GTU previous year question papers BE- VIIth Sem-Mobile Computing -May/June -2012

GTU previous year question papers

GUJARAT TECHNOLOGICAL UNIVERSITY

BE- VIIth SEMESTER–EXAMINATION – MAY/JUNE- 2012

Subject code: 1    0    02 

Subject Name: Mobile Computing

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Explain the differences between 1G, 2G, 2.5G and 3G mobile communications.

(b) Explain the functioning of cellular network. How the given set of frequencies are

used to increase the capacity of a network.

Q.2 (a) What are the different tiers in three tier architecture of mobile computing?

Describe the functions of these tiers.

(b) Explain the following Multiple Access Techniques used to access the channel by

mobile subscriber.

• Frequency Division Multiple access.

• Space Division Multiple access.

OR

(b) Explain the following Multiple Access Techniques used to access the channel by

mobile subscriber.

• Time Division Multiple access.

• Code Division Multiple access.

Q.3 (a) What is piconet? What is scatternet? Explain how they form in Bluetooth radio

technology? Also give the answer of following questions.

1. Which ISM frequency band it is use?

2. How many maximum channel it is support?

3. How many maximum slave can be communicate with Master at a time?

(b) Differentiate the WiMAX and WiFi Technologies.

OR

Q.3 (a) Explain following protocol used in the Bluetooth technology

1. Link Manager Protocol.

2. Logical Link Control and Adaptation Protocol.

3. Service Discovery protocol.

4. RFCOMM

(b) Explain the three limitations of IPv4 that are overcome by IPv    .

Q.4 (a) What are limitations of traditional IP to support the mobile technology? How

does Mobile IP works?

(b) What are HLR and VLR? Describe its functions in call routing and roaming.

OR

Q.4 (a) Explain the Indirect and Snooping TCP.

(b) What is the difference between SM-MT and SM-MO? Explain.

Q.5 (a) Explain the GPRS system architecture.

(b) Give six functions where CDMA is different from GSM.

OR

Q.5 (a) Explain H.232 framework for voice over IP.

(b) Explain Session Initiation Protocol (SIP).

 

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