In what way the validity fault handler concludes?

Unix Interview Questions

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65. In what way the validity fault handler concludes?

It sets the valid bit of the page by clearing the modify bit.
It recalculates the process priority.

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Other Interview Questions

• How are devices represented in UNIX?
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• Brief about the directory representation in UNIX
• What are the Unix system calls for I/O?
• How do you change File Access Permissions?
• What are links and symbolic links in UNIX file system?
• What is a FIFO?
• How do you create special files like named pipes and device files?
• Discuss the mount and unmount system calls
• How does the inode map to data block of a file?
• What is a shell?
• Brief about the initial process sequence while the system boots up.
• What are various IDs associated with a process?
• Explain fork() system call.
• Predict the output of the following program code
• Predict the output of the following program code
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• How can a parent and child process communicate?
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• What are the process states in Unix?
• What Happens when you execute a program?
• What Happens when you execute a command?
• What is a Daemon?
• What is 'ps' command for?
• How would you kill a process?
• What is an advantage of executing a process in background?
• How do you execute one program from within another?
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• What is major difference between the Historic Unix and the new BSD release of Unix System V in terms of Memory Management?
• What is the main goal of the Memory Management?
• What is a Map?
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• What is Fork swap?
• What is Expansion swap?
• How the Swapper works?
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• What are the requirements for a swapper to work?
• What are the criteria for choosing a process for swapping into memory from the swap device?
• What are the criteria for choosing a process for swapping out of the memory to the swap device?
• What do you mean by nice value?
• What are conditions on which deadlock can occur while swapping the processes?
• What are conditions for a machine to support Demand Paging?
• What is ‘the principle of locality’?
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• What is the window of the working set of a process?
• What is called a page fault?
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• What are the bits that support the demand paging?
• How the Kernel handles the fork() system call in traditional Unix and in the System V Unix, while swapping?
• Difference between the fork() and vfork() system call?
• What is BSS(Block Started by Symbol)?
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• What are the phases of swapping a page from the memory?
• What is page fault? Its types?
• In what way the Fault Handlers and the Interrupt handlers are different?
• What is validity fault?
• What does the swapping system do if it identifies the illegal page for swapping?
• What are states that the page can be in, after causing a page fault?
• In what way the validity fault handler concludes?
• At what mode the fault handler executes?
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• Is it possible to count number char, line in a file; if so, How?
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• What is redirection?
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