Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
Construct a shift register from S-R flip-flops. Explain its working. Ans: S-R Flip-Flop Shift Register: Shift registers can be built through using SR flip-flops. Fig.(a)
Interrupt handling: Handling Interrupts Several situations where the processor should avoid interrupt requests Interrupt-enable Interrupt-disable Typical
Q. How to Changing the Directory in DOS? You can change the directory. After changing the directory, the new directory becomes the default directory. For example, you change th
Differentiate concurrent and parallel executions ? The words "parallel "and "concurrent" are often used interchangeably, however they are different. Parallel execution is connec
Paged virtual memory: Mostly all implementations of virtual memory divide the virtual address space of an application program into pages; a page is a block that contains conti
A) Execute a program where an ellipse follows the perimeter of the window. B) Execute a program that can draw graphs, possibly following your plan from last week. Have it graph
What are the drawbacks of Electronic Data Interchange processes? Disadvantages of EDI processes are given below: 1. The X12 standard is so huge and general 2. Electron
What is DRAM? What do you understand by DRAM refreshing? With the help of a block diagram, demonstrate how DRAM can be interfaced to a microprocessor. Dynamic RAM (DRAM) is bas
Why disable statements are not allowed in functions? If disble statement is used in function,it invalids function and its return value. So disable statements aren't
What format should my database be saved in to allow different versions of Microsoft Access to open the database? Ans) MS Access is not backwards compatible. To share tables amon
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd