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TurtlePower 22-23 > Thinking too hard > Flashcards

Thinking too hard Flashcards

1
Q

Size of SD Card for Time shift buffer in XG2

A

32 GB

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2
Q

This must be used for all underground drops on a customer’s property

A

The shortest route possible

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3
Q

Two pieces of hardware installed in drop system for security

A

Traps/Filters
Security Sleeves/Shields

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4
Q

All underground drops must meet requirements of this NEC

A

Article 820

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5
Q

Network interfaces are identified by using this unique number, known as this

A

Media Access Control (MAC)

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6
Q

Standard 8-pin connector used to network computers, routers, printers and or game consoles over an ethernet connection

A

RJ 45
8P8C

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7
Q

This makes contacting computers and devices easier by converting web addresses to IP Addresses

A

Domain Name Server

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8
Q

This system starts at the tap and terminates at customer equipment

A

Drop System

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9
Q

System of error control for data transmission, where the tra

A

Forward Error Correction

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10
Q

This is used to connect multipule outlets in the home

A

Splitters

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11
Q

Pre-dates Hybrid Fiber-Coax

A

Tree and branch

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12
Q

Digital compression refers to reducing the number of bits re

A

Redundant bits in the data

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13
Q

Top 5 connector problems

A

Moisture damage
Center conductor left to long or short
Connector was not tightened properly
Braid was removed, left long or short
Wrong connector used for cable type

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14
Q

When modulated signal reaches the destination point this happens

A

Demodulation

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15
Q

Allows signals to and from the customer in this part of the

A

Fiber Node

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16
Q

Degradation in analog transmission affects this

A

Fine detail in picture quality

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17
Q

X1box not capable of RF pairing

A

RNG150N

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18
Q

Do not touch andy bonding devices without first testing them

A

Foreign Voltage Detector (FVD)

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19
Q

Distance between two consecutive peaks or troughs of a wavef

A

Wavelength

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20
Q

The unwanted alteration of the original shape of a signal, u

A

Signal distortion

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21
Q

Inside the headend, RF signals from many sources are combine

A

A fiber optic transmitter

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22
Q

Type of user interface that allows users to interact with el

A

Graphical User Interface

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23
Q

Most common dielectric material

A

Polyethylene Foam

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24
Q

Ensure that the customer understands and is comfortable with

A

The bond block

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25
Q

Determined by comparing the ratio to one millivolt

A

Decibel millivolt (dBmV)

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26
Q

A computer circuit board or card that is installed in a comp

A

NIC

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27
Q

This must be used if the pedestal is on an adjoining propert

A

Rear easement

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28
Q

Any technology used to protect the interests of owners of co

A

DRM

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29
Q

Platform method that uses linear programming

A

QAM

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30
Q

The X1 Platform incorporates what cable modem IP interface,

A

DOCSIS

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31
Q

Data sent through a switch is ______ meaning it can send and

A

Full-duplex

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32
Q

Radio frequency spectrum

A

3kHz-300GHz

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33
Q

The recognition of a user as having a valid account on the s

A

Authentication

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34
Q

A utility that traces a packet from your computer to an inte

A

Traceroute

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35
Q

The rate of errored bits compared to the total number of bit

A

BER

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36
Q

Early television tuners consisted of a drum made up of 12 se

A

potentiometer

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37
Q

Uses a yellow cded RCA Cable for video, connects a single vi

A

Composite video cable

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38
Q

According to regulations CLI must routinely monitored with t

A

Ground based or aerial flyover

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39
Q

Splits the signal into left (white) and right (red) audio. C

A

Standard RCA stereo cable (composite audio cable)

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40
Q

Provides the means to bond the drop cable to the house commo

A

Bond Block

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41
Q

Select range of Ip addresses reserved for internal network u

A

Private IP Address

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42
Q

All outside drop cables must be

A

Series 6 or greater

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43
Q

This simplifies network administration because the software

A

Dynamic addressing

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44
Q

This checks the signal being transmitted and makes sure that

A

Modulation Error Ratio (MER)

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45
Q

Filters that block achannel or channels from being received

A

Negative trap

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46
Q

This effectively reduces the bandwidth required to transmit

A

Digital compression

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47
Q

13 authoritative servers that can identify and translate any

A

Root Servers

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48
Q

This exists between the DSG agent in the CMTS and the DSG client in the set top device

A

DSG tunnel

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49
Q

These are used for hosts or computers that have requested an IP address but not have been asigned one after a certain amount of time

A

Automatic Private IP Addresses

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50
Q

Responsible for receiving and processing signals and sending the signals over the network to customers, or in some cases other headends.

A

The Headend

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51
Q

Low frequency electromagnetic interference that affects customers service

A

Hum

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52
Q

Encoding a signal is an advantage of digital signal over analog. This is done by what

A

Digital compression

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53
Q

Attaching a drop at the house a tech should

A

Locate the house attachment in an area on the same side as powerPlace the house attachment near electrical service/meter base for accessible bonding point

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54
Q

The basic example of a signal that can be generated, transmitted, and received with RF equipment

A

Sine wave

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55
Q

120 Hz cycle displays as

A

2 black horizontal bars progressing up the TV

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56
Q

This contains full range of frequencies from radio waves and microwaves through visible light, X-rays, and gamma rays

A

Spectrum

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57
Q

Use this to check for unsafe voltage on the bonding block

A

Single-contact-point FVD

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58
Q

Also known as patch cables

A

Straight cables

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59
Q

Remove an interfering carrier from a channel that a customer wants to receive

A

Positive trap

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60
Q

This method, which is to be avoided, is replacing everything and hoping that it fixes the problem because it is not an effective method of troubleshooting

A

Shotgun method

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61
Q

Amplifiers must only be installed here

A

Primary service distribution point

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62
Q

Tv signals from distant transmitters would be

A

Received by antennas on a hilltop near a community

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63
Q

19 pin compact audio/video interface that transmits uncompressed digital data. Standard for interfacing home theater components

A

High Definition Multimedia Interface (HDMI)

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64
Q

Cable that looks like an ordinary twisted pair cable, but with two pairs of wires crossed, making the cable capable of directly connecting two computers without using additional equipment

A

Crossover Cable

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65
Q

When isolating the cause of a symptom what two steps do you follow

A

Perform a check on the equipment, Test the easiest first, eliminating possibilities quickly.If the issue is still present, move on to more time-consuming things.

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66
Q

Checking for continuity you make sure the coax ground and the screwdriver-in-the-dirt ground are common, measure the _____ between them

A

Resistance

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67
Q

Difference between transmitted and received power resulting in loss through all devices

A

Attenuation

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68
Q

This modulates the amplitude of two incoming carrier waves into one carrier wave

A

Quadrature Amplitude Modulation

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69
Q

Method of encrypting the network by using a pre-shared key. The key is 10-26 hexadecimal characters long

A

Wired Equivalent Privacy

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70
Q

The optical fiber terminates

A

At the fiber optic node

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71
Q

Are used for routing or splitting signals. A passive device do not require power to operate, has no gain but adds attenuation in the signal path.

A

Passive Devices (Splitters and Directional Couplers)

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72
Q

A removeable security card available from cable tv providers

A

CableCARD

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73
Q

Analog waveforms have this number of amplitude variations

A

Infinite

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74
Q

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

A

Ingress

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75
Q

Pipe is used to house cables to protect them from dirt and other elements and is made from flexible metallic or non-metallic raceway

A

Conduit

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76
Q

A very common method of networking computers in a LAN and can be used with almost any kind of computer

A

Ethernet

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77
Q

The process of converting data into a coded form to prevent it from being read and understood by an unauthorized party

A

Encryption

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78
Q

The branches of the distribution system that carry both downstream and upstream signals

A

Coaxial Hardline Cables

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79
Q

Provide alternating current (AC) power to active devices, converting the power company line voltage

A

Power Supplies

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80
Q

Typically connect to the distributing equipment to the computer. Named as such because one end corresponds directly with the other and the ends are identical

A

Straight cables

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81
Q

The number of times a signal goes through a complete cycle

A

Frequency

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82
Q

Found it both residential and commercial environments, used to communicate internally or to access the internet

A

LAN

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83
Q

Capable of catching “bursty” noises and must always be measured with MER

A

BER

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84
Q

Used to compare the level of a desired signal to the level of background noise

A

SNR

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85
Q

Attached at the tap or in the house to prevent reception of certain frequencies

A

Traps/Filters

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86
Q

A computer that handles requests for data, email, file transfers and other network services from other computers

A

Servers

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87
Q

Carries the two video signals on a single cable, with 4-pin or 7-pin mini-din connectors. Cannot handle the high definition signals used by hdmi

A

S-video cable

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88
Q

Ip addresses set by the DHCP server for particular devices

A

Reserved IP Addresses

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89
Q

A mandate by the Federal Communications Commission which requires cable operators only deploy digital set-top boxes that have a PC card slot for a multichannel CableCARD, to decrypt channels

A

Separable security

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90
Q

Connects Comcast customers to the local telephone company’s network

A

The Headend

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91
Q

This must be placed on all grounding conductors at the point of attachment to the primary power grounding system

A

A do not remove tag

92
Q

Signal strength or intensity measured in volts

A

Amplitude

93
Q

When drilling near a power outlet never do this

A

Drill in the horizontal or vertical plane

94
Q

Passage of signal intended to remain within the cable into the outside world; can result in a weaker signal at the end of the cable and radio frequency interference to nearby devices

A

Egress

95
Q

Turning a computer/device on from a powered down state

A

Cold boot

96
Q

Can be measured with a digital signal meter

A

dBmV

97
Q

The process of converting data into coded form (cypertext) to prevent it from being read and understood by an unauthorized party

A

Encryption

98
Q

Signal security is achieved through

A

Encryption or scrambling, which rearranges the content of a signal in such a fashion that it cannot be easily decoded by those not authorized to receive such transmissions

99
Q

Term for one character stored or processed by a computer, composed of bits, usually 8 bits per

A

Byte

100
Q

Connected to coax, the rf energy is used to modulate the LASER emission. Uses special lenses to focus light into the fiber optic cable.

A

Laser/Optical Transmitter

101
Q

Allows access to any client or user without any authorization

A

Open network

102
Q

The node converts light energy back to

A

RF energy

103
Q

Electromagnetic spectrum range

A

3Hz up through light

104
Q

Set of rules governing the format of messages exchanged between computers and people

A

Protocol

105
Q

These are manually entered by and administrator or user, they are used for devices inwhich the network or users depend on having the same address all of the time

A

Static IP addresses

106
Q

A utility to determine whether a specific IP address is accessible, it sends a packet to the specified address and waits for a reply

A

Ping

107
Q

Defines the net bit rate, channel capacity, or the maximum throughput of a logical or physical communication path in a digital communication system

A

Bandwidth

108
Q

The electronic signal modulates light to create

A

An optical carrier which is then coupled to an optical fiber

109
Q

Active devices used to offset losses of long drops and splitters within the interior drop system

A

House Amplifiers

110
Q

Determine if the original problem is solved and verify that new problems have not been intorduced

A

Verify

111
Q

Random, fluctuating signal on the network which is not part of a channel’s audio/video or data carrier

A

Noise

112
Q

A device that needs power to operate

A

Active Device

113
Q

The cumulative and significant interference from homes that funnels together on the return path

A

Ingress

114
Q

This is the equivalent of the device mailing address for your home

A

Private IP Address

115
Q

Absolute signal level at a specific location

A

Decibel millivolt (dBmV)

116
Q

Used to denote signal-to-noise ratio and cable loss

A

Decibel (dB)

117
Q

Provides the conversion from the fiber optic cable to the coaxial cable, in addition converts RF to optical in the return signal

A

Fiber Node

118
Q

Used in the coaxial part of networks to boost signals

A

Amplifiers

119
Q

This tuner allows cable subscribers to tune in unscrambled cable channels without a separate set-top box, including high-definition channels, if the cable service provider offers them.

A

QAM Tuner

120
Q

Ip addresses assigned to the devices NIC used to verify that the IP function is operating correctly on the device

A

Loopback IP address

121
Q

Can connect multiple devices to a single LAN, has an internal memory, map a device MAC address to a physical port on the device

A

Switch

122
Q

If the CA status says not ready then what is wrong

A

Card authorization or paring issue

123
Q

The step-by-step process to determine the exact cause and location of the problem

A

Isolate

124
Q

Changing the characteristics of a wave

A

Modulation

125
Q

A specification developed for protecting digital entertainment content that uses the DVI-D interface

A

HDCP

126
Q

Common security and authentication options

A

OpenWired Equivalent Privacy (WEP)Wi-fi Protected access (WPA)Wi-fi Protected Access version 2 (WPA2)802.1x

127
Q

Uses both fiber optic cables and coaxial cables to transport signals between the headend and equipment in the customers home

A

HFC

128
Q

Flooded cable should never be used in the customers home why

A

The compound could leak out and cause damage to customer’s property

129
Q

Speed and connection ability of a wireless network are effected by

A

Electromagnetic interferenceBuilding constructionElectronic devices in the same frequency rangeDistanceNumber of devices connected to the network

130
Q

The node transform light energy from

A

Optical cable to RF or electrical energy on the coaxial output

131
Q

Transmission of date in only oe direction at a time

A

Half-duplex

132
Q

The ability to alter the channel line up to better fit customer’s needs

A

Channel mapping

133
Q

Serves as a gateway to both the public internet and Comcast’s own managed nationwide network

A

The Headend

134
Q

Popular technology that allows an electronic device to exchange data wirelessly

A

Wi-Fi

135
Q

Refers to only loss or gain, not actual signal measurement

A

Decibel (dB)

136
Q

This device sends data between two or more networks

A

Router

137
Q

This is expressed in dB and can have a great impact on the signal strength. Several causes of this are frequency, temperature, dielectric used, center conductor diameter and cable length

A

Attenuation

138
Q

This develops specifications for home networking over in-home coaxial cable, which is commonly used for antenna connections to TVs and radios, and cable TV.

A

MoCA

139
Q

Used to express passive loss and amplifier gain

A

dB

140
Q

Footage times cable loss per foot

A

Cable loss

141
Q

Test that can verify that external signals are not entering through an impairment in the drop system and interrupting the service in some way

A

Ingress Test

142
Q

Space occupied by one complete cycle of a wave

A

Wavelength

143
Q

The process used to identify the cause of a problem A form of problem-solving A systematic and logical approach to locate the root cause of a problem</p>

A

Troubleshooting

144
Q

Digital signal can be reproduced as long as the receiver can _______

A

Recognize the binary bits

145
Q

Most video game system ports have _______ audio and video ports

A

Separate

146
Q

Installed in the feeder lines. Provides a connection point for customers drops to hardline coaxial cable

A

Taps

147
Q

Device can have a different IP address every time it connects to the network.

A

Dynamic IP

148
Q

Written as 12 hexadecimal digits seperated by colons or dashes

A

MAC Address

149
Q

The transmission of this is the first use of RF signals

A

Morse code

150
Q

Combination of two or more computers or devices that share information and communicate through various topologies

A

Network

151
Q

A command line that tdisplays the IP address, subnet mask, and default gateway for all adapters

A

Ipconfig

152
Q

Telephone’s signal strength was measured in

A

Bels

153
Q

Devices that have a router, switch, and access point merged inot a single device

A

Integrated devices

154
Q

The ability to share resources and high-speed internet access across all computers connected within the home

A

Home Networking

155
Q

Manages computer hardware resources and provides common services for computer programs

A

Operating System

156
Q

This is used to view the system, event and firewall logs to troubleshoot issues and to identify potential security risks

A

Access logs

157
Q

A _____ ____ is a device that is attached to the strandfrom which a drop can be hung</p>

A

Span clamp

158
Q

A means of transporting signals from one point to another using 22 or 24 AWG, 100 ohm copper wiring, typically Cat 5 or Ca 6 rated. Extremely effective at transmitting data at different rates

A

Twisted Pair cabling

159
Q

A dB, which is one-tenth of this Bel, was used to measure what

A

Signal strength by the telephone industry

160
Q

Leading standard for cable modems

A

DOCSIS

161
Q

A digital modulation method in which the value of a symbol consisting of multiple bits is represented by amplitude and phase states of a carrier

A

QAM

162
Q

A test instrument used to measure AC and DC voltage, current, and resistance in ohms</p>

A

Volt Ohm Meter (VOM)

163
Q

Noise is measured by

A

Signal to Noise ratio

164
Q

Pedestals must always be

A

Closed and locked

165
Q

This determines the impedance of cable

A

The density of the dielectric material

166
Q

Signals are converted to data and data to cable signals in this device

A

Cable Modem

167
Q

Degradation of a signal quality my occur due to these two things

A

Ingress or Egress

168
Q

Potential to cause harmful interference with aeronautical navigation systems

A

Egress

169
Q

Provides signal to the customers individual component outlets

A

Interior Coaxial Cable

170
Q

Any numbers outside the range of Private IP addresses, used across the public internet that is visible to other networks and devices

A

Public IP Addresses

171
Q

Resistance of a circuit to alternating current, measured in ohms

A

Impedance

172
Q

A mechanical device that is fitted onto coax to allow a connection to the tap

A

F-connector

173
Q

Higher frequency of signal the ____ the wavelength

A

Shorter

174
Q

This is responsible for receiving and processing signals and then sending those signals over the Comcast network to customers or other ______

A

Headends

175
Q

Checking for unsafe voltage at the cable NID make sure to find ______ _____ such as the metal shaft of a ________ stuck into the earth

A

Another ground Screwdriver

176
Q

When opening the pedestal watch out for

A

Snakes Spiders Wasps and bees Rodents

177
Q

Encoding digital cable channels is done by this

A

Quadrature Amplitude Modulation

178
Q

Connects devices in the customers home or business to the distribution

A

Drop cable

179
Q

This is the difference between a signal maximum and minimum value during one cycle

A

Amplitude

180
Q

Comcast network is designed as a:

A

Closed system

181
Q

Used to express an absolute signal level

A

dBmV

182
Q

Carries signals to and from the node through the hardline coaxial cable to communities for connection to the customer drop

A

Distribution System

183
Q

Comcast uses this architecture, which allows the transmission of several services, such as analog and digital TV, video-on-demand, voice, and high speed data

A

Hybrid Fiber-Coaxial (HFC)

184
Q

Transports modulated light between the fiber node and headend

A

Fiber Optic LInk

185
Q

Used to house underground cable

A

Pedistal

186
Q

Used to modulate video, voice, and data signals

A

Quadrature Amplitude Modulation

187
Q

The process of encoding a simple radio wave with data

A

Modulation

188
Q

It is the expression of RF absolute signal strength

A

dBmV

189
Q

Primary contact point is the one located near the ______ contact point, following a similar path from the pole

A

Power

190
Q

Standard method of isolating the cause of an issue

A

Divide and conquer

191
Q

Often used to refer to the range of frequencies able to distribute telecommunication services

A

Bandwidth

192
Q

Substance that allows heat or electricity to pass along or through it

A

Conductor

193
Q

Occurs when the signals within a cable system are not properly contained within the cable facility. Also known as egress

A

Leakage

194
Q

Used for customer drops Connects tap to bonding block Shielding is aluminum foil/braid</p>

A

Drop Cable

195
Q

A range of wavelengths of electromagnetic emission

A

Spectrum

196
Q

A designated area used for transport of environmental air as part of the air distribution system. Because it is part of the air distribution system, cables installed in this pace require higher fire rating

A

Plenum

197
Q

Passage of an outside signal onto the cable, can result in noise and disruption of the desired signal

A

Ingress

198
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

199
Q

Instrument used to measure AC DC voltage, current, and resistance in ohms.

A

Volt Ohm Meter

200
Q

The characteristic of RF propagation in a cable in which the higher frequencies tend to travel along the surface of the conductor rather than through its mass

A

Skin effect

201
Q

A loop intentionally formed in the cable to compensate for expansion and contraction caused by temperature changes

A

Expansion loop

202
Q

Flexible line of rope, wire rope, cable, or webbing which generally has a connector at each end for securing a body belt to a harness.

A

Safety strap

203
Q

A list of channel numbers and their associated stations for a particular headend

A

Channel map

204
Q

A type of cable which contains two conductors, one inside and the other outside around it, separated by an insulating layer.

A

Coax cable

205
Q

Coax equipped with a support wire messengerMessenger is made of galvanized steelMessenger is attached to coax cableMessenger reduces sagging and stretching of the coax cable

A

Aerial or Messengered cable

206
Q

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

A

Dielectric

207
Q

Always capitalized, a vast computer network linking smaller computer networks worldwide. The internet includes commercial, educational, governmental, and other networks, all of which use the same set of protocols

A

Internet

208
Q

Results when two components of a system are operating at a different impedance

A

Impedance mismatch

209
Q

Used to detect egress

A

Leakage detector

210
Q

Transports the signal between the headend and the node

A

Transportation System

211
Q

A group of computers geographically far apart but connected. The internet is an example of this

A

Wide Area Netowrk

212
Q

Refers to a technology that allows the fast transfer of digital information in two directions

A

What is broadband

213
Q

The right to use another person’s real estate for a specific purpose

A

Easement

214
Q

The difference between transmitted and received power

A

Attenuation

215
Q

A group of computers and associated devices such as printers and servers that share a common communication line and other resources within a small geographic area

A

Local Area Netowrk

216
Q

Passage of signal intended to remain within the cable into the outside world can result in a weaker signal at the end of the cable and radio frequency interference to nearby devices

A

Egress

217
Q

Protects the cable from damagePolyethylene outer jacket is used for underground drop cablesTeflon outer jacket is used for air plenum or duct applicationsPVC outer jacket is used for drop cables

A

Outside Jacket

218
Q

an electromagnetic wave used to transport information from one point to another.

A

RF signal is

219
Q

One of the electrical characteristics of a cableA function of the integrity of the cable’s coax form factorDetermined by the distance from the center conductor to the inside of the sheathResults in the dissipation of power in the form of heatApplies to all CATV cables, from individual house drops to large trunk lines

A

Characteristic Impedance

220
Q

A range of wavelengths of electromagnetic emission

A

What is spectrum

221
Q

The amplitude of TV Carrier’s voltage measured across 75 ohms, expressed in dBmV

A

Signal level

222
Q

A cable splitter (overhead or underground) which branches off a main line or feeder of the distribution system

A

Tap

223
Q

A steel support wire to which the coaxial and fiber optic cables are lashed in aerial installations

A

Strand

224
Q

A coaxial RF connector commonly used for over the air terrestrial, cable, or satellite television and cable modems

A

F- connector

225
Q

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

A

Ingress

226
Q

Electromagnetic signal above the audio and below the infrared frequencies

A

Radio frequency is:

227
Q

Also known as hardline cableLarger gauge cable than drop cableShielding is a solid aluminum tube

A

Transportation and Distribution cable

TurtlePower 22-23 (41 decks)

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