Question 3 3.1. Explain why system processes need cooperation to carry out their assigned tasks. [5] 3.2. What is Starvation in inter-process communications? Give an example of starvation using two processes A and B that are attempting to access a database as a shared resource to update records. [6] 3.3. What are Point-to-Point channels? Give some example topologies of point-to-point channels. [6] 3.4. Describe Circuit Switching. Outline some advantages and disadvantage of this form of switching. [4] 3.5. Describe the advantages of using Manchester Encoding over Non-Return to Zero (NRZ) Encoding. [4]