The next process to be executed by the CPU is chosen from the ready queue by O a. Scheduler O b. Race condition O c. Process control block O d. 1/0 device O e. Synchronization tools Which one of the following statements about system security is correct? O a. A computer system these days is more secure than when it was run by an operator. O b. A computer system these days does not need an OS. OCA computer running a multiuser OS is more secure than one running a single user OS. O d. A computer that is connected to the internet is less secure than one which is not connected. 28 Which one of the following is not a component of the OS? d out of O a. User Interface Question Ob. Compilers OC System programs Od File System on 29 The purpose of scheduling is to: zed d out of 0. Minimize CPU utilization and Maximize throughput question Ob. Maximize CPU utilization and Minimize throughput O c. Maximize CPU utilization and Minimize turn around time O d. Minimize wait time and Maximize response time For a fixed number of processes, SJF scheduling algorithm: O a. Minimize average turn around time. O b. Maximizes CPU throughput O c. Minimize average waiting time. O d. Only Maximizes CPU throughput and Minimize average response time. O e. Only Minimize average waiting time and Minimize average turn-around time