Page 187 - DCAP311_DCAP607_WIRELESS_NETWORKS

Unit 11: Wireless WAN

Satellites: An artificial body placed in orbit around the earth or another planet in order to collect Notes
information or for communication.
Short Message Service: It is a technology that enables the sending and receiving of messages
between mobile phones.
Virtual Private Network (VPN): A virtual private network (VPN) is a network that uses a public
telecommunication infrastructure, such as the Internet, to provide remote offices or individual
users with secure access to their organization’s network.

Wide Area Network(WAN): A Wide Area Network (WAN) is a communication network made
up of computers that are non-local to one another, exchanging data across a wide area or great
distance.

11.6 Review Questions

1. Define WAN.
2. Do you think that a LAN can also become a WAN? If yes, give reason with example.
3. What is Packet Radio WANs?
4. Discuss the types of Antennae.

5. Explain Cellular Digital Packet Data (CFPD).
6. Highlight the uses of cellular system.
7. Write brief note on Space-based Wireless WANs.
8. Describe Meteor burst communications.
9. “Person-to-person text messaging is the most commonly used SMS application.” Elucidate.

10. Explain some common SMS alert and notification applications.

Answers: Self-Assessment

1. True 2. False
3. True 4. False
5. False 6. Radio Waves

7. Frequency Reuse 8. Cell
9. Satellites 10. LEO
11. False 12. True
13. True 14. True
15. False

11.7 Further Readings

Books Glisic, Savo & Lorenzo, Beatriz (2009). “Advanced Wireless Networks: Cognitive,
Cooperative & Opportunistic 4G Technology.” John Wiley & Sons.

Rackley, Steve (2011). “Wireless Networking Technology: From Principles to
Successful Implementation.” Elsevier.

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