Mobile computing assignment number 1

Q1. Explain Hidden & Exposed terminal problem. How MACA avoids these problems?

Q2. What is spread spectrum? How Spreading can be achieved? What are the merits of spread spectrum technique?

Q3.Explain various modulation techniques used in mobile computing.

Q4. Differentiate between:

a) FDMA , CDMA and TDMA

b) FHSS and DSSS

c) Infrastructure and Adhoc network

d) IEEE 802.11a and IEEE 802.11b

e) CDMA and GSM

f) Single cell and Multiple cell Wireless LAN.

Q5. Write a short note on:

a) WML.

b) DECT.

c) WATM networks.

d) Mobile IP.

e) Mobile Agents.

f) PACS.

g) Wired and wireless local loop.

h) Routing protocol in Ad-hoc Network.

i) UMTS