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Data Comm > Lesson 1 > Flashcards

Lesson 1 Flashcards

1
Q

Is the transfer of data or information between a source and a receiver.

A

Data Communication

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2
Q

Transmits the data.

A

Source

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3
Q

Receives the data.

A

Receiver

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4
Q

Are the exchange of data between two devices via some form of transmission medium such as a wire cable.

A

Data communications

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5
Q

Refers to information presented in whatever form is agreed upon by the parties creating and using the data.

A

Data

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6
Q

Information that is stored in digital form.

A

Data

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7
Q

Is defined as knowledge or intelligence

A

Information

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8
Q

Is a set of devices interconnected by media links

A

Network

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9
Q

A global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.

A

Internet

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10
Q

In what year was a proposal submitted to a Scottish magazine that suggested running a communications line between villages?

A

1753

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11
Q

How many wires were the suggested communications line between villages from a proposal submitted to a Scottish magazine?

A

26 parallel wires

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12
Q

What did each wire represent in the proposal that was submitted to a Scottish magazine?

A

Letters of the Alphabet

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13
Q

Who developed an unusual system based on five-by-five matrix representing 25 letters?

A

Carl Friedrich Gauss

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14
Q

Why were there only 25 letters included in Gauss’s system?

A

I and J were combined

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15
Q

When did Gauss develop an unusual system based on a 5x5 matrix?

A

1833

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16
Q

The first successful and practical data communications system.

A

Telegraph

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17
Q

Who invented the Telegraph?

A

Samuel F.B. Morse

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18
Q

When was the Telegraph invented?

A

1832

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19
Q

What were transmitted across the wire of a telegraph?

A

dots and dashes

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20
Q

First practical data communications code.

A

Morse Code

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21
Q

When did Morse secure an American patent for his telegraph?

A

1840

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22
Q

What was the first telegraph line established?

A

“What hath God wrought!”

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23
Q

Places where the first telegraph line was established between

A

Baltimore and Washington D.C

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24
Q

When was the first telegraph line established?

A

1844

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25
Q

When was the first slow-speed telegraph printer invented?

A

1849

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26
Q

When did the first high-speed printers become available?

A

1860

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27
Q

Speed of the first high-speed printers.

A

15-bps

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28
Q

Allowed signals up to six different telegraph machines to be transmitted simultaneously over a single wire.

A

Telegraph Multiplexer

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29
Q

Who invented a telegraph multiplexer?

A

Emile Baudot

30
Q

When was the telegraph multiplexer invented?

A

1874

31
Q

Who invented the telephone?

A

Alexander Graham Bell

32
Q

When was the telephone invented?

A

1876

33
Q

Who succeeded in sending radio telegraph messages?

A

Guglielmo Marconi

34
Q

When did Guglielmo Marconi succeeded in sending radio telegraph messages?

A

1899

35
Q

What allowed the transmission of information across large spans of water?

A

Commercial radio stations

36
Q

When were the first commercial radio stations installed?

A

1920

37
Q

Who developed the first special-purpose computer using electromechanical relay?

A

Bell Laboratories

38
Q

When was the first special-purpose computer using electromechanical relay developed?

A

1940

39
Q

What was the first mass produced electronic computer?

A

UNIVAC

40
Q

Who built the UNIVAC?

A

Remington Rand Corporation

41
Q

When was the UNIVAC mass produced?

A

1951

42
Q

When were batch processing systems replaced by on-line processing systems.

A

1960s

43
Q

When were the microprocessor-controlled microcomputers introduced?

A

1970s

44
Q

When did personal computers became an essential item?

A

1980s

45
Q

When did the AT&T operating tariff allowed only equipment furnished by the same company to be connected to AT&T lines.

A

1968

46
Q

When did the Internet began to evolve at the ARPA?

A

1969

47
Q

Was formed to connect sites around the US.

A

ARPANET

48
Q

When was ARPANET formed to connect sites around the US?

A

1970

49
Q

What does ARPANET stand for?

A

Advanced Research Projects Agency Network

50
Q

When did the World Wide Web became publicly available?

A

1991

51
Q

3 major developments

A

reduced cost and size of terminals, new software systems, competition

52
Q

Information can be ____ or ____.

A

Local or Remote

53
Q

Communication that occurs face to face

A

Local Communication

54
Q

Communication that occurs over a long distance

A

Remote Communication

55
Q

Is any system of computers used to transmit and/or receive information between two or more locations.

A

Data Communication Network

56
Q

Is a set of equipment, transmission media, and procedures that ensures that a specific sequence of events occurs in a network in the proper order to produce the intended results.

A

Network Architecture

57
Q

Primary goal of network

A

to give the users of the network the tools necessary for setting up the network and performing data flow control.

58
Q

General Classifications of network and network protocols

A

Current Networks, Legacy Networks, Legendary Networks

59
Q

Include the most modern and sophisticated networks and protocols available.

A

Current Networks

60
Q

Is the generic name assigned to any old network which is rarely used today.

A

Legacy Networks

61
Q

Is called this when an antiquated network or protocol finally disasppears

A

Legendary Networks

62
Q

Classifications of Computer Networks

A

Broadcast Network, Point-to-point Network

63
Q

All stations and devices on the network share a single communication channel

A

Broadcast Network

64
Q

It only has two stations and no addresses are needed.

A

Point-to-point Network

65
Q

Are set if customs, rules, regulations dealing with formality or precedence.

A

Protocols

66
Q

Are sets of rules governing the orderly exchange of data within the network or a portion of the
network.

A

Data Communication Protocols

67
Q

Refers to the structure or format of the data within the message, which includes sequence in which
the data are sent.

A

Syntax

68
Q

Refers to the meaning of each section of data

A

Semantics

69
Q

Are guidelines that have been generally accepted by the data communication industry

A

Data Communications Standards

70
Q

Data Communication Protocols can either be ____ or ____

A

Connection Oriented or Connectionless

71
Q

Modified definition of Data Communication

A

“Data Communication is the exchange of data (in the form of 0’s and 1’s) between two devices (computers ) via some form of the transmission.”

Data Comm (17 decks)

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