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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.
Zero address instruction format is used for (A) RISC architecture. (B) CISC architecture. (C) Von-Neuman architecture. (D) Stack-organized architecture.
The result of adding hexadecimal number A6 to 3A is ? Ans. The result will be E0.
Modus ponens rule: In fact the general format for the modus ponens rule is as follows: like if we have a true sentence that states the proposition A implies proposition B and
Why cyclomatic complexity is important? Cyclomatic complexity is computed using a graph that verifies the control flow of the program. The nodes of the graph correspond to the
(a) Consider a sinusoidal signal m(t) = A cos(2πfmt) applied to a delta modulator with step size Δ. Determine the range of the step size so that slope overload will be avoided. Ass
Which interface controls what is shown on the p.c.? Presentation Interface controls what is shown on the p.c
What is Virtual memory The term virtual memory signifies something that appears to be present though actually it is not. Virtual memory technique enables users to use more mem
Q. Explain about Control Memory Organization? One of the simplest ways to organize control memory is to organize micro-instructions for different sub cycles of machine instruct
Discuss in detail about Micro computer A microcomputer's CPU is a microprocessor. The microcomputer was originated in late 1970s. The first microcomputer was built around 8-bit
time to left (TTL) in transport layer
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