EXERCISE #1 In multitasking OS, each in multitasking. What must a multitasking OS do in context switching? performs "context switching" to switch from a program to another EXERCISE #2 Are the following statements true or false? (a) A multitasking OS is a time-sharing Os. False time shan, (b) A time-sharing OS is a multitasking Os. True EXERCISE #3 Which of the following types of operating need short-term process scheduling? Select all that apply. For those you do NOT select, explain why it (they) do not need short-term scheduling? (a) Pre-OS (b) Batch system (c) Multi-tasking (d) Time sharing