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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.
SPC stands (A) Standard Protocol Control (B) Stored Program Control (C) Signaling and switching Centre (D) Signaling Process Center Ans: SPC repres
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In general what are the two ways in which one can retrieve data from tables? Using Select statements, Database Program.
Op code mnemonics: Instructions (statements) in assembly language are usually very simple, unlike those that in high-level languages. Usually, an opcode is a symbol
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As we already know, HTML (Hypertext Markup Language) is the language we use to create Web documents. Now we will read "Hello World!" As given below:
Software Project Planning In the previous days of computing software costs comprised a small % of overall computer based system cost. In order of magnitude error software cost
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