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2016 Jeremy > cct5 > Flashcards

cct5 Flashcards

1
Q

A detailed, thorough analysis of all ofthe features currently existing at a customer site.

A

Site Survey

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2
Q

Known as NFPA 70, this is a standard for the safe installation of electrical wiring and equipment. It is part of the National Fire Codes series published by the National Fire Protection Association (NFPA).

A

National Electrical Code (NEC)

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3
Q

The process of determining the route of cable through a building.

A

Installing Pathways

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4
Q

The vertical and horizontal route of the telecommunications cable.

A

Pathway

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5
Q

Cable and connecting hardware that interconnectsbetween telecommunications rooms,equipment rooms, and entrance facilities.

A

Backbone Cable

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6
Q

A panel (e.g., wood or metal)used for mounting connecting hardware andequipment.

A

Backboard

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7
Q

Any enclosed channel designedfor holding wires or cables.

A

Raceway

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8
Q

A tubular rigid or flexible metallicor non-metallic raceway through whichcables can be pulled.

A

Conduit

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9
Q

True or False:Horizontal cables can rest on drop ceilings.

A

False

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10
Q

A support mechanism used to route and support telecommunications cable or power cable. Typically, these are equipped with sides that allow cables to be placed within the sides over its entire length.

A

Cable Trays

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11
Q

Wire management ring made of metal or plastic, and shaped like the letter D for routing and supporting distribution cables and/or cross-connections on a backboard.

A

D-Ring

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12
Q

A right to use another person’s real estate fora specific purpose. The most common type is the right to travel over another person’s land, known as a right-of-way.

A

Easement

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13
Q

Cable that runs from the telecommunications room to a device. It may be installed in either a horizontal or vertical plane.

A

Horizontal Cable

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14
Q

Association that writes and administers the NationalElectrical Code.

A

NFPA (National Fire Protection Association)

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15
Q

A designated area used for transport ofenvironmental air as part of the air distribution system.Because it is part of the air distribution system, cablesinstalled in this space require a higher fire rating.

A

Plenum

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16
Q

Cable that is run in the plenum spaces ofbuildings.

A

Plenum Cable

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17
Q

Group of computers that communicate as if they were attached to the same wire, regardless of their physicallocation.

A

VLAN (Virtual Local Area Network)

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18
Q

Has the same attributes as a physical LAN, but allows for computers to be grouped together even if they are notlocated on the same LAN.

A

VLAN (Virtual Local Area Network)

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19
Q

A broadcast domain created by switches.

A

VLAN (Virtual Local Area Network)

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20
Q

When a groups of users need to be on the same broadcast domain because they are running the same applications, what can a customer’s IT vendor implement?

A

VLAN (Virtual Local Area Network)

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21
Q

• Employees of a company use this to connect from a remote location into their office. This can be useful when employees are traveling or are a telecommuter.

A

VPN (Virtual Private Network)

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22
Q

Why not just subnet the network instead of using VLAN’s?

A

With a VLAN, devices in different physical locations can be on the same local area network.

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23
Q

If a company has locations that they wish to join in a single private network, they can create an this type of VPN to connect LAN to LAN.

A

Intranet-based VPN

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24
Q

When a company has a close relationship with another company, they can build an this type of VPN that connects LAN to LAN.

A

Extranet-based VPN

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25
Q

Most VPNs rely on this to create a private network that reaches across the Internet. This is the process of placing an entire packet within another packet and sending it over a network.

A

Tunneling

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26
Q

A large business is any business with greater than how many users?

A

50 users

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27
Q

A device that provides hotel management with the ability to monitor the network and directs the user to the hotel’s designated first page/splash screen.

A

IP3 Net Server

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28
Q

Also known as a channel deletion filter, this device deletes unused channel and inserts local feed for subscription channel.

A

Notch Filter

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29
Q

This happens when a TV signal (of the same frequency and video content) arrives at a receiver just before, or just after, the desired TV signal.

A

Ghosting

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30
Q

This is the ghosting type that appears to the left of the picture.

A

Following Ghost

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31
Q

This is the ghosting type that appears to the right of the picture.

A

Leading Ghost

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32
Q

This is caused in one channel by the carrier from another transmitter operating on the same channel.

A

Co-channel Interference

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33
Q

A method of reception using an RF current of the proper magnitude and phase relation so the received voltage is of the same nature as the original wave.

A

Zero Beat

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34
Q

Ingress from transmitters operating in the upstream frequency bandwidth with the majority of ingress entering the system between the tap and the customer’s TV set.

A

Return Path Interference

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35
Q

At any temperature above absolute zero, this is caused by random electron activity of the atoms that make up the conductor, resistor, or any part of the passive circuit in question.

A

Thermal Noise

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36
Q

Change in “termination noise” amounts to approximately ___ dB per 20 degree Fahrenheit change in temperature.

A

0.17 dB

37
Q

In cable TV, we use ___ degrees Fahrenheit (293.15 degrees Kelvin) as our temperature of reference.

A

68 degrees Fahrenheit

38
Q

Another source of interference that affects the return path, but is not ingress related, is ___..

A

Common Path Distortion (CPD)

39
Q

A chemical change caused by a reaction to oxygen such as rust.

A

Oxidation

40
Q

What are the four types of maps used in cable network design?

A
  1. Base Map2. Strand Map3. Design Map4. Amplifier Schematics or Tree Maps
41
Q

This type of map resembles a street map, complete with features like lakes and rivers, streets, and boundaries.

A

Base Map

42
Q

This type of map shows streets with pole and pedestal locations and includes the span length or footage between these items.

A

Strand Map

43
Q

This type of map shows the locations of the electronic equipment, including the head-end and any hubs, also amplifiers, power supplies, and taps.

A

Design Map

44
Q

This type of map also includes symbols indicating the other service companies using a pole, such as the power company, the telephone company, or both.

A

Strand Map

45
Q

This type of map also shows how the system was designed, including the system signal flow logic, from the head-end to the customers, and the power flow to support the system.

A

Design Map

46
Q

This type of map provides the layout of the system in a condensed form. They typically show how active devices are cascaded and how they connect to the head end, hub, or node. Power supply boundaries are alsonoted.

A

Amplifier Schematic or Tree Map

47
Q

This is the name of a corrected map.

A

As-Built map

48
Q

The numbering system used to catalogue your system maps.

A

Map Grid System

49
Q

Sending AC voltage from two different power supplies, causing a large spark.

A

Bucking Power

50
Q

A low-resistance connection between two points in an electric circuit that forms an alternative path for a portion of the current.

A

Shunt

51
Q

The first priority when installing or replacing a dropis:

A

Safety

52
Q

This compensates for cable non-linearity

A

Equalizer

53
Q

The part of the Optical Fiber that transmits light

A

The Core

54
Q

A “leading” Ghost image is usually due to:

A

Signal Ingress

55
Q

QAM

A

Quadrature Amplitude Modulation

56
Q

This is caused by random electron activity

A

Thermal Noise

57
Q

The most likely system components to cause waveform distortions are:

A

Amplifiers

58
Q

When using a Tone Generator, always:

A

Disconnect from the Tap before use

59
Q

TDR

A

Time Domain Reflectometer

60
Q

CRAN

A

Converged Regional Area Network

61
Q

A Fiber Link System is made up of what three components?

A

Cable, Transmitter, Receiver

62
Q

The wavelengths of light used in Broadband Communications are:

A

1310nm and 1550nm

63
Q

This connects directly to the IP3 server via an Ethernet cable.

A

MPG (MegaPort Gateway)

64
Q

This is a custom Ethernet Network that allows customers to seamlessly link multiple locations together and exchange data up to 1Gb per second.

A

ENS (Ethernet Network Service)

65
Q

Symmetrical dedicated Internet bandwidth that is configurable.

A

Tailored Bandwidth

66
Q

This routing protocol supports multihoming with load balancing for faster, more efficient routing between networks.

A

BGP Routing Protocol

67
Q

Through this connectivity type, any site can send traffic to any other site, within a customer’s network, through a single Ethernet interface.

A

Any-to-any connectivity

68
Q

In general, if the building has wooden exterior siding, you will drill from:

A

Inside to Outside

69
Q

For building with exteriors like brick, shingles, stucco, and tile, try to drill carefully from:

A

Outside to Inside

70
Q

This cable shall be used in vertical shafts and from floor to floor in multistory buildings.

A

CATVR (Riser)

71
Q

This cable shall be suitable for general purpose use with the exception of plenums and risers.

A

CATV (V-Rated)

72
Q

This is installed in each guest room to convert the coaxial signal back to Ethernet over CAT5. It also provides a connector for the coaxial cable thatruns to the television.

A

MPO (MegaPort Outlet)

73
Q

CCT5 stands for:

A

Customer CommTech 5

74
Q

This hospitality device has 6 or 12 cable cards.

A

MDTA

75
Q

This hospitality device has 10 cable cards.

A

Q2Q

76
Q

The most common Multiplexing format for digital television.

A

STDM (Statistical Time Division Multiplexing)

77
Q

This device extracts the MPEG streams into their original format.

A

DEMUX

78
Q

Comcast delivers hospitality video to customers via which type of network?

A

HFC

79
Q

As defined in the MPEG-2 specification, Transport Streams carry a collection of these types of packets.

A

Packetized Elementary Stream (PES) packets.

80
Q

As defined in the MPEG-2 specification, these types of packets contain the video and audio information in addition to time stamps.

A

Packetized Elementary Stream (PES) packets.

81
Q

This multicast RF translation table is important because it lists all the programs that exist in the Transport Stream.

A

PAT (Program Association Table)

82
Q

This multicast RF translation table for a particular program identifies all of the elements associated with that particular program such as video, audio 1, audio 2 and any data.

A

PMT (Program Map Table)

83
Q

This multicast RF translation table handles all of the entitlement control and management messages such as the ability to such as the ability to receive a subscriber only channel such as HBO.

A

CAT (Conditional Access Table)

84
Q

VCTID

A

Virtual Channel Table Identification

85
Q

If a channel map change is being made on a MDTA such as a VCT_ID or muting/inserting channels, it is only necessary to perform which Reboot in the Vecima Networks Web Interface?

A

Reboot MDTA

86
Q

This Status sub menu under Status in a Vecima Networks Web Interface will show the interface information for the device as well as how it’s processing the RF.

A

eCMM Status

87
Q

While in the Vecima Networks Web Interface under Cable Card Diagnostics, this link will show channel encryption and authorization

A

Conditional Access

88
Q

This status page in a Q2Q Vecima Networks Web Interface displays current and historical alarms

A

Alarms

89
Q

The first stop in the troubleshooting process while in the Vecima Networks Web Interface is:

A

Alarms

2016 Jeremy (20 decks)

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