Module 1: Communication in a connected world

Question 1

What is the Internet?

Answer 1

The Internet is a worldwide collection of interconnected networks, cooperating to exchange information using common standards.

Question 2

How do you refer to small networks such as those found in home offices or small offices?

Answer 2

SOHO

Small Office/Home Office

Question 3

What is volunteered data?

Answer 3

Data that you offered yourself

Question 4

What is inferred data?

Answer 4

Data that are generated by your activities

For example, everytime that you use a credit card, keeps a record, and therefore, if you move about different stores, things are being collected about you.

Question 5

What is observed data?

Answer 5

Data that are being stored live from your devices (for example, smartphone)

Question 6

How many bits is a byte?

Answer 6

8

Question 7

How do computers communicate?

Answer 7

Computers use binary codes to represent and interpret characters with bits

The most common binary code is the American Standard Code for Information Interchange (ASCII)

Question 8

What is media?

Answer 8

The physical medium on which the data is transmitted

Question 9

What are the three most common methods of transmission used in networks?

Answer 9

• Electrical signals
• Optical signals
• Wireless signals

Question 10

In which terms is data transfer discussed?

Answer 10

Bandwidth and throughput

Question 11

What is bandwidth?

Answer 11

Is the capacity of a medium to carry data

Question 12

What is digital bandwidth?

Answer 12

The amount of data that can flow from one place to another in a given amount of time

Question 13

List the common measurements for bandwidth

Answer 13

• Thousands of bits per second (Kbps)
• Millions of bits per second (Mbps)
• Billion of bits per second (Gbps)

Question 14

What is throughput?

Answer 14

Is the measure of the transfer bits across the media over a given period

Question 15

Due to a number of factors, throughput does not usually match the specified bandwidth

List these factors

Answer 15

• The amount of data being sent or received over the connection
• The types of data being transmitted
• The latency created by the number of network devices encountered between source and destination

Question 16

What is latency?

Answer 16

Latency refers to the amount of time, including delays, for data to travel from one given point to another.