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Eeu 5 > Building Telecommunications System > Flashcards

Building Telecommunications System Flashcards

1
Q

Convey messages from about 700 BCE

A

Carrier pigeons

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2
Q

Where the first long distance communication systems were based on

A

Signals of sound and light

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3
Q

Used in traditional long-distance communication until almost
1800

A

Horse-mounted dispatch riders

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4
Q

Developed an optical telegraph (semaphore) system of Stations built on rooftops or towers that were visible from a great distance in 1793

A

Frenchman Claude Chappe

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5
Q

Developed another type of optical telegraph system with ten collapsible iron shutters, which when placed in various positions formed combinations of numbers that were translated into letters, words, or phrases.

A

Swede A, N. Edelcrantz

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6
Q

Transmitted the first practical electrical signal in 1830, by sending electricity through a long set of wires to produce electromagnetism that was used to ring a bell

A

Joseph Henry

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7
Q

Patented the first functional electrical communication system in 1831; the electric telegraph with its system of electrical impulses identified as dots and dashes that eventually became known as Morse Code

A

Samuel Morse

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8
Q

Invented an electrical speech machine that transmitted voice over wires and became known as the telephone

A

Alexander Graham Bell

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9
Q

On ______, in _______, telephone was invented

A

March 10 1876
Boston, Massachusetts

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10
Q

Italian inventor who demonstrated the first radio transmission in 1895 that was received out of a line of sight (about 2 miles) on the grounds of his family estate in Italy

A

Gugliemo Marconi

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11
Q

Italian physicist who invented a pantelegraph in 1865 for transmitting pictures, the first commercial fax system

A

Giobanni Caselli

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12
Q

first transmission of pictures over telephone wires was publicly demonstrated on ______.

A

May 19, 1924

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13
Q

On January 23, 1926, _______ of Scotland gave the first public demonstration of a mechanical television with images of living human faces, not just outlines or silhouettes

A

John Logie Baird

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14
Q

4 fundamentals of telecommunication systems

A

1 Telecommunication
2 Telecommunication System
3 Transceiver
4 Bandwidth

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15
Q

the transmission, emission, or reception of Signs, signals, writing, images, sounds, or information of any nature by wire, radio, optical, or other electromagnetic systems

A

Telecommunication

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16
Q

Uses electricity, light (visible and infrared), or radio waves to transmit signals that carry voice and data transmissions.

A

Telecommunication system

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17
Q

a telecommunications device that functions as a transmitter and receiver

A

Transceiver

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18
Q

range between the highest and lowest frequencies of transmission

A

Bandwidth

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19
Q

Bandwidth is measured in ____

A

Hertz (Hz), cycles per second

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20
Q

2 transmission formats:

A

1 Analog Transmission
2 Digital Transmission

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21
Q

The conversion of useful sound or data into electrical impulses

A

Analog transmission

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22
Q

Involves a transmission of a signal that varies in voltage to represent one of two separate states (e.g,., on and off or O and 1).

Offers a rapid method of voice and nonvoice transmission.

A

Digital transmission

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23
Q

Isa collection of communication a equipment and devices that are interconnected so they can communicate in order to share data,
hardware, and software or perform an electronic function

A

Telecommunication network

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24
Q

Describes the;

  • configuration of a network, including its nodes, connecting cables and equipment
  • manner in which the cable is run to individual workstations on the network.
A

Topology

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25
Q

Basic network topologies:

A

1 Bus topology
2 Star topology
3 Ring topology

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26
Q

Connects each workstation (node) to a single
cable trunk. All signals are broadcast to all workstations.

A

Bus Topology

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27
Q

All workstations (nodes) are connected to a central unit called a hub.

A

Star topology

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28
Q

Connects workstation equipment and devices in a point-to-point serial manner in an unbroken circular configuration.

A

Ring topology

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29
Q

Transmission media:

A

cable
connectors

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30
Q
  • Is the most common medium through which voice and data usually move from one network device to another
  • Serves as the pipeline of a telecommunication system
A

Cable

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31
Q

Devices that connect cable to the network device

A

Connectors

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32
Q

types of transition media

A

Copper wiring
Coaxial Cable

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33
Q

most common medium through which voice and data usually Has been the principal telecommunications transmission medium.

A

copper wiring

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34
Q

A twisted pair is enclosed in a shield. An outer covering or shield is added to the ordinary twisted pair wires; the shield functions as a ground

A

Shielded Twisted Pair (STP) Wiring

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35
Q

Consists of multiple pairs of twisted insulated
copper conductors bound in a single sheath.

A

Unshielded Twisted Pair (UTP) Wiring

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36
Q

U.S. standard for wire conductor size applied to copper electrical power and telephone wiring; The gauge refers to wire thickness: the higher the gauge number, the thinner the wire.

A

American Wire Gauge (AWG)

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37
Q

Twisted pairs in Copper Wiring:

A

Shielded Twisted Pair (STP) Wiring
Unshielded Twisted Pair (UTP) Wiring
American Wire Gauge (AWG)

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38
Q

Has two conductors: an inner solid wire surrounded by an outer braided metal sheath; The conductors both run concentrically along the same axis

A

Coaxial Cable

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39
Q

an outer sheathing

A

jacket

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40
Q

Also referred to as thinnet;
- 10Base2 The 2 refers to the approximate maximum segment length being 200 m (654 ft), but the maximum practical segment length is actually 185 m (605 ft).

A

Thin coaxial cable

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41
Q

Also referred to as thicknet.
- 10Base5 refers to the specifications for thick coaxial cable. The 5 refers to the maximum segment length being 500 m (1635 ft)

A

Thick coaxial cable

42
Q

A type of coax cable with an additional outer copper braid insulated from signal carrying conductors

A

Triax cable

43
Q

A type of communication transmission cable consisting of two center conductors surrounded by an insulating spacer, which in turn is surrounded by a tubular outer conductor (usually a braid, foil, or both).

A

Twin axial cable (Twinax)

44
Q

_____ is very effective at carrying many analog Signals at high frequencies.

A

Coaxial cable

45
Q

coaxial cables;

A

thin coaxial cable
thick coaxial cable
triax cable
twin axial cable

46
Q

The most common type of connector used with coaxial cables.

A

Bayonet Neil-Concelman (BNC) Connector

47
Q

Are long, thin strands of very pure silicon glass or plastic about the diameter of a human hair.

A

optical fibers

48
Q

Elements of a Single Optic Fiber

A

core
cladding
buffer coating

49
Q

thin glass center of the fiber where the
light travels

A

core

50
Q

outer material surrounding the core that reflects the light back into the core

A

cladding

51
Q

plastic coating that protects
the fiber from damage and moisture

A

buffer coating

52
Q

Bundles that are consist of hundreds or thousands of optical fibers

A

optical cables

53
Q

types of optic cables

A

ST connectors
SC connectors

54
Q

A barrel shaped, similar to a BNC
connector.

A

ST Connectors

55
Q

Has a squared face and is easier to connect in a confined space

A

SC connectors

56
Q

Decodes the signal and receives the light signal.

Uses a photocell or photodiode to detect the light signal, decodes it, and sends an electrical signal to a computer, TV, or telephone.

A

Optical Receiver

57
Q

Needed over long distances to boost the light
signal.

One or more optical regenerators may be spliced
along a long cable to amplify the degraded light
signal.

A

Optical regenerator

58
Q

Needed over long distances to boost the light
signal.

One or more optical regenerators may be spliced
along a long cable to amplify the degraded light
signa

A

Optical Regenerator

59
Q

Term used to describe telecommunications in which electromagnetic waves carry the signal

A

wireless

60
Q

forms of Wireless Communications

A

Microwave
synchronous satellites
low-earth-orbit satellites
Cellular
Personal communications service (PCS)

61
Q

The operation of wireless devices or systems in homes and offices, and in particular, equipment connected to the Internet by the use of specialized modems.

A

Fixed Wireless Network

62
Q

Has a wavelength of 650 nm which consists of a number of computers, each equipped with a wireless networking interface card

A

peer-to-peer

63
Q

types of wireless networks

A

peer-to-peer
access point or base station

64
Q

Has a computer or receiver that serves as the point at which the network is accessed

A

Access point or base station

65
Q

The use of technology in devices or systems that convey data through infrared radiation.

A

Infrared

66
Q

Uses radio waves to send and receive information, similar to a garage door opener, baby monitor, walkie-talkie, or portable phone.

A

Radio Frequency

67
Q

There must be a visually unobstructed straight-line path through space between the transmitter (source) and receiver (destination).

A

Lign-of sight mode

68
Q

Where the system can function when the source and destination are not directly visible to each other.

A

Diffuse mode

69
Q

WIFI:

A

Wireless fidelity

70
Q

WLAN means

A

wireless local area network

71
Q

A manner wherein a telecommunication signal is affected due to a telecommunication cable placed within an electromagnetic field.

A

Electromagnetic interference

72
Q

is the medium through which voice and data move from one telecommunication device to another.

A

Telecommunication cabling

73
Q

a passageway, and thus a path, for cable to travel when interconnecting devices, components, and equipment in telecommunication system

A

Pathways

74
Q

A generic term used to describe a main pathway or cabling media that interconnects a number of telecommunication devices

A

backbone

75
Q

the cabling, devices, and equipment that
integrate the voice, data, video, and electronic management systems of a building

A

Structured Cabling Systems

76
Q

A mounted hardware unit containing an assembly of rows of connecting locations in a communications system,

A

Patch panel

77
Q

locations in a communications system

A

ports

78
Q

receptacle that is a specific place for physically connecting a device or piece of equipment to another.

A

port

79
Q

a cable that is used to create a connection from one port in a patch panel to another port.

A

patch cord

80
Q
  • located within a building telecommunications system
  • it connects the entrance facilities /equipment room to the telecommunications closets for cabling that inter connects equipment’s
    and devices in the Space
A

Backbone Pathway

81
Q

o building’s Backbone pathway consist of:

A

Backbone cables.
Intermediate and main cross-connects. Mechanical terminations.
Patch cords

82
Q

The most commonly used horizontal pathway consists of cable bundles run from the telecommunications closet along ___ or ____ suspended above a plenum ceiling

A

J-hooks or cable trays

83
Q

extends from the work area
(workstation) outlet to the telecommunications closet and consists of horizontal cabling, telecommunications outlet, table terminations, and cross-connections

A

Horizontal cabling system

84
Q

the space containing work Station (terminal),
equipment and components.

A

work area

85
Q

allows a homeowner to integrate
the control and management of the subsystems

A

communication subsystem
entertainment subsystem
home office subsystem
environmental control/ energy management subsystem
security/property protection subsystem

86
Q

Designed to be relatively simple to interconnect so that modifications and additions can be easily accomplished. The work area can also be served by a wireless access point.

A

work area wiring

87
Q

(e.g., intercom, phone, message
recording, fax and e-mail)

A

Communication service

88
Q

An advanced home wiring system is typically consists of three main components:

A

1 service center
2 universal multiuse outlets
3 high-performance cabling

89
Q

Called the Central hub or distribution center.

A

service center

90
Q

Also popularly known as data/voice outlet.

  • Determine the services that are available in that room on which horizontal cable or outlet cable terminates
A

universal multiuse outlets

91
Q

Several types are used, including CAT 5 UTP copper wire, coaxial cable, and even wireless transmission technologies

A

High performance cabling

92
Q
A
93
Q

Pulsating light : _______
Varying amplitude : _____

A

Digital signaling
Digital transmission

94
Q

Conversion of usefiul sound or data intp electrical impulses

A

Analog transmission

95
Q

Involves a transmission of signals that vary in voltage

A

Digital transmission

96
Q

Measure of information capacity

A

Bandwidth

97
Q

Cables that extend from the hub to the terminal wothout splicing other connections

A

Home runs

98
Q

Chinese used ____

A

Rockets

99
Q

U.S. standard for wire conductor size applied to
copper electrical power and telephone wiring.

A

American wire gauge

100
Q

U.S. standard for wire conductor size applied to
copper electrical power and telephone wiring.

A

American wire gauge

101
Q

Modes of transmission in fixed wireless systems

A

Infrared
Radio frequency

102
Q

is the cabling and pathways outside of the building and caries telecommunication services to the building these

A

The interbuilding backbone

Eeu 5 (1 decks)

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