MOBILE COMPUTING MODEL EXAM QUESTION PAPERS

Roll No:

Programme   :  ME Branch           :  Computer Science and Engineering Semester       :  II	Date:      .05.2013 Time:  9.30 am  to 12.30 pm
Course Code:  CS9251 Course Name: MOBILE COMPUTING	Duration : 3 Hours Max. Marks  : 100

                                                                                        

PART-A (10 x 2 = 20 MARKS)

ANSWER ALL THE QUESTIONS

1.	Why do Hidden and Exposed terminal problems arise?
2.	Differentiate Broadcast from Multicast.
3.	Detail the features of MSAT.
4.	How can an efficient routing be made in satellite systes?
5.	When are tuning frequency and frequency considered?
6.	What are the low power states of a blue tooth device?
7.	What is a care of address?
8.	What are the routing metrics in wireless adhoc network?
9.	What is a wireless Telephony application?
10.	List the classes of transaction service of WTP.

PART-B (5 x 16 = 80 MARKS)

ANSWER ALL THE QUESTIONS

11.	(a)	Discuss in detail the Wireless Transaction Protocol.	(16)
		(OR)
	(b)	Discuss in detail the Wireless Session Protocol	(16)
12.	(a)	Explain time division multiple access	(16)
		(OR)
	(b)	Discuss the spread spectrum techniques	(10)
		What is Code Division Multiplexing? Explain.	(6)
13.	(a)	Discuss in detail localization, calling and handover in GSM	(10)
		Explain the types of orbits in satellite system	(6)
		(OR)
	(b)	Explain the GSM system architecture	(12)
		Explain the protocol architecture of DECT	(4)
14.	(a)	Discuss in detail the medium access control mechanism of ICCC 802.11	(16)
		(OR)
	(b)	Explain the information bases and networking of adhoc HIPERLAN.	(8)
		Discuss MAC layer Bluetooth system	(8)
15.	(a)	Describe tunneling and encapsulation in Mobile IP	(8)
		Discuss in detail dynamic source routing	(8)
		(OR)
	(b)	Write short notes on reverse tunneling	(4)
		Explain IP packet delivery, agent advertisement, discovery and registration process in mobile IP	(12)

                                                                      

Roll No:

Programme   :  ME Branch           :  Computer Science and Engineering Semester       :  II	Date:      .05.2013 Time:  9.30 am  to 12.30 pm
Course Code:  CS9251 Course Name: MOBILE COMPUTING	Duration : 3 Hours Max. Marks  : 100

                                                                                       

PART - A (10 x 2 = 20 MARKS)

ANSWER ALL THE QUESTIONS

1.	What is a guard space?
2.	What is CMDA?
3.	List the four possible handover and scenarios in GSM
4.	Define inclination angle and elevation angle
5.	Give the 802.11 PHY frame format using DSS
6.	How mobility is restricted using WLANS?
7.	What could be quick ‘solutions’ and why don’t they work?
8.	What advantages does the use of IPV 6 offer for mobility?
9.	Write the advantages and disadvantages of mobile TCP.
10.	Define fast retransmit.

PART-B (5 x 16 = 80 MARKS)

ANSWER ALL THE QUESTIONS

11.	(a)	What is multiplexing? Explain the different types of multiplexing techniques and state their merits and demerits.	(16)
		(OR)
	(b)	What are the various types of satellites used? Describe their functionalities and also explain the concept of routing, localization and handover in them.	(16)
12.	(a)	Discuss in detail about IEEE 802.11 and its architecture.	(16)
		(OR)
	(b)	Describe in detail about HIPERLAN.	(16)
13.	(a)	Explain the dynamic source routing in Ad-hoc network with an example.	(16)
		(OR)
	(b)	Explain in detail about Mobile ad-hoc networks.	(16)
14.	(a)	What is Indirect TCP? Explain its various pros and cons.	(16)
		(OR)
	(b)	What is traditional TCP? What are the improvements that are made into the classical TCP?
15	(a)	Explain in detail about wireless application protocol and its architecture.	(16)
		(OR)
	(b)	Briefly explain the following:
		(i)            Wireless transport layer security	(8)
		(ii)           Wireless transaction protocol	(8)