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Engineering Utilities 1 > L7- Building Telecommunication System (Part 1) > Flashcards

L7- Building Telecommunication System (Part 1) Flashcards

1
Q

_________ are the means of electronic transmission of information over distances.

A

Telecommunications

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2
Q

The information may be in the form of voice telephone calls, data, text, images, or video. Today, telecommunications are used to organize more or less remote computer systems into ____________. These networks themselves are run by computers.

A

telecommunications networks

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3
Q

It is an arrangement of computing and telecommunications resources for communication of information between distant locations.

A

telecommunications network

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4
Q

A telecommunications includes the following components:
1. __________for accessing the network
2. _______________ that process information and are interconnected by the
network
3. __________________ that form a channel through which
information is transmitted from a sending device to a receiving device.
4. ___________________that facilitates the transmission
of information.
5. ___________________that controls message
transmission over the network.

A
  1. Terminals
  2. Computers
  3. Telecommunications links
  4. Telecommunications equipment
  5. Telecommunications software
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5
Q

The two principal types of telecommunications networks that can be distinguished from the point of view of their geographical scope.

A
  1. Local area networks (LAN)
  2. Wide area networks (WAN)
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6
Q

It is a privately owned network that interconnects processors, usually microcomputers, within a building
or on a campus site that includes several buildings.

A

Local area networks (LAN)

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7
Q

TRUE OR FALSE:
LANs are the principal tool of workgroup computing

A

True

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8
Q

TRUE OR FALSE:
LANs ensure high-speed communication within a limited area and enables the users to share facilities (peripherals) connected to it.

A

True

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9
Q

TRUE OR FALSE:
WANs usually include a large-capacity, secondary storage device, where database and applications software are maintained, managed by a microcomputer acting as a file server that delivers data or program files to other computers.

A

False - LANs

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10
Q

TRUE OR FALSE:
Facilities (peripherals) in a LAN may include jukebox optical memory and fast printers

A

True

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11
Q

TRUE OR FALSE:
Frequently, one of the facilities (peripherals) in a LAN is the gateway hardware and software that give the network users access to other networks.

A

True

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12
Q

TRUE OR FALSE:
Less group members may connect to the network from remote sites using wireless telecommunications in a LAN.

A

False - More group members

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13
Q

TRUE OR FALSE:
Links and equipment of LANs are owned by the user company, and these networks are generally much faster than WANs.

A

True

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14
Q

It is a telecommunications network that covers a large geographical area.

A

Wide area network (WAN)

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15
Q

TRUE OR FALSE:
The information system of an entire organization may be structured as a hierarchy. The WANs system architecture looks very much like an organization chart.

A

True

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16
Q

TRUE OR FALSE:
LANs connect all the divisional minicomputers to the headquarters mainframe with a variety of local microcomputers and terminals located at remote sites connected, in turn, to the minicomputer.

A

False- WANs

17
Q

TRUE OR FALSE:
WANs provide the backbone through which all other nodes (computers and terminals) communicate.

A

True

18
Q

TRUE OR FALSE:
MANs provide the backbone through which all other nodes (computers and terminals) communicate.

A

False- WANs

19
Q

TRUE OR FALSE:
WANs serve to interconnect multiple LANs and can make specific resources available to a large number of workstations.

A

True

20
Q

These are telecommunications networks that interconnect various local area networks within a metropolitan area, that is, within approximately a 50-mile range.

A

Metropolitan Area Networks (MAN)

21
Q

What are the characteristics of MANs?

A

a. Purpose of MANs is to interconnect various LANs within a metropolitan area, that is, within approximately a 50 - mile range.
b. Generally, the speed of MANs is equal to that of LANs and they use similar technology.

22
Q

What are the Characteristics of Interorganizational Information Systems?

A

a. These systems help several firms share information in order to coordinate their work, collaborate on common projects, or sell and buy products and services.
b. Internet has emerged as a global public network of networks
c. Some interorganizational systems are employed in knowledge work
d. Can be used to connect a firm’s computers to the information systems of its customers, suppliers, and business partners, and are also used to execute business transactions.

23
Q

This may be implemented with various
communication media, with a corresponding
variety of characteristics

A

Telecommunications Links

24
Q

The main feature of a medium is its potential transmission speed, also known as ___________, which for data transmission purposes is expressed in bits per second (bps).

A

channel capacity

25
Q

An alternative measure of transmission channel
capacity is ____________ - the range of signal
frequencies that can be transmitted over the
channel

A

bandwidth

26
Q

Six potential transmission media are employed to implement telecommunication links:

A
  1. Twisted pair
  2. Coaxial cable
  3. Fiber Optics cable
  4. Terrestrial Microwave
  5. Satellite Transmission
  6. Radio Transmission
27
Q

Three transmission media are classified as guided media - in which the signal moves along an enclosed path. Guided media require wiring. They include:

A
  1. Twisted pair
  2. Coaxial cable
  3. Fiber optic cable
28
Q

Three transmission media are classified as wireless media - the signal is broadcast (radiated in many directions) over the air or space and received through an antenna. They include:

A
  1. Terrestrial Microwave
  2. Satellite Transmission
  3. Radio Transmission
29
Q

A communications medium consisting
of a pair of wires.

A

Twisted Pair

30
Q

A communications medium that consists of a relatively thick central conductor shielded by several layers of insulation and the second conductor just under the cable’s shell.

A

Coaxial Cable

31
Q

High-capacity communications medium that consists of many strands of pure glass with a data carrying core in the middle, surrounded by a reflective coating and a protective sheath.

A

Fiber Optics

32
Q

Long-distance telecommunications by means of
microwave signals travelling on the surface of the earth.

A

Terrestrial Microwave

33
Q

Form of microwave transmission in which the
signal is transmitted by an earth station
to a satellite which rebroadcasts the
signal to the receiving station

A

Satellite Transmission

Engineering Utilities 1 (7 decks)

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