Chapter 8

Question 1

Wireless Technolgies

Answer 1

• wireless devices (smartphones)
• Wireless Transmission media (microwave, satellite, radio)
  -Wireless security

Question 2

Three basic types of Telecommunications Satellites

Answer 2

• Geostationary Earth orbit (GEO)
• Middle Earth orbit (MEO)
• Low earth Orbit (LEO)

Question 3

Geostationary Earth Orbit characteristics

Answer 3

use: tv signal
global coverage of earth
longest orbital life most expensive

Question 4

Middle Earth Orbit characteristics

Answer 4

use: Global positioning systems (GPS)
less expensive to build and launch
orbital life (6-12) years

Question 5

Low earth orbit characteristics

Answer 5

use: telephone, internet
many satellites
least expensive to build and launch
shortest orbital life (5 years)

Question 6

Internet over Satellite (IOS)

Answer 6

a way to access internet when cables are too expensive or physically impossible

Question 7

Wireless security

Answer 7

Rogue access point: attacker installed without net admin permission

Evil twin attack: seems to be legitimate but its used by attacker for eavesdropping

Question 8

short, medium, wide range wireless networks

Answer 8

short range: bluetooth, infared

medium range: wifi, hotspot

wide area: cellular (5g), wimax (worldwide interoperability for Microwave Access)

Question 9

Mobile computing

Answer 9

a real time connection between a mobile device and other computing enviornments

Question 10

Mobile commerce

Answer 10

electronic commerce (EC) transactions conducted in a wireless environment, especially via the internet

Question 11

The internet of things

Answer 11

Barcodes, QR codes, radio frequency identification (RFID) tags