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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.
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Write an AWK program which takes the following input file and processes it. $cat data.txt John Do 111-1111 English 90 Maths 80 Alice Do 222-2222 English 90 Maths 90 Chemistry 93
Signify this problem by means of: i. An Entity Relationship model; ii. Relational tables. Pete's Programmers is a firm which supplies part time staff on contract to organisat
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What is computer science
What are conversion routines? Non-standard conversions from present format to sap internal format and vice-versa are executed with so known as conversion routines.
In IP addressing scheme, class used for multicasting is: A class used for multicasting in IP addressing scheme is class D.
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