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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.
Arithmetic Pipelines The method of pipelining can be applied to a variety of complex and slow arithmetic operations to speed up the processing time. The pipelines used for arit
Hardware Implementation for signed-magnitude data When multiplication is implemented in digital computer, we change process lightly. Here, in place of providing registe
Suppose you have to develop an error recovery protocol for a link that is unreliable and delay sensitive, which of the following protocol would you choose? (i) Stop & wait.
This covers a number of game playing methods, notably checkers and backgammon because so much good research has been completed on these problems and because so many different metho
State the hardware faults and softwate faults - protection against hardware faults could be to keep backups or use GFS; use of UPS (in case of power loss) and parallel system a
This comes at the complication time, If we give the LOGO option to the compiler, it take a bitmap file (i.e., ) as logo previous to loading the Application.
Question: (a) Program instructions and data are brought into memory first, in order to be executed. Explain how the CPU enables an instruction to be executed? (b) Describe
State about the Internet services Internet services are provided automatically, in many other implementations the certificate is stored on a separate database or token such as
Using each connected device is assigned a time slot whether or not the device has anything to send. (A) WDM (B) FDM
Q. If a plane is in the air also there is a fly flying inside the plane does the plane get heavier when the fly lands? Answer:- It is true that a fly puts weight on a plan
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