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Implementing Protection with Virtual Memory - computer architecture:
To enable the operating system to implement protection in the VM system, the HW have to:
I. Support at least 2 modes that denoted whether the running process is a user process (executive process) or an operating system process (kernel/supervisor process).
II. Provide a part ion of the CPU state that a user process may read but not write (includes supervisor mode bit).
o Only operating system process may change page tables. Page tables are held in operating system address space thereby preventing a user procedure from changing them.
o When processes desire to share information in a restricted way, the OS have to assist them.
o The write access bit (in both the TLB and the page table) can be used to limit the sharing to only read sharing.
Q. Which things should microprocessor validate? A microprocessor should validate: Powerful addressing modes More addressing capability More throughput Po
distributed & centralized system in computer network
What will exactly the hide statement do? For displaying the details on secondary lists needs that you have previously stored the contents of the selected line from within the
The Concept of Thread Thread is a chronological flow of control within a process. A process can include one or more threads. Threads have their own register values and program
There are tools to automate the process of SQL Injection into login and other fields. One hacker process, using a one tool, will be to search out a number of weak targets using Goo
Q. Options with DIR in DOS? You can use a number of options with DIR. To get the list of files from any other drive, denote the drive name followed by ':' with DIR. For exam
Expand CPI-C. CPI-C= Common Program Interface Communication.
Give the difference between multiprogramming and multiprocessing. A multiprocessing system is a computer hardware configuration which contains more than one independent proc
SMTP is a Protocol used for transferring message among end user & Mail Server.
project
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