Question: In the Two - level Model of Multithreading Models if a thread makes a blocking system call what happen. ( 3 marks ) What is

In the Two-level Model of Multithreading Models if a thread makes a blocking system call what happen. (3 marks) What is the benefit of using Thread Pools. (3 marks) One of OS Services is Accounting "Explain in Arabic by your own language" (2 marks) mention one vulnerability of the OS Simple Structure. if possible give me 3 examples each example with 3 processes info; and the 3 examples have the same average waiting time based on FCFS; if not possible explain, if possible give me examples and explain. (3 marks)(7 marks)

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