Chapter 8 - Wireless, Mobile, Communicating, and Mobile Commerce

Question 1

Provide some examples of wireless technologies

Answer 1

Wireless Devices (ex. smartphones)
Wireless Transmission Media (ex. microwave, satellite, radio)

Question 2

What is dematerialization?

Answer 2

The functions of many physical devices are included in one other device (ex. a smartphone can call, text, take picture, etc)

Question 3

What are the key factors of microwaves?

Answer 3

High volume, long distance, line-of-sight (transmitter and receiver are in view of each other) communication

Question 4

What are the 3 types of satellites and explain their functions

Answer 4

GEO - Geostationary Earth Orbit: Few satellites needed for global coverage, most expensive
MEO - Medium Earth Orbit: Move relative to point on earth, less expensive then GEO
LEO - Low Earth Orbit: Large number needed for global coverage, least expensive

Question 5

What is GPS?

Answer 5

Global Positioning Systems: A wireless system that utilizes satellites to enable users to determine their position anywhere on earth
- Uses MEO satellites

Question 6

What is IoS?

Answer 6

Internet over Satellite: A way to access internet without a cable
- Uses GEO satellites
- ex. Starlink

Question 7

What is Radio?

Answer 7

Radio: Uses radio wave frequencies to send data
- Used to connect computers to LANS (ex. wifi and cellular)

Question 8

What is a Rogue Access Point?

Answer 8

Unauthorized access point into a wireless network

Question 9

What is an Evil Twin Attack?

Answer 9

Attacker simulates a wireless access point with the same wireless network name

Question 10

Define Short-Range Wireless Networks and provide an example

Answer 10

Have a range of 30 m or less
- Bluetooth: Creates a small personal area network
- Near-field communications: Has the smallest range of any network and is found in cellphones and credit cards

Question 11

Define Medium-Range Wireless Networks and provide an example

Answer 11

Wireless local area networks (WLAN)
- WIFI: Devices can connect to each other without antennas
- MIFI: A small, portable device that provides users with WIFI
- LIFI: Uses light to transmit data

Question 12

Define Wide-Area Wireless Networks and provide an example

Answer 12

Connect users to the internet over a large geographical space
- Cell phones: provide two way communications over a cellular network
- WiMAX: telecommunications technology for broadband internet access

Question 13

What is IoT?

Answer 13

Internet of Things: A system in which any object has a unique identity and is able to send and receive information over a network