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Jared Nationals > Network Online Tools > Flashcards

Network Online Tools Flashcards

(64 cards)

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1
Q

This is a signal correction process in which the CMTS commands the modem to pre-distort its transmitted RF to overcome plant impairments between the CM and the CMTS

A

Adaptive Equalization

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2
Q

Here you can see the results from the file upload from the device query performed under the real time CM tab in Scout Monitor.

A

Batch Results

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3
Q

This Scout Monitor tool is designed to give real-time information on the performance of each individual upstream channel that serves a group of devices.

A

CMTS Microscope

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4
Q

The data transmitted between the CMTS and the modem is split into these, which allows for error correction

A

Code Words

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5
Q

This icon in Scout Monitor provides a view into which upstream channel(s) are being used by a particular node.

A

Node Lookup

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6
Q

This is assigned a service flow by the CMTS

A

Upstream Channel

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7
Q

DOCSIS uses these to identify which service flow on which cable modem may use the allocated upstream channel bandwidth.

A

Service Identifier (SID)

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8
Q

This refers to damaged codewords between the CMTS and modem that can be repaired.

A

FEC Corrected

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9
Q

This refers to damaged codewords between the CMTS and modem that can not be repaired.

A

FEC Uncorrected

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10
Q

This menu option in Scout takes you to the home page

A

Home

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11
Q

This menu option in Scout is for logging out or where administrators will go to access administrative features

A

Admin

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12
Q

This menu option in Scout is for accessing pages related to real-time device data

A

Device Watch

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13
Q

This menu option in Scout is for accessing Xfinity Voice, Call Summary, and Upstream Interface Settings

A

CMTS Tools

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14
Q

This menu option in Scout is for accessing pages related to legacy digital set top box (or STB) video monitoring

A

Video Monitoring

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15
Q

This menu option in Scout is for finding rollup summary data for Upstream Forward Error Correction (or FEC) rates, video STBs, and Video On Demand, or VOD streams.

A

Dashboards

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16
Q

This device watch submenu is where you can enter a customer device to be monitored for the online status every 10 minutes

A

CM Watch

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17
Q

This device watch submenu is where you can find information for a particular customer

A

Customer Report

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18
Q

This device watch submenu is where you can enter a node and the tool does a real-time check on all the modems in that node looking for a service outages or potential degraded service issues.

A

Node Analyzer

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19
Q

This device watch submenu is where you can create a custom report that displays real-time data for a particular device with the attributes you select

A

Real Time CM

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20
Q

This device watch submenu is where you can see the results from the file upload from the device query performed under the real time CM tab

A

Batch Results

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21
Q

This Dashboard submenu is where you can view the upstream uncorrectable error rates for an entire upstream channel, or view all of the upstream channels on a particular CMTS

A

FEC Dashboard

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22
Q

In the customer report modem toolbox, the magnifying glass is the icon for this tool

A

Modem Microscope

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23
Q

In the customer report modem toolbox, the globe is the icon for this tool

A

Proximity

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24
Q

In the customer report modem toolbox, the line graph is the icon for this tool

A

Charts

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25
In the customer report modem toolbox, the Bell is the icon for this tool
ping
26
In the customer report modem toolbox, the Microscope is the icon for this tool
CMTS Microscope
27
In the customer report modem toolbox, the H is the icon for this tool
FEC History
28
In the customer report modem toolbox, the Telephone icon is for this tool
CDV Call Summary
29
In the customer report modem toolbox, the earmarked paper icon is for this tool
CMTS Summary
30
In the customer report modem toolbox, the notebook icon is for this tool
Event Log
31
In the customer report modem toolbox, the Flux icon is for this tool
Adaptive Equalization
32
In the customer report modem toolbox, the red button icon is for this tool
Modem Reset
33
In the customer report modem toolbox, the Arris logo icon is for this tool
Arris Status
34
In the customer report modem toolbox, the computer icon is for this tool
CPE/Router Queries
35
This is the formula for calculating FEC uncorrected percentage
uncorrectable codewords divided by total codewords
36
This is the bouncing back and forth of a signal between two interfaces that have an impedance mismatch
Micro Reflection
37
This generates an amplitude and phase distortion of signal
Micro Reflection
38
This signal distortion can be used to estimate the location of a line problem
Micro Reflection
39
This is a non-flat frequency response in which the amplitude versus frequency characteristic of the channel or operating spectrum is sloped or tilted across a specific frequency range
Amplitude Tilt
40
These are the most common causes of micro-reflections
Unterminated ports, bad connectors, damaged cable
41
These are the most common causes of amplitude tilt
loose mainline/house fittings, corrosion, kinked cable, low quality splitters, and water in cable
42
This is observed when all portions of the channel do not arrive at the receiver at the same time.
Group Delay
43
This is the most common cause of group delay
diplex filter or any filtering mechanism
44
These are three linear distortions
Micro Reflections, Amplitude Tilt, and Group Delay
45
These are the "3 D's" of impedance mismatch
Diameter of center-conductor, Distance from center-conductor to sheath, and Dielectric
46
This is both an analog and a digital modulation scheme that converts two analog message signals and two digital bit streams
QAM Constellations
47
This is a window of amplitude between the vestigial sideband and the aural carrier
In-Channel Frequency Response (ICFR)
48
This is a method of determining the cavity distance between two reflectors measuring signal amplitude deviating up or down in .75 dB increments
Ripples
49
eTDR
Equalized Time Domain Reflector
50
This performs the distance calculations and displays the determined cavity size for echoes in scout flux.
(Equalized Time Domain Reflector) eTDR
51
The eTDR, without interpolation, is accurate within this length
42.5 ft
52
The eTDR, with interpolation and correct Velocity of Propagation, is usually accurate within this length
20 ft
53
This can be selected from the drop-down menu just below the node number on the top toolbar of NWT Flux
Frequency
54
When you enter NWT Flux for the first time, it will default to this view
Map
55
In the NWT Flux map view, you can change the map and theme options from these two default options
Signatures and Device Count
56
This happens when a transmitted signal encounters an impedance mismatch, and some of the signal is reflected back onto the transmitted signal causing signals to build up amplitude in some locations and cancel in others
Standing Waves
57
This is caused by corrosion or poor grounding, mainly in passives, which can change the passive characteristics and create a tuned circuit; in effect, a filter.
RF Notch
58
This is a very long standing wave caused by a very short reflective cavity and is generally caused by an impedance mismatch within an active device where the source and reflected signals are very strong
Frequency Suck Out
59
This is caused by a lack of shielding integrity
Ingress
60
This is caused by frequency sensitive attenuation or by settings made at actives that cause the signal to gradually rise over the entire spectrum or gradually drop off
Overall Tilt
61
Three tests an NCT will perform with their meter
Sweep, Leakage Detection, Active Test Points
62
The formula for calculating the distance to the fault causing a standing wave in spectra
( Velocity of propagation / Width in MHz between peak or null ) x 492
63
These are corrupted bits of data in the transmission or flow between the CMTS and modem.
Codeword Errors
64
This NWT Flux mode simply identifies groups of modems with common signatures. The colors do not indicate the type or severity of a problem.
Signature Mode

Jared Nationals (14 decks)

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