Q2.Consider the following questions_in_chapter3, but answer only theselectedthree uestions here 20+15+30-65 marks 1. Why cannot we apply media access methods from fixed networks to wireless and mobile networks? With the help of diagrams, explain the following problems in mobile networks: hidden and exposed terminals, and near and far terminals 3. List the names of famous multiple access methods used in wireless and mobile networks 4. What is Demand Assigned Multiple Access (DAMA? Briefly explain DAMA-based reservation algorithms. What is Multiple Access with Collision Avoidance (MACA)? Explain, with diagrams, how it avoids the problems of hidden and exposed terminals. at is CDMA? What are its advantages & disadvantages? Explain it with the help of a numerical example. Provide a detailed comparison of SDMA, TDMA, FDMA, and CDMA. 7. i. With the help of diagrams, explain the following problems in mobile networks: hidden and exposed terminals, and near and far terminals. ii. What is Multiple Access with Collision Avoidance (MACA)? Explain, with diagrams, how it avoids the oblems of hidden and exposed terminals. iii. What is Demand Assigned Multiple Access (DAMA)? Briefly explain DAMA-based reservation algorithms