Module 1: Data Transmission

Question 1

What is data in its raw form?

Answer 1

The information that you input

Question 2

What happens every time you hit send, share, or upload?

Answer 2

You are sending data that you created somewhere out onto the network

Question 3

What is volunteer data?

Answer 3

Data that you offer yourself

Question 4

What does it mean to agree to share volunteer data?

Answer 4

You realize data is being collected about you and you consent to share or store it

Question 5

What is inferred data?

Answer 5

Data that you generate by your activities

Question 6

Give an example of inferred data.

Answer 6

Your credit card usage and the records kept by stores

Question 7

How does inferred data help companies?

Answer 7

It helps them understand your preferences and location

Question 8

What type of data is collected when you use an ATM card?

Answer 8

Inferred data indicating your travel and location

Question 9

What is observed data?

Answer 9

Data collected through tracking your activities, like location services on your phone

Question 10

What does your phone do with location services enabled?

Answer 10

It keeps track of your location and transmits this information to your carrier

Question 11

What term is used to describe large amounts of data stored in the cloud?

Answer 11

Big data

Question 12

True or False: You should be cautious when clicking the share or store buttons on your devices.

Answer 12

True

Question 13

Fill in the blank: Inferred data is generated by your _______.

Answer 13

[activities]

Question 14

What are the two possible values a bit can have?

Answer 14

0 or 1

Question 15

What does the term ‘bit’ stand for?

Answer 15

Binary digit

Question 16

What is the smallest piece of data in computing?

Answer 16

Bit

Question 17

How do humans interpret data compared to computers?

Answer 17

Humans interpret words and pictures; computers interpret patterns of bits

Question 18

What can a bit represent in terms of physical states?

Answer 18

Two discrete states such as magnetization, voltage levels, or light intensity

Question 19

In binary representation, what does the state ‘On’ correspond to?

Answer 19

1

Question 20

In binary representation, what does the state ‘Off’ correspond to?

Answer 20

0

Question 21

How do input devices translate human interaction?

Answer 21

Into binary code for the CPU to process and store

Question 22

What do output devices do with binary data?

Answer 22

Translate it back into a human recognizable form

Question 23

What is the commonly used code for representing characters in binary?

Answer 23

American Standard Code for Information Interchange (ASCII)

Question 24

How many bits represent each character in ASCII?

Answer 24

Eight bits

Question 25

What is the binary representation of the capital letter 'A' in ASCII?

Answer 25

01000001

Question 26

What is the binary representation of the number '9' in ASCII?

Answer 26

00111001

Question 27

What is the binary representation of the special character '#' in ASCII?

Answer 27

00100011

Question 28

What is a group of eight bits called?

Answer 28

Byte

Question 29

What types of information can codes represent digitally?

Answer 29

* Computer data * Graphics * Photos * Voice * Video * Music

Question 30

Fill in the blank: Each group of eight bits is known as a _______.

Answer 30

Byte

Question 31

True or False: Computers use binary codes to represent letters, numbers, and special characters.

Answer 31

True

Question 32

What is the first step in data transmission?

Answer 32

Data is transformed into a series of bits ## Footnote This transformation is essential for sending data across a network.

Question 33

What does 'media' refer to in the context of data transmission?

Answer 33

The physical medium on which the signals are transmitted ## Footnote Examples include copper wire, fiber-optic cable, and electromagnetic waves.

Question 34

What is a signal in data transmission?

Answer 34

Electrical or optical patterns transmitted from one device to another ## Footnote These patterns represent digital bits (the data).

Question 35

What are the three common methods of signal transmission?

Answer 35

* Electrical signals * Optical signals * Wireless signals ## Footnote Each method uses different techniques to transmit data.

Question 36

How are electrical signals transmitted?

Answer 36

By representing data as electrical pulses on copper wire ## Footnote This method is commonly used in homes and small businesses.

Question 37

How are optical signals transmitted?

Answer 37

By converting electrical signals into light pulses ## Footnote This method is often used in fiber-optic communication.

Question 38

How are wireless signals transmitted?

Answer 38

Using infrared, microwave, or radio waves through the air ## Footnote This method allows for wireless communication over distances.

Question 39

What is the typical medium for network signals in most homes?

Answer 39

Copper wires (cables) or Wi-Fi enabled wireless connections ## Footnote These are the most common forms of transmission in residential settings.

Question 40

What medium do larger networks typically use for signal transmission?

Answer 40

Fiber-optic cables ## Footnote These cables can reliably carry signals over longer distances.

Question 41

Fill in the blank: Signals may be converted many times before ultimately reaching the _______.

Answer 41

destination ## Footnote This may occur as the media changes between the source and destination.