U5 L2 Telecommunications Timeline From Telephone To Videoconference

Question 1

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

Answer 1

alternating current (AC)

Question 2

What is a form of RF?

Answer 2

microwaves

Question 3

What are microwaves (transmissions) used for?

Answer 3

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

Question 4

What is the form of a Microwave?

Answer 4

• electromagnetic wavelengths

- range of 1-30 cm

Question 5

What is a communications satellite?

Answer 5

instrument in space to transmit telecom

Question 6

What is Wireless communication? What does it use?

Answer 6

• telecom using radio signals to transmit info

- RF signals transmitted via routers

Question 7

Does Wireless communication use password permission?

Answer 7

usually

Question 8

What is mobile communications?

Answer 8

enables internet access over a cellular network

Question 9

What was the first form of electrically transmitted info?

Answer 9

telegraph

Question 10

What were telegraph operators needed to do?

Answer 10

• encode
• transmit
• decode messages

Question 11

Who invented the first telephone?

Answer 11

Alexander Graham Bell

Question 12

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

Answer 12

switchboards

Question 13

What are the similarities and differences between Telegraph and Telephone?

Answer 13

S-required human operators

D- Telegraph more operators, took longer

Question 14

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

Answer 14

wealthy

Question 15

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

Answer 15

directory assistance

Question 16

Today the most common employer of telephone operators are who?

Answer 16

emergency services (911)

Question 17

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

Answer 17

AT & T

Question 18

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

Answer 18

S- use wireless tech and antennas

D- RF uses AC

Question 19

What is the TCP/IP protocol suite?

Answer 19

internet comm protocol using a series of physical and logical layers

Question 20

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

Answer 20

phone modems

Question 21

What are the positive impacts of TCP/IP protocols?

Answer 21

-no need to physically transport messages

Question 22

Has the scanner made the fax machine mostly unnecessary?

Answer 22

yes

Question 23

When was the WWW invented?

Answer 23

1992

Question 24

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

Answer 24

ARPANet

Question 25

What was ARPANet originally used to connect?

Answer 25

university campuses involved in military research

Question 26

In 1983, what did ARPANet adopt and do?

Answer 26

TCP/IP, open access to other org

Question 27

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

Answer 27

FTP, File Transfer Protocol

Question 28

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

Answer 28

modems, string of commands

Question 29

What was connection speed partly determined by?

Answer 29

- type of modem | - protocols established

Question 30

Where is FTP still used today?

Answer 30

webpage serves allowing users to upload files on display

Question 31

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

Answer 31

spam

Question 32

What is telephony?

Answer 32

concepts and tech comprising telephone telecomm services | voice, data, VoIP

Question 33

Is VoIP tech always free?

Answer 33

no

Question 34

What is communication theory?

Answer 34

concepts and rules governing the process of communication

Question 35

How many elements are needed for communication to take place?

Answer 35

6

Question 36

What are the 6 elements for communication to take place?

Answer 36

- Source - Sender - Channel - Receiver/Destination - Message - Feedback SSCaRM MF

Question 37

What is Channel in terms of an element of communication?

Answer 37

way message is sent

Question 38

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

Answer 38

processing info of message (decoding)

Question 39

What is the biggest drawback of communicating through text?

Answer 39

lack of nonverbal cues (why emoticons made)

Question 40

What is analog?

Answer 40

comm tech that uses physical characteristics of electricity

Question 41

Analog tech transmits info using what?

Answer 41

electric pulses

Question 42

What is the best example of Analog communication?

Answer 42

human voice

Question 43

Today, do we depend on analog or digital communication?

Answer 43

digital