir size 2. dielectric material 3.cable length 4.Temperature 5.Frequency
38
MUTCD
Manual on Uniform Traffic Control Devices
39
AM
Amplitude modulation
40
what are the two types of Volt Ohm Meters?
DMM (Digital Multi-meter) and Analog
41
Total loss equals
Cable loss + passive loss
42
BRIS requires clips be spaced every _____ to ______ horizontally
18 to 24 inches
43
The width of a band of frequencies
Bandwidth
44
Occurs when the drop cable crosses neighboring property lines
Cable trespass
45
WPA
Wi-Fi Protected Access
46
RDK
Reference Design Kit
47
collection of frames to be transmitted in one unit of time is called what?
a picture group
48
Enhanced voicemail code
*99
49
Type of encryption using TKIP or AES, users must supply a plain text password 8-63 characters long
WPA
50
Plenum cable for use in environmental air spaces such as ducts
CATVP
51
Riser cable for vertical runs in a shaft or floor-to-floor in MDUs
CATVR
52
NIC
Network Interface Card
53
What is the max range for Public IP Addresses?
224.x.x.x
54
Call screening activate/deactivate codes
*60/*80
55
BER
Bit error rate
56
P2P
Point to point
57
How many inch/lbs of torque is our torque wrench set to?
20 inch/lbs
58
SCTE
Society of Cable Telecommunications Engineers
59
Series cable used for long drops
RG 11
60
Bending radius of series 6 cable
2.5" (5" diameter)
61
What was the name of Comcat's original company?
American Cable Systems
62
What class safety vest does Comcast use?
Class 3 high visibility
63
A computer that handles a request data, file transfers, and other network services from other computers
Server
64
Standard 8 pin connector used to network computers,routers etc. over an ethernet connection
RJ-45
65
The FCC superseded which other agency?
Federal Radio Commission
66
our minimum clearance from other telecomm at the house
6 in.
67
These IP addresses can be reserved by an administrator and can then be used by the DHCP to assign a device its same address
Reserved
68
Provides the means to bond the drop cable to the house common electrode system
Bond Block
69
What is the max speed of 802.11ac?
1.3 Gbps
70
National standard for the safe installation of electrical wiring and equipment
National Electric Code NEC
71
Difference between transmitted and received power resulting from signal loss, usually expressed in decibels
Attenuation
72
GUI
Graphical User Interface
73
A site where telco companies physically interconnect their systems with other networks
POP
74
What does 120Hz cycle Hum look like?
two black horizontal bars progressing up TV screen
75
How many bits are in one Byte?
8
76
Bending radius of series 11 cable
4.5" (9" diameter)
77
When is it allowed to drill from inside the home to the outside?
when drilling through a wood exterior
78
Expected signal level equals
Starting signal level-total loss
79
The leading standard for cable modems
DOCSIS
80
CATV
Community Antenna Television, sometimes also refered to as Community Access Television
81
BRIS
Broadband Residential Installation Specification
82
Ratio between two signal power levels
Decibel dB
83
Series cable used in MDUs
QR 320
84
CFR
Code of Federal Regulations
85
Call waiting deavtivate code
*70
86
NPAC
Number Portability Administration Center
87
what does modem stand for?
modulate/demodulate
88
color used to designate irrigation
Purple
89
our minimum clearance from other telecomm at the pole
12 in.
90
electromagnetic signal above the audio and below the infrared frequencies
Radio Frequency
91
What is he maximum nymber of splices allowed in an underground drop of more than 60'?
2
92
One of 13 servers that serve a DNS root zone
Root Server
93
eMTA
Embedded Multimedia Terminal Adapter
94
what is the most common dielectric material?
Polyethylene foam
95
Absolute signal power that describes the signal at a specific location
Decibel millivolt dBmV
96
DNS
Domain Name Service
97
Our minimum clearance over residential driveways not subject to truck traffic, or where structure does not allow us to meet higher requirement
11.5 feet
98
NEC article for Communications curcuits
Article 800
99
A method for encrypting a network with a shared key, the key is 10-26 hexadecimal characters long
WEP
100
How do you calculate an NPS score?
% of promoters-% of detractors
101
A test instrument used to measure AC and DC voltage, current, and resistance in ohms
Volt Ohm Meter
102
POP
Point of Presence
103
This allows the alarm panel to control access to active phone pairs, and seize those pairs even if the customer is using the telephone
Line Seizure
104
MER
Modulation error ratio
105
Most commonly deployed network communications protocol in the world today
IPv4
106
how high should your boot be from the top of the heel?
6" minimum
107
Name bonding options in order from most to least preferred
1a #6 AWG solid copper stub 1b. Sturcture's grounding bridge 2. power company's grounding conductor (wire) 3. power company's grounding electrode (ground rod) 4. metallic conduit of power meter 5.metallic cabinet of power meter 6. interior metal cold water pipe (if conditions are met) also bonus bond to I beamof mobile home if power service equipment is within 30 feet of mobile home. another option is bonding at the tap if tap and power pedestals are next to each other and within 30 feet of the home (least prefered option and #6 AWG required)
108
Call forwarding Selective activate/deactivate codes
*63/*83
109
A set of rules governing the format of messages exchanged between computer and people
protocol
110
WDM
Wavelength Division Multiplexing
111
Color used to designate gas, oil, steam, and petroleum
Yellow
112
maximum distance of CAT 1
15 feet
113
our minimum clearance from power at the home
12 in.
114
Characteristic of RF propagation in a cable in which the higher frequiencies tend to travel along the surface of the conductor rather tha throughout its mass
Skin Effect
115
Which color in a component video signal carries the Luminance?
Green
116
in what year did Comcast begin receiving programming by satellite?
1975 (HBO)
117
VoIP
Voice over Internet Protocol
118
REN
Ringer Equivalence Number
119
what are the four key components of Comcast's cable network?
1. Headend 2. Transportation system 3. Distribution system 4. Drop system
120
Right to use another person's real estate for a specific purpose, a common type is known as right of way
Easement
121
HDCP
High-bandwidth Digital Content Protection
122
our minimum clearance over residential driveways subject to truck traffic
15.5 feet
123
CMTS
Cable Modem Termination System
124
Type of encryption that uses TKIP or AES and requires a general passphrase that is 8-63 characers in length
WPA2
125
RJ
Registered Jack
126
PSTN
Public Switched Telephone Network
127
What type of cable is limited to installations in buildings in which the exposed length of cable does not exceed 10 feet?
CATVX
128
NEC article for coax cable distribution
Article 820
129
This U.S. government agency regulates electronic communications
FCC
130
Category3 cable speed as defined by the EIA/TIA
10 Mbps
131
NTIA
National Telecommunications and Information Administration
132
ILEC
Incumbent Local Exchange Carrier
133
This collects signals from a variety of sources and directs them to the headend.
DCRF (Dry Creek Road Facility)
134
F-81
Barrel connector
135
BRIS requires clips be spaced every _____ to _____ vertically
30 to 36 inches
136
A unique physical address that all devices that rely on computer network connections have. Written as 12 hexadecimal digits separated by colons or dashes
MAC address
137
AWG
American Wire Gauge
138
Strand that connects the pole line hardware to the anchor
Guy
139
Ratio of signal power to the noise power and is expressed in dB
SNR signal to noise ratio
140
Our minimum clearance over roads, streets, alleys, nonresidential driveways, parking lots, and other areas subject to truck traffic
18 feet
141
our minimum distance above sidewlaks or other pedestrian traffic areas
10 feet
142
distance between two consecutive peaks or troughs in a waveform
Wavelength
143
How many pins are in an HDMI connection?
19
144
MPEG
Moving Picture Experts Group
145
A steel support wire to which the coax or fiber optic cable is lashed in an aerial installation
Strand
146
Transmission of data in only one direction at a time
Half duplex
147
LAN
Local Area Network
148
Specification developed for protecting digital entertainment content that travels over HDMI
HDCP
149
Process of converting data into a coded form to prevent it from being read and understood by an unauthorized party
Encryption
150
A group of computers and devices that share a common communication line within a small geographic area
LAN
151
What is the FCC limit for signal leakage at a distance of 30 meters for 0-54 MHZ and above 216 MHz?
15 uV/m
152
Three types of IP assignment
1.Dynamic 2. Static 3. Reserved
153
Call forwarding variable activate/deactivate codes
*72/*73
154
This connects to a coax cable and uses a special lens to focus light into a fiber optic cable
LASER/optical Transmitter
155
What is the max speed of 802.11g?
54 Mbps
156
What is the max speed of 802.11n?
600 Mbps
157
what distance should we maintain between multiple holes>
1 1/2 in.
158
Inwhat year did Comcast begin using two-way communication in order to authorize pay-paer-view events?
1974
159
Condition that results when two components of the same system are operating at a different imperdance
Impedance Mismatch
160
FCC
Federal Communications Commission
161
What is the maximum number of splices allowed in an underground drop of less tha 60'?
1
162
How high should your boot's heel be at time of purchase/when does it need replaced?
3/4" and 1/2"
163
A raceway of circular cross-section through which cables can be pulled
Conduit
164
repeat dialing activate/deactivate codes
*66/*86
165
condition caused when packets are not received in the correct order or they take too long to reach their destination
Jitter
166
FM
Frequency modulation
167
POTS
Plain Old Telephone Service
168
bits per second equal
bit rate
169
In what year was the FCC established?
1934
170
Used for measuring signal leakage
signal leakage detector
171
Our minimum clearance from power at the midspan
24 in.
172
Refers to a technology that allows the fast transfer of digital information (FCC minimum 200 Kbps) in two directions
broadband
173
Name the 10 Xfinity Mobile Apps
1.Xfinity Stream 2. Xfinity My Account 3. Xfinity WiFi Hotspots 4. Xfinity Xfi 5. Xfinity Home 6. Xfinity Connect 7. Xfinity TV Remote 8. Xfinity Mobile 9. Xfinity Mobile Voicemail 10. X1 Phtos by Comcast Labs
174
DWDM
Dense Wavelength Division Multiplexing
175
What is the max speed of 802.11b?
11 Mbps
176
Category 6 cable speed as defined by the EIA/TIA
10 Gbps
177
Comcast's MoCA frequency band
1150-1650 MHz
178
Last call return code
*69
179
Rate of errored bits compared to total number of bits received in one second of time
BER
180
WPA2
Wi-Fi Protected Access Version 2
181
What is the FCC limit for signal leakage at a distance of 3 meters from 54-216 MHz?
10 uV/m
182
old standard for cable (may still be found in older installations today)
RG 59
183
What are the CARES Pillars?
Customer Viewpoint, Automated Support, Reliability, Employee Empowerment, Simplification
184
New series cable used in most homes
RG 6
185
Used for hosts/computers that have requested an IP but have not been assigned one after a certain amount of time. Indicates a problem of some sort
Automatic Private IP Addresses
186
NID
Network Interface Device
187
SLM
Signal Level Meter
188
what is series 6 return loss per 100 feet? (Rule of thumb)
1 dB
189
Family of standards for coding audio-visual information such as movies, video, and music
MPEG
190
Bit
Binary Digit
191
IIRV
Identify, Isolate, Repair, and Verify
192
Attached to the cable system to prevent reception of certain frequiencies
Traps/filters
193
CLEC
Competitive Local Exchange Carrier
194
Insulating material seperating two conductors, such as that between the center conductor and sheath of a coax cable
Dielectric
195
These IP addresses are entered manually by an administrator or user and do not use the DHCP server
Static IP Addresses
196
The resistance of a curcuit to alternating current
Impedance
197
CAE
Customer Account Executive
198
XRE
Cross Platform Runtime Environment
199
Used to provide fall protection when working from an aerial lift/ buckket truck
Body Harness
200
Which cable has a fire-retardant jacket because it is part of the air distribution system, which requires a higher fire rating?
Plenum
201
SPDIF
Sony/Philips Digital Interconnect Format
202
A mandate by the FCC which requires cable operators only deploy set top boxes that have a PC card slot for a multichannel CableCARD to decrypt signals
Seperable Security
203
The newest version of the IP protocol, it uses expanded features and addressing to overcome the older standard
IPv6
204
MDU
Multiple Dwelling Unit
205
Random, flucuating signals on a network that are not part of the channels audio/video or data carriers
Noise
206
LASER
Light Amplification by the Stimulated Emission of Radiation
207
How much signal loss is there for series 6 cable per 100 feet at 750 MHz? (Rule of Thumb)
6dB
208
A utility to determine whether a specific IP address is accessable, it sends packets and waits for a reply
Ping
209
What material is used for the outer jacket in standard coax cable?
PVC (PolyVinyl Chloride)
210
Category 5 cable speed as defined by the EIA/TIA
10 & 100 Mbps
211
A select range of IP addresses reserved for internal network usage. Cannot be used on the public internet
Private IP addresses
212
HFC
Hybrid Fiber-Coax
213
Which type and rating must our hard hats be?
Type I or II with an E rating
214
substance that allows heat or electricity to pass through it
Conductor
215
transmission techniques that manage the delivery of voice using IP packets
VoIP
216
Loop intentionally formed in the cable to compensate for expansion and cantraction caused by temperature changes
Expansion Loop
217
Amplitude distortion of a signal caused by the modulation of the signal by components of the power line frequency
Hum
218
Used to identifiy location and severity of hidden faults in a cable line
TDR (Time Domain Reflectometer)
219
What is the ANSI standard for our safety glasses?
Z87.1-2003
220
what is the maximum size hole we should drill?
3/4 in.
221
In what year did comcast add out of the home television viewing over the internet and mobile devices?
2007
222
Comcast's return (upstream) path
5-42 MHZ
223
Any technology used to protect the interests of owners of content and services
DRM Digital Rights Management
224
A range of wavelengths of electromagnetic emission
spectrum
225
Maximum distance of CAT 6
328 feet (100 meters)
226
Which three elements characterize RF signal?
wavelength, frequency, and amplitude
227
A commcand line that displays the IP address, subnet mast, and default gateway for all adapters
Ipconfig
228
What is the electrical hazard rating for our boots?
EH
229
These span and connect multiple LANs together
WAN
230
Our minimum clearance from power at the pole
40 in.
231
differnece between a signals maximum or minimum value during one cycle (measured in volts)
Amplitude
232
Category 5e cable speed as defined by the EIA and TIA
100 & 1000 Mbps
233
speed dial 8 activate code
*74
234
what is the minimum gauntlet length for leather faced climbing gloves?
4"
235
translates domain names into IP addresses
DNS
236
Anonymous Call Rejection activate/deactivate codes
*77/*87
237
color used to designate communication
Orange
238
Color used to designate Electrical power
Red
239
Name the four types of IP addresses
1. Private 2. Loopback 3. Automatic Private 4. Public
240
Adapter that allows a customer to use their electrical system as a transmission path for the home network
HomePlug
241
our minimum clearance from other telecomm at the midspan
6 in.
242
DHCP
Dynamic Host Configuration Protocol
243
A curcuit board or card that is installed in a device so that it can be connected to a network
NIC Network Interface Card
244
What material is used for the outer jacket in underground drop cable?
Polyethylene
245
The IEEE created which standards for use of radio signals over specified frequencies to transmit data?
802.11
246
What is the weight rating of 1A ladders?
300 lbs
247
A type of cable which contains two conductors and which share the same axis
Coax cable
248
Cable loss equals
Footage X Cable loss per foot
249
HDMI
High Definition Multimedia Interface
250
what size hole should be drilled for a single cable?
3/8 in.
251
Comcat's Forward (downstream) path
54-1002 MHZ
252
Wall plates should be at least how far from an electrical outlet?
6 in.
253
A list of channel numbers and their associated stations for a particular headend
Channel Map
254
What is the max speed of 802.11a?
54 Mbps
255
Our minimum clearance above roofs not accessable to pedestrians
3 feet
256
What is the weight rating of 1AA ladders?
375 lbs
257
APIPA
Automatic Private IP Address
258
call trace code
*57
259
what is the key difference between MPEG-2 and MPEG-4?
Distance between the key frames (I-pictures)
260
what gauge wire is required for series 11 or QR 320 drops?
#6 AWG
261
This isolates the alarm panel from the gateway in the telephone circuit
RJ31X
262
the number of times a signal goes through a complete cycle in one second (measured in Hertz)
Frequency
263
LRN
Local Routing Number
264
What material is used for the outer jacket in plenum cable?
Teflon
265
Delay associated with inconsistencies, or impairments in the data transport system
Latency
266
NPS
Net Promoter System and Score
267
NEC article for general requirements for grounding
Article 250
268
Where was Comcast's first system built?
Tupelo, Mississippi
269
Our minimum clearance above a flat roof
10.5 feet
270
a coax cable consists of which four parts?
1. center conductor (copper clad steel) 2. dielectric 3.Braid/foil shield 4. outer jacket
271
WAN
Wide Area Network
272
NEC
Nation Electric Code
