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Question 1

What would happen if there was awidespread outage during the SuperBowl or a major Pay-Per-View event?

Answer 1

 Lots of very unhappy customers Lost revenue

Question 2

what does market health help?

Answer 2

By determining what affects the score, you can then identify the problemthat is common to the MAC addresses that are contributing to the score.

Question 3

What is the impact to the customer of performing a reset in scout?

Answer 3

Temporary interruption of Xfinity Internet and Xfinity Voice service.

Question 4

Why do you think we should have atleast two headends with full signalacquisition of all video programmingsources in a major market?

Answer 4

In case of an outage, there would still beanother headend that would keep thenetwork in operation.

Question 5

How can we minimize any fiber cut exposure between multiple headends?

Answer 5

Connect headends with a route-diverse fiber ring.

Question 6

What is the second part of the headend and combining network?

Answer 6

The Distribution Hub

Question 7

What equipment is located in thedistribution or primary hub?

Answer 7

 High-speed routers Two-way service equipment

Question 8

What process can be utilized to combinemultiple optical signals onto the samefiber?

Answer 8

Wavelength division multiplexing

Question 9

What are used to combine and splitoptical wavelengths onto the single fiber?

Answer 9

Optical Filters.

Question 10

Loose tube fiber

Answer 10

consists of a single strengthmember in the center surrounded by colorcodedbuffer tubes, which contain fibersthat are also color-coded. These buffertubes may be covered with a fiberglassyarn (Kevlar®), an armored jacket isplaced around the entire bundle, and ajacket covering the cable helps to keep itweatherproof.

Question 11

Flex tube fiber

Answer 11

consists of buffer tubes surrounded by a fiberglass wrap and twosteel strength members on each side molded into the jacket.

Question 12

Uni-tube fiber

Answer 12

cable consists of larger buffer tubes with the fibers inside,surrounded by fiberglass water block tape, armor, two steel strengthmembers, and a jacket.

Question 13

Ribbon configuration fiber

Answer 13

is the same as uni-tube, except fibers arearranged side-by-side.

Question 14

Ribbon stranded fiber

Answer 14

is similar to loose tube. However, ribbon-stranded ribbonfibers are contained in buffer tubes.

Question 15

Patch Panel-Related fiber problem

Answer 15

This could includeimproperly installed connectors andjumpers, contamination of the connector,improper cable routing, or a localizedfailure.

Question 16

System-Related fiber problem

Answer 16

This would usually be due to over or under-driving theoptical transmitter.

Question 17

Installation-Related fiber problem

Answer 17

This type of failure would be due to causes such asimproper bending radius or a clamped cable

Question 18

Construction-Related fiber problem

Answer 18

These failures would normally be due toconstruction and work-related activities. In the case of an aerial cable, it canalso be damaged by improper installation techniques, gunshots, fallingbranches, and automobile crashes, just to name a few.

Question 19

Thisconnector offers a good balance betweenloss and reflections and is the mostcommonly used connector.

Answer 19

Standard Connector (SC)

Question 20

This connector provides a notch-push andscrew-on connection. It is less frequently used but will be seen in someinstallations.

Answer 20

Ferruled Connector (FC)

Question 21

This connector has a flat cut on the end ofthe fiber and any reflections may be directed back to the source. It providesthe best insertion loss but about 5 dB worse return loss.

Answer 21

UPC (Ultra Polish Connector)

Question 22

It provides an angle cut of 8 to 12 degreeson the end of the fiber. The loss is low, but any reflections may be directedback in the cladding and not to the source.

Answer 22

APC (Angle Polish Connector)

Question 23

This is the newer optical transport system that uses fibers in pairs with anew LC and/or SC. They are different so that they can be plugged in sideby-side.

Answer 23

LC

Question 24

In a typical CATV distribution, what passive component contributes thegreatest loss?

Answer 24

Cable.

Question 25

What do we call a device in the CATV distribution that has a gain between itsinput and output?

Answer 25

It is called an “active device.”

Question 26

The difference in RF signal level from the highest point on the sweep trace to the lowest point,measured in dB. Limitations are generally set on how high this number can get as the cascadeprogresses.

Answer 26

Peak-to-Valley

Question 27

Progressive loss of signal level at a band edge.

Answer 27

Roll Off

Question 28

Level of power difference between carriers in a given spectrum, usually determined by systemspecification. Tilt is linier in nature starting at the lowest frequency and gains as frequencyincreases.

Answer 28

Tilt

Question 29

The actual sweep response of equipment prior to normalization.

Answer 29

Raw Sweep

Question 30

A function of a sweep meter that ‘zeroes out’ the frequency response at a particular location inthe network. All subsequent measurements will be taken relative to that point. Typically used atthe node for both forward and return sweep, and sometimes used in troubleshooting.

Answer 30

Normalization

Question 31

Used to insert (combine) the sweep points forward and return telemetry into the downstream/upstream path and provide the sweep transceiver with a sample of the forward channels andtheir levels.

Answer 31

Directional Couplers

Question 32

Any sweep response that falls within peak to valley limits and which matches the point ofnormalization reasonably well given its depth in cascade.

Answer 32

Normal Response

Question 33

Signal loss that must be compensated for when utilizing probe locations on equipment.

Answer 33

Test Point Compensation

Question 34

Previous stored normalization sweep of points within the system.

Answer 34

Sweep Reference

Question 35

Total level (of a reference carrier, sweep etc.) injected in the return path, at a designatedinjection facility in the network (typically an active device).

Answer 35

Injection level

Question 36

Upper and lower frequency limits of standard channel carrier/spectrum.

Answer 36

Band Edge

Question 37

Used to combine more than one NBTC while sweeping multiple returns.

Answer 37

Combiners

Question 38

Equipment used to receive data from more than one field unit simultaneously.

Answer 38

Return Receivers

Question 39

A frequency (usually digital) that is used to connect via network more than one measuringdevice to each other.

Answer 39

Telemetry Frequencies

Question 40

What is reverse path noise?

Answer 40

The summation of all noise from all the amplifiers in the reverse path.