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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.
Write a verilog code to swap contents of two registers with and without a temporary register? With temp reg : always @ (posedge clock) begin temp=b; b
Determine the Disadvantages of fact finding - People are usually uncomfortable being watched and may work in a different way - What they are watching may not be represent
Define Random scan/Raster scan displays? Random scan is a method in which the display is made by the electronic beam which is directed only to the points or part of the screen
Some pure object oriented languages are Smalltalk, Eiffel, Java, Sather.
Which language is a platform free language Java language
Companding helps in reducing with respect to signal: (A) Interference (B) Signal overloading (C) Non linearity (D) Quantization noise
State about the multiple inheritance multiple inheritance is shown in Figure. In this, one class is inherited from more than one class.
How does an enumstatement differ from a typedef statement? Typedef statement permits user to define an identifier that would show an exiting data type. The user-defined data
Q. Show the Memory Hierarchy of computer system ? Memory in a computer system is essential for storage and subsequent retrieval of instructions and data. A computer system uses
design modulo 12 up synchronous counter using t flip flop
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