Mobile Computing Question Paper - May 17 - Diploma In Information Technology (Semester 6) - Maharashtra State Board of Technical Education (MSBTE)

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Mobile Computing - S17

Diploma In Information Technology (Semester 6)

Total marks: 100
Total time: 3 Hours INSTRUCTIONS
(1) All Questions are compulsory.
(2) Illustrate your answers with neat sketches wherever necessary.
(3) Figures to the right indicate full marks.
(4) Assume suitable data, if necessary.
(5) Mobile Phone, Pager and any other Electronic Communication devices are not permissible in Examination Hall.
(6) Write any special instructions if any.
(7) Preferably write answers in sequential order.

1. (A) Attempt any THREE of the following :

1.a.i Enlist the mobile computing devices.

(4 marks) 11376

1.a.ii State any four services of GSM.

(4 marks) 11377

1.a.iii Write the steps of Inter-MSC movement of location update procedure.

(4 marks) 11378

1.a.iv Differentiate between symmetric key cryptography & public key cryptography.

(4 marks) 11379

1. (B) Attempt any ONE of the following :

1.b.i Write the steps for HLR failure restoration procedure.

(6 marks) 11380

1.b.ii Write steps to develop a User Interface for login (Assume two textboxes labelled as Username & Password and two buttons labelled as Submit and Cancel).

(6 marks) 11382

2. Attempt any FOUR of the following :

2.a Explain Handoff strategies with neat sketch.

(4 marks) 11422

2.b Explain microcell zone concept briefly.

(4 marks) 11385

2.c Define the following identifiers : (i) MSISDN (ii) IMSI (iii) IMEI (iv) TMSI

(4 marks) 11386

2.d Write algorithm for call origination of VLR overflow with neat sketch.

(4 marks) 11387

2.e State applications and limitations of GPRS.

(4 marks) 11388

2.f Explain RSA algortithm.

(4 marks) 11389

3. Attempt any FOUR of the following :

3.a Explain the techniques for improving coverage and capacity in cellular systems.

(4 marks) 11392

3.b Explain the GSM frame structure.

(4 marks) 11392

3.c Explain VLR Failure Restoration procedure.

(4 marks) 11394

3.d Explain the functions of GPRS support nodes.

(4 marks) 11395

3.e Write features of Android OS.

(4 marks) 11396

3.f Explain UI layouts available in Android environment.

(4 marks) 11397

4. (A) Attempt any THREE of the following :

4.a.1 Explain Co-channel Interference.

(4 marks) 11430

4.a.2 Explain the sequence of events that takes place during PSTN to GSM call.

(4 marks) 11400

4.a.3 Discuss signal processing in GSM.

(4 marks) 11401

4.a.4 Explain the Information Security Attacks.

(4 marks) 11402

4. (B) Attempt any ONE of the following :

4.b.1 Draw and explain GSM channels.

(6 marks) 11404

4.b.2 Explain the life cycle of Android Activity.

(6 marks) 11405

5. Attempt any TWO of the following :

5.a Explain GSM Architecture in detail with neat sketch.

(8 marks) 11409

5.b Explain GPRS Data Services and Bearer Services.

(8 marks) 11410

5.c Explain 3GPP Security and Smart Card Security.

(8 marks) 11411

6. Attempt any FOUR of the following :

6.a Explain the role of Repeaters.

(4 marks) 11412

6.b Describe basic call originating procedure.

(4 marks) 11413

6.c Explain the functions of HLR and VLR.

(4 marks) 11414

6.d Explain the events when GSM location update takes place.

(4 marks) 11415

6.e Explain advantages and disadvantages of 4G.

(4 marks) 11416

6.f Explain UMTS briefly.

(4 marks) 11417

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