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CENTRE FOR DEVELOPMENT OF IMAGING TECHNOLOGY (Under Government of Kerala)

CEP EXAMINATION- MAY 2013 Subject: Introduction to Wireless Technology ADCHNE II Register No.

Time: 3 Hours Maximum Marks:100

I. Fill in the blanks. Answer ALL questions.

(10 x 1 = 10)

1. In OSI reference model _______ layer is responsible for logical addressing. 2. TDMA stands for __________ 3. ___________ protects against intruders in air interface. 4. RARP stands for __________ 5. __________ is a well-known technique used to disseminate information across a network. 6. SMTP stands for __________ 7. OSI Reference Model has __________ layers. 8. UMTS stands for __________ 9. A ________is a set of rules that governs the communications between computers on a network. 10. A ___________ is a mathematical scheme for demonstrating the authenticity of a digital message or document. II.Explain briefly. Answer any TEN questions.

(10 x 4 = 40)

1. Write short notes on Authentication protocols. 2. Compare 802.15.4 and 802.15.1. 3. Write a short note on Ad Hoc Network. 4. Explain “Hand-off mechanism”. 5. Differentiate between GSM and CDMA techniques. 6. Explain briefly about major threats on wireless communication system. 7. Explain GAF. 8. Explain the concept of public Key Infrastructure.

Code No.Q13MAY 233

[P.T.O]

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9. What do you know about NAP? 10. What is meant Shared Key Authentication? 11. What are the functions of Transport Layer? 12. Explain briefly about Hybrid Routing. 13. Write a short note on “Bluetooth technology”. III.Answer any FIVE questions. Explain in detail.

(5 x 10 = 50)

1. Briefly explain wireless sensor network? 2. Explain OSI Reference Model. 3. Explain GPRS Architecture in detail. 4. With the help of a neat diagram, explain CSMA/CD. 5. Explain in detail about SMAC protocol and its features. 6. What is Cryptography? Explain Secret key techniques and Public key techniques in detail. 7. Briefly explain Wireless LAN. Give the advantages and disadvantages of Wireless LAN.

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Code No.Q13MAY 233