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Question 1

What would happen if there was a
widespread outage during the Super
Bowl 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 problem
that 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 at
least two headends with full signal
acquisition of all video programming
sources in a major market?

Answer 4

In case of an outage, there would still be
another headend that would keep the
network 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 the

distribution or primary hub?

Answer 7

 High-speed routers

 Two-way service equipment

Question 8

What process can be utilized to combine
multiple optical signals onto the same
fiber?

Answer 8

Wavelength division multiplexing

Question 9

What are used to combine and split

optical wavelengths onto the single fiber?

Answer 9

Optical Filters.

Question 10

Loose tube fiber

Answer 10

consists of a single strength
member in the center surrounded by colorcoded
buffer tubes, which contain fibers
that are also color-coded. These buffer
tubes may be covered with a fiberglass
yarn (Kevlar®), an armored jacket is
placed around the entire bundle, and a
jacket covering the cable helps to keep it
weatherproof.

Question 11

Flex tube fiber

Answer 11

consists of buffer tubes surrounded by a fiberglass wrap and two
steel 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 strength
members, and a jacket.

Question 13

Ribbon configuration fiber

Answer 13

is the same as uni-tube, except fibers are

arranged side-by-side.

Question 14

Ribbon stranded fiber

Answer 14

is similar to loose tube. However, ribbon-stranded ribbon

fibers are contained in buffer tubes.

Question 15

Patch Panel-Related fiber problem

Answer 15

This could include
improperly installed connectors and
jumpers, contamination of the connector,
improper cable routing, or a localized
failure.

Question 16

System-Related fiber problem

Answer 16

This would usually be due to over or under-driving the

optical transmitter.

Question 17

Installation-Related fiber problem

Answer 17

This type of failure would be due to causes such as

improper bending radius or a clamped cable

Question 18

Construction-Related fiber problem

Answer 18

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

Question 19

This
connector offers a good balance between
loss and reflections and is the most
commonly used connector.

Answer 19

Standard Connector (SC)

Question 20

This connector provides a notch-push and
screw-on connection. It is less frequently used but will be seen in some
installations.

Answer 20

Ferruled Connector (FC)

Question 21

This connector has a flat cut on the end of
the fiber and any reflections may be directed back to the source. It provides
the 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 degrees
on the end of the fiber. The loss is low, but any reflections may be directed
back 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 a
new 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 the
greatest loss?

Answer 24

Cable.

Question 25

What do we call a device in the CATV distribution that has a gain between its
input 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 cascade
progresses.

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 system
specification. Tilt is linier in nature starting at the lowest frequency and gains as frequency
increases.

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 in
the network. All subsequent measurements will be taken relative to that point. Typically used at
the 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 and
their levels.

Answer 31

Directional Couplers

Question 32

Any sweep response that falls within peak to valley limits and which matches the point of
normalization 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 designated
injection 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 measuring
device 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.