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Determine a critical section is a program segment
Critical section is where shared resources are accessed
The question of fairness, regarding page eviction, is a hard one. How do we decide what is fair? Many operating systems use global LRU, where pages from all processes are managed t
Q. Advantages and disadvantages of multiprogramming? Advantages 1. High CPU utilization. 2. It appears that many programs are allotted CPU almost concurrently. D
Define the DosExecPgm Functions used in the OS/2 DosExecPgm (objBuffer, objLen, flags, cmdLine, env, &resultCode, execName) DosExecPgm function is designed to load an execut
Q. Distinguish among PCS and SCS scheduling. Answer: PCS scheduling is completed local to the process. It is how a thread library schedules threads onto available LWPs. SCS sch
Define Program preemption The Forced de-allocation of the CPU from a program which is executing on the CPU is known as Program preemption
Before proceeding with its execution, every process must obtain all the resources it needs is called Hold and wait
What are the different file operations? Create : - Space for the file in the file system update directory table. Write : - file name and data to be written is
Q. Dynamically loadable kernel modules give elasticity when drivers are added to a system however do they have disadvantages too? Under what situations would a kernel be compiled
Define where a Program generation activity aims Program generation activity aims at Automatic generation of program
Describe the purpose of the checkpoint mechanism. How habitually must checkpoints be performed? Explain how the frequency of checkpoints affects: System performance while no
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