Brainscape's Knowledge GenomeTM

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


See full index

Mark/Scott/Troy-Lanes Study > scott New Hire-Residential Tech-Quizlet > Flashcards

scott New Hire-Residential Tech-Quizlet Flashcards

1
Q

is a group of parts that work together to achieve a specific purpose.

A

System

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

is a set of interacting or interdependent parts forming a complex or
intricate whole

A

System

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

is simply a collection of parts assembled together for the purpose of transferring data and information between people or euipment over
distances

A

Communication system

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

packages the source information for distribution
and is transmitted

A

Transmitter

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

List the 3 different types of
mediums that data can be transferred

A

Copper, glass, air

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

receives the transmitted information and decodes it back into the original
source signal

A

Receiver

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

the means to transport some kind of information
from one place to another

A

Signal

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

Continuos signal that varies in amplitude or frequency as a function of changes at its input

A

Analog

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

Non-continuous signal or carrier that changes its output in discreetly timed steps of voltage level or phase that can represent numerical values or other
information

A

Digital

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

a distubance that travels from one location to another that can transfer
energy

A

Waves

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

is the distance or length of
one complete wave cycle

A

Wavelength

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

is the measured rate of how many times a wave goes through a complete cycle or repeats itself over
time

A

Frequency

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

the measurement of counting the frequency of waves per second is
known as this

A

Hertz

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

is the difference between a signals maximum or minimum value during one wavelength and usually indicates signal strenth or
intensity

A

Ampitude

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

The relationship in time between the successive states or cycles of an oscillating wave which may or may not be in sync

A

Phase

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

RF spectrum falls aproximately in this range,
in Hz

A

3 kHz to 300 GHz

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

refers to an electromagentic wave that generally falls in the frequency range of 3 kHz
to 300 GHZ

A

RF

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

a range of wavelengths of
electromagentic emission

A

Spectrum

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

AM radio

A

535 kHZ to 1.7 MHz

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

FM radio

A

88 MHZ to 108 MHz

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

short wave radio

A

5.9 to 26.1 MHz

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

Aircraft navigation
frequencies

A

110 to 137 MHz

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

Very high Frequency
(VHF)

A

54 MHz to 216 MHz

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

ultra high frequency (UHF)

A

470 to 806 MHz

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

Garage door

A

40 MHz

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

Radio controlled airplanes

A

72 MHz

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

Law enforcement and fire

A

150 to 155 MHz

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

Air traffic control

A

960 to 1215 MHz

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

LTE

A

700, 800, 1700, 1900 MHz

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

WiFi

A

2.4 and 5 GHz

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

is the process of taking a source information signal and adding it to or encoding it as another signal

A

Modulation

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

means changing one or sevel characteristics of a
wave

A

modulating

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

allows the abiltiy to transmit a multiude of signals simultaneously and more efficiently over a
single medium

A

Modulation

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

is the process of taking an input signal and changing it to be a new carrier
signal

A

Modulation

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

List the 4 steps of
modulation

A

Digitization, compression, decode, encode

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

List the three types of
analog modulation

A

Amplitude, Frequency, Phase

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

Amplitude modulation for
video is used for this

A

Video

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Phase modulation for
video is used for this

A

Color

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

Frequency modulation for
video is used for this

A

Audio

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

AM

A

Amplitude Modulation

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

type of modulation where the amplitude of the carrier signal is changed in proportion to the
message signal

A

Amplitude Modulation

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

This type of modulation is used in radio broadcasting

A

Amplitude Modulation

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

type of modulation where the frequency of the
carrier signal is changed

A

Frequency modulation

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

FM

A

Frequency modulation

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

type of modulation where a shift of the carrier signal is varied in accordance with the amplitude of the
modulating signal

A

Phase modulation

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

is a family of techniques used in telecommunication for
digital modulation

A

keying

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

is where modulating signal takes one of a predetermined number of
values at all times

A

Keying

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

scheme that conveys data by changing the phase of
a reference signal

A

PSK (Phase Shift Keying)

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

Phase shift keying uses
these two waves

A

sine and cosine

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

scheme in which digital information is transmitted through discrete frequency changes of a
carrier signal

A

Frequency Shift Keying (FSK)

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

This type of keying is used for amatuer radio, caller
ID, emergency broadcasts

A

FSK

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

This type of keying is widely used for wireless LANS, RFID, bluetooth

A

PSK (Phase Shift Keying)

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

scheme that represents digital data as variations in the amplitude of a carrier
wave

A

ASK (Amplitude Shift Keying)

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

is the process of changing a data signal to a carrier
signal for transmission

A

Modulating

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

is the process of changing a carrier signal back to a
data signal

A

demodulation

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

is a scheme in which the value of a symbol consisting of multiple bits is represented by amplitude and phase
states of a carrier

A

QAM

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

difference between the original and recreated
signals

A

Quantization

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

creates a theroretical limit
on SNR for a bit resolution

A

Quantization

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

taking snapshots of the analog signal fast enough
to preserve its frequency

A

Sampling

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

turing samples into ampitude values with enough resolution to preserve the waveform
changes

A

Quantizing

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

formula for determing the minimum samping rates capable of preserving the content in a signal.

A

Nyquist Theorem

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

The sampling rate must be how many times the
highest frequency

A

2x

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

phenonmenon that causes frequencies higher than the Nyquist frequency to be mapped to a frequency below the
Nyquist frequency

A

Aliasing

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

The FCC had originally allocated this bandwidth of a channel to carry
video, audio and color

A

6 MHz

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

QAM modulates the amplitude of these two
incoming waves

A

I and Q wave

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

This wave is coincident
with the carrier

A

In phase (I wave)

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

This wave is 90 degrees away from the incidental
direction

A

Quadrature wave (q wave)

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

The Q wave is out of phase by this many
degrees

A

90 degrees

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

The relationship between
the I and Q waves is called

A

Orthagonal

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

The ideal location for the a particular symbol in the constellation box in is in this section of the box

A

Center

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

This is an I/Q modulation technique for transmitting digital information across an analog transport
system

A

QPSK

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

This is the technique to combine multiple signals
into one transport

A

multiplexing

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

This device combines multiple input signals into a single signal for
transmission

A

Multiplexer

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

After transmission this device is used to separate the signals back into their
original input signals

A

Demultiplexer

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

it is a technique that assignes a frequency band or channel within a larger
band

A

FDM (Frequency Divison Multiplexing)

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

Multiple carries oscillating at different frequencies are transported simultaneously in a same
meduim

A

FDM (Frequency Divison Multiplexing)

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

measures the quality of received signals by measuring average deviation from the center
of the symbol region

A

MER ( Modulation Error Rate)

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

measures how often a symbol appears in the wrong constellation box

A

BER

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

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

A

SNR

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

is used in data transmission to compensate for certain in- channel impairments the degrade the quality of
digital signals

A

Adaptive Equalization Technology (AET)

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

This tool makes use of Adaptive Equalization Technology to deliver information on
troubleshooting

A

Scout Flux

82
Q

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

A

ICFR (In channel Frequency Response)

83
Q

Flux will show you up to how many overlays for the
device you are analyzing

A

5

84
Q

This timeout indicates cable modem can’t find
UCD

A

T1

85
Q

This timeout indicates received response to broadcast maintenance request, but no unicast maintenance opportunities received

A

T4

86
Q

No maintenance broadcasts for ranging
oportunities received

A

T2

87
Q

This timeout indicates no ranging response
received

A

T3

88
Q

This is a great source to
investigate modem issues

A

Event log

89
Q

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

A

T2

90
Q

The modem scans the downstream QAM channels, looking for an upstream channel
descriptor.

A

T1

91
Q

Once a cable modem is online, it continues to communicate with the CMTS. The modem watches for Keep Alive
requests from the CMTS

A

T4

92
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

T3

93
Q

T2 occurs when the modem waits for an opportunity to communicate with CMTS and if it doesnt get an oppurtuntiy with this many
seconds

A

12

94
Q

After this many attempts for a response from the CMTS the modem will
restart

A

16

95
Q

If a modem doesn’t receive a keep alive in this many seconds a T4
registers

A

30 seconds

96
Q

After this many T4s the
modem will restart

A

16

97
Q

This two timeouts indicate an upstream or
downstream problem

A

T3 and T4

98
Q

is the process of sending a signal over a physical point-to-point or point to
multipoint

A

Transmission

99
Q

Connection between two
nodes or end points

A

Point to point

100
Q

one to many connection

A

Point to multipoint

101
Q

is a material substance that can propagate
energy waves

A

Transmission medium

102
Q

a term used to describe different ways a wave might travel

A

propagation

103
Q

The loss of energy
through a medium

A

Attenuation

104
Q

is the difference in energy when measured between
two points

A

Attenuation

105
Q

is the attenuation across
distances

A

Path loss

106
Q

is simply the phenomenon of waves bouncing off an
object

A

Reflection

107
Q

is the transfer of energy as a wave passes through
something

A

Absorption

108
Q

phenomenon that occur when a wave encounters an obstacle and bends
around cetain objects

A

Diffraction

109
Q

is a change in direction of
a propagating wave

A

Refraction

110
Q

caused when a signal hits an uneven surface and reflects in many different
directions

A

Scattering

111
Q

is when multiple waves combine while traveling
along a shared medium

A

Interference

112
Q

is a type of interference that occurs where the two interfering waves move in
the opposite direction

A

Destructive interference

113
Q

Name the two types of interference

A

Constructive and destructive

114
Q

refers to any transmission of data from different points over a physical
connection

A

Wired communications

115
Q

this wave will propagate
outwards in any direction

A

wireless communications

116
Q

is typically used between devices that are in close
range

A

Bluetooth

117
Q

802.15 protocol

A

zigbee

118
Q

is a standard for communicating between things in very close
proximity,

A

NFC( Near Field Communications)

119
Q

is a way of supporting out xfinity Internet customers and ensuring they have a reliable over Wi-Fi
experience

A

WHO (WiFi- Optimized Home)

120
Q

This is the brain of the
network

A

CMC Comcast Media Center

121
Q

is responsible for receiving and processing signals and them sending those signals over the
Comcast network

A

The Headend

122
Q

this serves as a gateway to both the public internet and Comcast own
managed network

A

Headend

123
Q

List the two different types of backbone

A

I and C. Internet and Comcast bone

124
Q

provides complementary functionality to cable modems enabling data connectivity to a wide
area network

A

CMTS

125
Q

device that modulates information onto digital carriers to be sent to the
customers home

A

Edge QAM

126
Q

is the origination point for a cable system where incoming signals may be amplified converted, processed into a common
distribution cable

A

Headend

127
Q

hosts two way communication with the DOCSIS devices located
at the customer premises

A

CMTS

128
Q

Modem means

A

Modulation and De-modulation

129
Q

is the collection of circuit- switched telephone networks that are maintained and operated
by national operators

A

PSTN

130
Q

is a device that takes multiple analog or digital input signals are combines them into one signal for transmission over a shared medium

A

Mux

131
Q

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

A

FDM (Frequency Divison Multiplexing)

132
Q

This device establishes a clear path between the upstream and downstream
energy

A

Diplex filter

133
Q

technology that multiplexes a number of optical carrier signals onto a single fiber by using different
wavelengths

A

WDM

134
Q

These are two different types of multiplexing
commonly used

A

Frequency and wavlength

135
Q

is a light source such as a
laser

A

Transmitter

136
Q

This converts a signal from an electrical to an optical
format

A

Transmitter

137
Q

Three types of fibers

A

Loose tube, central tube and tight buffered

138
Q

a single strength member surronded by color coded
buffer tubes

A

Loose Tube

139
Q

This type of fiber is usually used in the outside plant and underground

A

Loose tube

140
Q

Thisy type of fiber is usually used in alternative
routing

A

Cental tube

141
Q

This type of fiber is usually used in high rises and
plenum

A

Tight buffered

142
Q

This allows easy striping
off the fiber

A

rip cords

143
Q

This is the primary cause
of light loss in the fiber

A

Rayleigh Scattering

144
Q

Power is provided on the
distribtuion via

A

power inserter

145
Q

This type of wave is required by the active
devices in the network

A

Quasi- saquare wave

146
Q

This jacket is used for
underground drop cables

A

Polyethylene

147
Q

This jacket is used for air plenum or duct
applications

A

Teflon

148
Q

This jacket is used for drop
cables

A

PVC

149
Q

All drop cables used for RF signal distribtion shall meet the minimum physcial and electrical requirements of
ANSI/SCTE

A

74

150
Q

Coax that is not terminated represents an impedence of

A

infinity

151
Q

is a reduction in power as RF energy is absorebed by the transmitting
medium

A

Attenuation

152
Q

is the difference in RF energy when measured
between two points

A

AtTenuation

153
Q

Cable standards are measured at this temperature in
Farenheight

A

68 degrees

154
Q

Each 10 degree increase changes the attenuation
by this %

A

1.2%

155
Q

a measure of the received carrier strength relative to the strength of the
received noise activity

A

Carrier to Noise Ratio

156
Q

Every active device employs this device to mitigate interference between the sub-low upstream carries and higher downstream
carriers

A

Diplex filter

157
Q

passive signal splitting device with minimum signal loss between the input port and output port
and higher loss on the tap

A

DC Directional coupler

158
Q

energy being reflected back toward the transmitting device

A

Impedance mismatch

159
Q

FCC monitors cable systems leakage doesn’t interfere with these 3
frequencies

A

Military, emergency, aeronautical

160
Q

is simply rogue energy

A

electromagentic interference

161
Q

RFI

A

Radio Frequency Interference

162
Q

is a product of forward carriers being reflected across dissimilar metals or
corrrosion

A

Common Path Distorotion

163
Q

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

A

Impedance mismatch

164
Q

this is any change in a signal that alters the basic waveform or the relationship between various frequency
components

A

Distortion

165
Q

are impairments such as micro reflections, amplitude ripple and
group delay

A

Linear distortion

166
Q

are impairments such as CPD return laser clipping
causing spikes

A

Non linear

167
Q

micro reflections, ripple, group delay, jitter and notches are example of

A

Linear distortions

168
Q

any time a singal passes through a device, as long as the shape of the ouput is identical to the sharpe
of the input

A

Linear distortions

169
Q

any time a signal passes through a device and the shape of the signal from the input to the output is
changed

A

Non linear

170
Q

is non linear distortion that may have a severe effect on the return path signal
quality

A

CPD

171
Q

PAN

A

Personal Area Network

172
Q

HAN

A

Home Area Network

173
Q

CAN

A

Campus Area Network

174
Q

NAN

A

Near-Me Area Network

175
Q

CRAN

A

Converged Regional Area Network

176
Q

is a method of designing modular communication protocols in which logically separate functions in the network are abstracted from their underlying structures by inclusion or information hiding within higher level
objects

A

Encapsulation

177
Q

What year was the OSI
model developed

A

1977

178
Q

CDMA

A

Code divison multiple access

179
Q

technology that allows multiple cable boxes to utilize a single radio
channel.

A

Code divison multiple access (CDMA)

180
Q

is a load-sharing technique for logically combining multiple
DOCSIS channels

A

Channel bonding

181
Q

is a standard for home entertainment networking in which esisting subscriber drop coaxial cabling and components are used to interconnect
set top boxes

A

MoCA

182
Q

this device funcitons as the control center for the
home theater system

A

A/V receiver

183
Q

is a technique for enriching the quality and depth of sound by channeling audio tracks to
different speakers

A

Surrond Sound

184
Q

These are the two formats supported by most high
end audio systems

A

Dolby and DTS

185
Q

DTS

A

Digital Theater System

186
Q

is simply a ratio of the width to the height of an
image or screen

A

Aspect ratio

187
Q

tiny dots that convey light and combine to form a picture

A

Pixel

188
Q

Pixel is short for these two
words

A

Picture element

189
Q

is the number of timer per second that the scan sequence is repeated from the top to the
bottom

A

Vertical scan rate

190
Q

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

A

Horizontal Scan

191
Q

Motion pictures are created by rapidly changing picture frames is
called

A

Frame rate

192
Q

The speed at which pictures are displayed in
seconds

A

Frame rate

193
Q

These are the two modes
of frame rate

A

Interlace and progressive

194
Q

is the method of displaying television pictures in which the picture is displayed in two
halves

A

Interlaced

195
Q

Interlaced products how
many frames per second

A

30

196
Q

SDTV

A

Standard Definition Televison

197
Q

EDTV

A

Enhanced Definition Televison

198
Q

720P pixel resolution

A

720 x 1280

199
Q

Home theater displays fall into two categories

A

Flat panel and projection

200
Q

DVI

A

Digital Video Interface

201
Q

Green component is

A

Lumincance

202
Q

Red and blue

A

Chrominance

Mark/Scott/Troy-Lanes Study (11 decks)

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