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Explain how protection is provided for the hardware resources by the operating system.
Dual mode operation
1. User mode - Implementation done on behalf of a user.
2. Monitor mode (also kernel mode or system mode) - Implementation done on behalf of operating system.
We are faced with three major components of the page-fault service time. 1. Service the page-fault interrupts. 2. Read in the page. 3. Restart the processes.
CONTROL PROGRAMS Control Programs are those programs which control & maintain the operation of computer. They provide basic facilities. Control program are further divided into
Describe the technique of packing. The physical record size will not accurately match the length of the desired logical record and the Logical records may even differ in length
Q. What is the use of system programs? Answer: System programs are able to be thought of as bundles of useful system calls. They provide fundamental functionality to users so
Question 1 What is a message passing system? Discuss the desirable features of a message passing system Question 2 Discuss the implementation of RPC Mechanism in detail Q
Which are the different states of a process? Different status of a process is: New: When the process is created. Running: When instructions are executed. Wait
Describe the following allocation algorithms: a. First fit b. Best fit c. Worst fit a. First-fit: search the list of available memory and all
What are the benefits of thread pools:- The benefits of thread pools are 1. It is usually faster to service a request with an existing thread than waiting to make a thread.
What are race conditions? Race conditions are problems that take place due to the sharing of the same file by several processes. In such a case none of the processes is able to
Q. How would utilize of a RAM disk affect your selection of a disk-scheduling algorithm? What factors would you require to consider? Do the similar considerations apply to hard-di
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