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War Games > One > Flashcards

One Flashcards

1
Q

used to determine the distance of a known fault on the cable plant from a specific locatoin

A

TDR

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2
Q

a device that assists in testing return ingress at a tap location using an available dust cap cover port

A

I stop

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3
Q

the most common home theatre connection, with sound broken out into two separate cables, color coded fro left and right audio

A

composite

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4
Q

typically used for audio, this is a form of modulation in which the amplitude of a signal changes in accordance with the instantaneous value of the modulating signal

A

AM

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5
Q

in signal processing, this term refers to an effect that causes different signals to become indistinguishable when sampled

A

aliasing

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6
Q

known as an intra-coded picture

A

I pic

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7
Q

a design philosophy where the loss of the cable and other passive devices before an amplifier station equals its gain

A

unity gain

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8
Q

a discontinuous signal whose various states are discrete intervals apart.

A

digital signal

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9
Q

this type of test requires a reference pattern to be sent in order to interpret if errors are present

A

closed loop testing

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10
Q

this RF passive device has a loss of 3.01dB, disregarding all other internal circuitry

A

splitter

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11
Q

the number of bits per symbol transmitted in a 256 QAM channel

A

8 bits

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12
Q

this theorem states that in order to obtain an accurate recreation of a signal, it must be sampled at a rate of at least twice the highest frequency.

A

Nyquist’s rule

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13
Q

as the modulation rate increases in a constellation diagram, the symbol regions decrease and are what fraction of the prior region

A

25% (a quarter)

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14
Q

the minimum heel length for new and used boots

A

3/4” ; 1/2”

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15
Q

a digital connection that can carry both digital video and up to eight channels of audio on a single cable

A

HDMI

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16
Q

the maximum volume at 3m of the Xfinity home smoke and or heat detector sounder

A

85 dBa

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17
Q

this is determined by the ratio between the digital carrier RMS level and the noise floor RMS level

A

carrier to noise ratio

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18
Q

Distortion components caused by non-linear mixing of carriers in the transmission system

A

Carrier to Coherent Interference

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19
Q

Generally HUM at low frequency—60Hz from the power system, 120Hz from linear power supplies, < 1 KHz from switching power supplies, and other low frequency sources.

A

Carrier to Low Frequency Distortion

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20
Q

Continuous unwanted signal within the channel pass band that can affect digital decoding but has minimal adverse effect on analog signals

A

Carrier to Sustained Impairments (CI)

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21
Q

Digital effect due to power loading on amplifier circuits, generally present in processing equipment.

A

Spectral Regrowth

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22
Q

– In the analog world, this results in “Ghosting” or “fringing,” also known as “ringing.” These are reflections that, if high enough in level in relation to the carrier, cause digital decoding problems

A

Multipath and Micro-reflections

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23
Q

Generally has no effect in the analog world, but can cause severe reliability problems in digital carriers. This is usually due to oscillator instability in processing equipment.

A

Phase Noise

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24
Q

Result of the presence of any of the distortion components listed above that cause an error in the digital decoding

A

Amplitude and Phase Distortion

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25
Q

a signal deviation typically caused by coax impairments

A

linear distortion

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26
Q

nominal acceptable C/N for reliable operation is:

A

QPSK - 12dB
16QAM - 20dB
64QAM - 31dB
256QAM - 38dB

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27
Q

There are numerous factors that contribute to digital carrier stability

A

Type of programming
Compression ratios
SD vs HD

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28
Q

480nm

A

blue light

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29
Q

455nm

A

violet

30
Q

1310nm in terms of where on the spectrum

A

infra red

31
Q

type of voice trunking used by a soft switch

A

SIP

32
Q

this is caused by the signal hitting an uneven surface and is reflected in many different directions

A

scattering

33
Q

when overlaying access points use the same channel or channels with overlapping frequencies causing connectivity issues for customers

A

co channel interferences

34
Q

when an object takes in the signal and retains some or all of it

A

absorption

35
Q

a technique used to keep upstream energy separate from downstream energy

A

frequency division multiplexing

36
Q

active devices use employ this to establish a clear path between the upstream and downstream energy

A

diplex filter

37
Q

48.09

A

48.09

38
Q

Function of a sweep meter zeros out the frequency response at a particular location in the network

A

Normalization

39
Q

the reference carrier under test for a specification of +-2 dB

A

ICFR

40
Q

the boundaries in the coaxial plant that can help to determine where faults, impedance mismatches are located

A

reflection zone

41
Q

type of distortion most often caused by external interference or ingress

A

non linear distortion

42
Q

measurement of signal amplitude (in ICFR chart) deviating up or down in .75dB increments

A

ripples

43
Q

these are samples in time, not physical locations, in the plant

A

taps

44
Q

the signal measured at the CMTS from the customers DOCSIS device

A

upstream receive power

45
Q

a measurement of the signal level from the DOCSIS device to the CMTS

A

upstream transmit power

46
Q

the comparison of the signal received at the headend from the customers DOCSIS device to the noise floor.

A

upstream SNR

47
Q

750 nm

A

red

48
Q

550 nm

A

green

49
Q

ccs

A

concurrent call sessions

50
Q

ISDN

A

integrated services digital network

51
Q

consists of 23 b-channels and 1 d-channels

A

pri

52
Q

known for its standard 1.544 Mbps bandwidth

A

T1

53
Q

when a signal passes through an object and the signal is redirected

A

refraction

54
Q

when a wireless signal hits a smooth object and bounces off the surface

A

reflection

55
Q

Name 3 aerial lift vehicle limits

A

Max boom lift capacity
Max bucket load capacity
Payload and chassis weight

56
Q

When it is necessary to raise and lower tools or equipment from the bucket, you would use

A

a hand line

57
Q

Examples of some critical welds that warrant special attention on your daily inspection of the aerial lift vehicle are located where

A

Turret wings are welded to the base plate
Cylinder mounts are welded to the boom
Cylinder mounts are welded to the turret
Welds are on the platform support

58
Q

The semi-annual maintenance checks for Aerial Lift Vehicles include:

A

Changing the hydraulic filter
Inspecting the hydraulic oil
Checking all valve pressure settings

59
Q

Aerial Lift Vehicle Cab inspection requires the check of the following items:

A

Fire extinguisher
First aid kit and flares
Lights
Wheel chocks

60
Q

Weekly check of Aerial Lift Vehicles include

A 
Battery condition 
Fan belt pump 
Rotation chain 
Bolt tightness 
Stabilizers 
Proper operations
61
Q

Name the types of decals that you would find in an Aerial Lift

A

Danger, Warnings, Cautions and operating instructions/notice

62
Q

Hazards of driving a heavy duty Aerial lift vehicle driving hazards include:

A 
Length,  
height,  
width,  
weight,  
boom,  
bucket,  
turning radius  
stopping distance
63
Q

Three common causes of aerial lift accidents

A

Stability problems, Operator error, Violating OSHA regulations

64
Q

contain all the information to be transmitted and serve as reference points

A

I-picture

65
Q

which only carry information about which pixels change in relation to the i-frame

A

P-picture

66
Q

which carry information about which pixels change in relation to the i-frame for transmitted and to-be-transmitted frames

A

B-picture

67
Q

Wi-Fi Optimized Home visits (both TC and PRO installs) we have broken them down into 5 major steps.

A 
Arrival and Initial Assessment;
Discussion with Customer;
Detailed Assessment, Device Placement and Install;
Test and Fortify;
Demonstration and Customer Education;
68
Q

The four types of tapers

A

Shoulder tapers
Shifting tapers
Merging tapers (lane closure tapers)
Downstream tapers

69
Q

area that separates road users from the work area or an unsafe area.

A

Buffer spaces, allow for some recovery time from an errant vehicle and some bailout time for workers in the work area.

70
Q

goal of a traffic control zone

A

allow work to proceed safely with minimum traffic disruption

71
Q

This assists customers with visual disabilities with finding tv shows and movies independently

A

Voice guidance

War Games (7 decks)

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