Unit I

Part A.

1. What are the three service domains of GSM?

2. What is Handover?

3. List the four possible handover scenarios in GSM.

4. What are the security services offered by GSM.

5. What is meant by MTC and MOC with respect to localization and calling of GSM?

6. Define GPRS.

7. What are the disadvantages of cellular systems?

8. Distinguish infrastructure and ad-hoc networks?

9. What is meant by GGSN?

10. List out the numbers needed to locate an MS and to address the MS.

11. What is the frequency range of uplink and downlink in GSM network?

12. List the type of wireless networks

13. What are the benefits of using infrared for transmission?

14. What are ad-hoc networks?

15. What are the advantages of WLAN?

16. What are the disadvantages of WLAN?

17. How the physical layer is subdivided in IEEE 802.11 standard?

18. What are the functions of MAC management?

19. What are the services provided by the MAC layer?

20. What do you meant by roaming?.

21. What is Mobility Management?

22. List the features of IEEE 802.11.

23. What are Design Goals of Wireless LAN?

24. What is meant by BSSGP?

25. Distinguish WLAN and WPAN.

26. Give the frame format of IEEE802.11 PHY frame using FHSS.

27. Give the frame format of IEEE802.11 PHY frame using DSSS.

Part B

1. Discuss the advantage and disadvantage of cellular system with small cells.2. Explain the GSM system architecture with a neat diagram.3. Explain the GSM protocol architecture with a neat diagram.4. Explain the GSM Security in detail.5. Explain the various handovers carried out in GSM. 6. Briefly describe the architecture of IEEE 802.11. 7. Explain the MAC layer in IEEE802.11.8. Explain the service offered b y IEEE802.11 standard.9. Explain the architecture of GPRS with a neat diagram.10. Explain the GPRS protocol architecture with a neat diagram.11. Explain the steps involved in the call delivery procedure in GSM network in the following cases:

(i) GSM mobile terminated call (ii) GSM mobile originated call