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INTRO TO CAREERS IN ARTS, AV TECH AND COMM > U5 L2 Telecommunications Timeline From Telephone To Videoconference > Flashcards

U5 L2 Telecommunications Timeline From Telephone To Videoconference Flashcards

1
Q

What does Radio Frequency use to transmit data to an antenna?

A

alternating current (AC)

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2
Q

What is a form of RF?

A

microwaves

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3
Q

What are microwaves (transmissions) used for?

A
  • transmitting voice and data that has been translated into RF
  • point to point communications
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4
Q

What is the form of a Microwave?

A
  • electromagnetic wavelengths

- range of 1-30 cm

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5
Q

What is a communications satellite?

A

instrument in space to transmit telecom

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6
Q

What is Wireless communication? What does it use?

A
  • telecom using radio signals to transmit info

- RF signals transmitted via routers

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7
Q

Does Wireless communication use password permission?

A

usually

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8
Q

What is mobile communications?

A

enables internet access over a cellular network

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9
Q

What was the first form of electrically transmitted info?

A

telegraph

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10
Q

What were telegraph operators needed to do?

A
  • encode
  • transmit
  • decode messages
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11
Q

Who invented the first telephone?

A

Alexander Graham Bell

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12
Q

What did Telephone operators use to connect cables that enabled the caller to speak with another?

A

switchboards

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13
Q

What are the similarities and differences between Telegraph and Telephone?

A

S-required human operators

D- Telegraph more operators, took longer

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14
Q

In the earliest days of telephone, only who could afford them?

A

wealthy

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15
Q

In the 80s and 90s, the remaining operators mainly provided what?

A

directory assistance

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16
Q

Today the most common employer of telephone operators are who?

A

emergency services (911)

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17
Q

Until the mid-1960s US households had a black phone provided by what company?

A

AT & T

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18
Q

What is the similarity and difference of RF and Microwave Transmission?

A

S- use wireless tech and antennas

D- RF uses AC

19
Q

What is the TCP/IP protocol suite?

A

internet comm protocol using a series of physical and logical layers

20
Q

What did the invention of TCP/IP protocol lead to the invention of?

A

phone modems

21
Q

What are the positive impacts of TCP/IP protocols?

A

-no need to physically transport messages

22
Q

Has the scanner made the fax machine mostly unnecessary?

A

yes

23
Q

When was the WWW invented?

A

1992

24
Q

WWW was based on a govt-based network known as what?

A

ARPANet

25
Q

What was ARPANet originally used to connect?

A

university campuses involved in military research

26
Q

In 1983, what did ARPANet adopt and do?

A

TCP/IP, open access to other org

27
Q

What was one of the first methods to enable online comm using data transmissions?

A

FTP, File Transfer Protocol

28
Q

Connectivity was established through () and required a () between transmitter and receiver

A

modems, string of commands

29
Q

What was connection speed partly determined by?

A
  • type of modem

- protocols established

30
Q

Where is FTP still used today?

A

webpage serves allowing users to upload files on display

31
Q

Why do some people today claim that email is becoming outdated?

A

spam

32
Q

What is telephony?

A

concepts and tech comprising telephone telecomm services

voice, data, VoIP

33
Q

Is VoIP tech always free?

A

no

34
Q

What is communication theory?

A

concepts and rules governing the process of communication

35
Q

How many elements are needed for communication to take place?

A

6

36
Q

What are the 6 elements for communication to take place?

A
  • Source
  • Sender
  • Channel
  • Receiver/Destination
  • Message
  • Feedback

SSCaRM MF

37
Q

What is Channel in terms of an element of communication?

A

way message is sent

38
Q

What is Receiver/Destination in terms of an element of communication?

A

processing info of message (decoding)

39
Q

What is the biggest drawback of communicating through text?

A

lack of nonverbal cues (why emoticons made)

40
Q

What is analog?

A

comm tech that uses physical characteristics of electricity

41
Q

Analog tech transmits info using what?

A

electric pulses

42
Q

What is the best example of Analog communication?

A

human voice

43
Q

Today, do we depend on analog or digital communication?

A

digital

INTRO TO CAREERS IN ARTS, AV TECH AND COMM (24 decks)

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