Mobile Computing - Jun 2015

Computer Engineering (Semester 7)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 1 (a) Discuss data services in GPRS. Describe applications suitable for GPRS.(7 marks) 1 (b) Describe MMS in detail.(7 marks) 2 (a) Explain Wireless LAN standards and Wireless LAN architecture.(7 marks) 2 (b) Explain architecture of Mobile Computing and also discuss security issues in Mobile Computing.(7 marks) 2 (c) Explain: Blue tooth and RFID.(7 marks) 3 (a) How does the Mobile IP work? Explain its architecture.(7 marks) 3 (b) Explain call routing in the context of GPRS networks.(7 marks) 3 (c) Explain in detail Direct Sequence Spread Spectrum (DSSS).(7 marks) 3 (d) Explain Mobile Computing over SMS. Also explain pull and push SMS.(7 marks) 4 (a) Describe symmetric key cryptography and public key cryptography.(7 marks) 4 (b) Explain: Indirect TCP and Mobile TCP.(7 marks) 4 (c) What is Walsh function? Explain it for CDMA orthogonal codes.(7 marks) 4 (d) Describe the contrast between 3G and Wi-Fi technologies.(7 marks) 5 (a) Describe IPV6 in detail.(7 marks) 5 (b) Discuss Billing and Charging in GPRS network.(7 marks) 5 (c) Explain snooping TCP and mobile TCP.(7 marks) 5 (d) Explain three tier architecture of Mobile Computing.(7 marks)