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Eeu 5 > Building Telecommunications System > Flashcards

Building Telecommunications System Flashcards

(102 cards)

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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
Basic network topologies:
1 Bus topology 2 Star topology 3 Ring topology
26
Connects each workstation (node) to a single cable trunk. All signals are broadcast to all workstations.
Bus Topology
27
All workstations (nodes) are connected to a central unit called a hub.
Star topology
28
Connects workstation equipment and devices in a point-to-point serial manner in an unbroken circular configuration.
Ring topology
29
Transmission media:
cable connectors
30
- 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
Cable
31
Devices that connect cable to the network device
Connectors
32
types of transition media
Copper wiring Coaxial Cable
33
most common medium through which voice and data usually Has been the principal telecommunications transmission medium.
copper wiring
34
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
Shielded Twisted Pair (STP) Wiring
35
Consists of multiple pairs of twisted insulated copper conductors bound in a single sheath.
Unshielded Twisted Pair (UTP) Wiring
36
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.
American Wire Gauge (AWG)
37
Twisted pairs in Copper Wiring:
Shielded Twisted Pair (STP) Wiring Unshielded Twisted Pair (UTP) Wiring American Wire Gauge (AWG)
38
Has two conductors: an inner solid wire surrounded by an outer braided metal sheath; The conductors both run concentrically along the same axis
Coaxial Cable
39
an outer sheathing
jacket
40
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).
Thin coaxial cable
41
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)
Thick coaxial cable
42
A type of coax cable with an additional outer copper braid insulated from signal carrying conductors
Triax cable
43
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).
Twin axial cable (Twinax)
44
_____ is very effective at carrying many analog Signals at high frequencies.
Coaxial cable
45
coaxial cables;
thin coaxial cable thick coaxial cable triax cable twin axial cable
46
The most common type of connector used with coaxial cables.
Bayonet Neil-Concelman (BNC) Connector
47
Are long, thin strands of very pure silicon glass or plastic about the diameter of a human hair.
optical fibers
48
Elements of a Single Optic Fiber
core cladding buffer coating
49
thin glass center of the fiber where the light travels
core
50
outer material surrounding the core that reflects the light back into the core
cladding
51
plastic coating that protects the fiber from damage and moisture
buffer coating
52
Bundles that are consist of hundreds or thousands of optical fibers
optical cables
53
types of optic cables
ST connectors SC connectors
54
A barrel shaped, similar to a BNC connector.
ST Connectors
55
Has a squared face and is easier to connect in a confined space
SC connectors
56
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.
Optical Receiver
57
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.
Optical regenerator
58
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
Optical Regenerator
59
Term used to describe telecommunications in which electromagnetic waves carry the signal
wireless
60
forms of Wireless Communications
Microwave synchronous satellites low-earth-orbit satellites Cellular Personal communications service (PCS)
61
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.
Fixed Wireless Network
62
Has a wavelength of 650 nm which consists of a number of computers, each equipped with a wireless networking interface card
peer-to-peer
63
types of wireless networks
peer-to-peer access point or base station
64
Has a computer or receiver that serves as the point at which the network is accessed
Access point or base station
65
The use of technology in devices or systems that convey data through infrared radiation.
Infrared
66
Uses radio waves to send and receive information, similar to a garage door opener, baby monitor, walkie-talkie, or portable phone.
Radio Frequency
67
There must be a visually unobstructed straight-line path through space between the transmitter (source) and receiver (destination).
Lign-of sight mode
68
Where the system can function when the source and destination are not directly visible to each other.
Diffuse mode
69
WIFI:
Wireless fidelity
70
WLAN means
wireless local area network
71
A manner wherein a telecommunication signal is affected due to a telecommunication cable placed within an electromagnetic field.
Electromagnetic interference
72
is the medium through which voice and data move from one telecommunication device to another.
Telecommunication cabling
73
a passageway, and thus a path, for cable to travel when interconnecting devices, components, and equipment in telecommunication system
Pathways
74
A generic term used to describe a main pathway or cabling media that interconnects a number of telecommunication devices
backbone
75
the cabling, devices, and equipment that integrate the voice, data, video, and electronic management systems of a building
Structured Cabling Systems
76
A mounted hardware unit containing an assembly of rows of connecting locations in a communications system,
Patch panel
77
locations in a communications system
ports
78
receptacle that is a specific place for physically connecting a device or piece of equipment to another.
port
79
a cable that is used to create a connection from one port in a patch panel to another port.
patch cord
80
- 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
Backbone Pathway
81
o building’s Backbone pathway consist of:
Backbone cables. Intermediate and main cross-connects. Mechanical terminations. Patch cords
82
The most commonly used horizontal pathway consists of cable bundles run from the telecommunications closet along ___ or ____ suspended above a plenum ceiling
J-hooks or cable trays
83
extends from the work area (workstation) outlet to the telecommunications closet and consists of horizontal cabling, telecommunications outlet, table terminations, and cross-connections
Horizontal cabling system
84
the space containing work Station (terminal), equipment and components.
work area
85
allows a homeowner to integrate the control and management of the subsystems
communication subsystem entertainment subsystem home office subsystem environmental control/ energy management subsystem security/property protection subsystem
86
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.
work area wiring
87
(e.g., intercom, phone, message recording, fax and e-mail)
Communication service
88
An advanced home wiring system is typically consists of three main components:
1 service center 2 universal multiuse outlets 3 high-performance cabling
89
Called the Central hub or distribution center.
service center
90
Also popularly known as data/voice outlet. - Determine the services that are available in that room on which horizontal cable or outlet cable terminates
universal multiuse outlets
91
Several types are used, including CAT 5 UTP copper wire, coaxial cable, and even wireless transmission technologies
High performance cabling
92
93
Pulsating light : _______ Varying amplitude : _____
Digital signaling Digital transmission
94
Conversion of usefiul sound or data intp electrical impulses
Analog transmission
95
Involves a transmission of signals that vary in voltage
Digital transmission
96
Measure of information capacity
Bandwidth
97
Cables that extend from the hub to the terminal wothout splicing other connections
Home runs
98
Chinese used ____
Rockets
99
U.S. standard for wire conductor size applied to copper electrical power and telephone wiring.
American wire gauge
100
U.S. standard for wire conductor size applied to copper electrical power and telephone wiring.
American wire gauge
101
Modes of transmission in fixed wireless systems
Infrared Radio frequency
102
is the cabling and pathways outside of the building and caries telecommunication services to the building these
The interbuilding backbone

Eeu 5 (1 decks)

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