U5 L3 Telecommunications Transmission Methods

Question 1

What is the transmitter as a basic element of telecomm?

Answer 1

• modulates info to carrier signal

- broadcasts carrier signal over channel

Question 2

What is the Channel as a basic element of telecomm?

Answer 2

medium btw transmitter and receiver

Question 3

What are the two major types of channels?

Answer 3

• air (radio)

- wiring (cable TV)

Question 4

What is the Receiver as a basic element of telecomm?

Answer 4

• receives carrier signal from channel

- restores info and sends to final destination

Question 5

Is the process of telecomm the same regardless of the channel used? In what way is it different?

Answer 5

• yes

- how info is transmitted and received

Question 6

When the Internet was first introduced, what was the only way to access it?

Answer 6

dial-up modems

Question 7

What is the difference in how bandwidth was measured before and now?

Answer 7

B- bits per sec (bps)

N-millions of bits per sec (megabits per sec)

Question 8

What is latency?

Answer 8

time it takes for a signal to get from point to point

Question 9

Why do businesses keep their websites simple and don’t add large images/videos?

Answer 9

no long loading time

Question 10

To compensate for the problem of distance, what do cellular service providers do?

Answer 10

build more towers

Question 11

In electronics, what is a signal?

Answer 11

electric current/electromag field used to transmit data

Question 12

What is transmission media?

Answer 12

physical pathways that connect devices to a network

Question 13

What are the characteristics of the Copper Cable?

Answer 13

P-
-common and inexpensive
-easier to work with
C-
-limited how much data they can carry

Question 14

What are the characteristics of the Fiber Optic Cable?

Answer 14

P-
-transmits data using pulses of light
-highest bandwidth of all comm channels currently available
-most secure
C-
-costly

Question 15

Unlike Copper Cables, Fiber Optics are not affected by what?

Answer 15

Radio interference

Question 16

What are the characteristics of Wireless?

Answer 16

P-
-uses RF, microwave, satellite, infrared signals
-faster and cheaper than cables
C-
-provides smallest bandwidth

Question 17

Data storage tech housed in facilities are measured in what rather than square feet?

Answer 17

acres

Question 18

What do the best file sharing services offer?

Answer 18

• easy usage
• reliable
• secure
• tracks and syncs file versions
• low cost

Question 19

What has the most impact in advancing tech?

Answer 19

consumer demand

Question 20

What are key attitudes to a successful career in telecomm?

Answer 20

• interest in tech
• training
• flexible