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!
Q. Several CPUs provide for more than two modes of operation. What are two probable uses of these multiple modes?
Answer: Although most systems merely distinguish between user and kernel modes some CPUs have supported multiple modes. Multiple modes could be utilized to provide a finer-grained security policy. For instance rather than distinguishing between just user and kernel mode you could distinguish among different types of user mode. Possibly users belonging to the same group could execute each other's code. The machine would depart into a specified mode when one of these users was running code. While the machine was in this mode a member of the group could run code belonging to anyone else in the group.
An additional possibility would be to provide different distinctions within kernel code. For instance a specific mode could allow USB device drivers to run. This would signify that USB devices could be serviced without having to switch to kernel mode thereby essentially allowing USB device drivers to run in a quasi-user/kernel mode.
Recall that condition variables are synchronization primitives that enable threads to wait until a particular condition occurs. Generalizing, the combination of locks and condit
Second-Chance algorithm When a page has been selected, we inspect its reference bit. If the value is 0, we proceed to replace this page. If the reference bit is set to 1, thoug
what if we need the portion from a text based on some keyword. For eg. My file is like below, ------------------------------------------------ Order=[ 1 2 3 4 5 Order=[ 6 7 8 9
explain how indefinite blocking or starvation occurs..
Allocators can also be used to avoid problems with unsafe languages. C and C++ are pervasive, with huge amounts of existing code. They are also memory-unsafe languages, in that the
Scalability : Scalability is the competence of the system to adapt to increased service load. A scalable system will respond more gracefully to increased load than a non-sc
Many-to-One Model (Green Threads) Implementations of the many-to-one model a lot of user threads to one kernel thread permit the application to create any number of threads tha
Write a note on semaphores A semaphore is a tool meant for synchronizing multiple processes trying to access a shared variable. That is a semaphore is used to deal with the cri
what are the objective of operating system assignment
Write a program that will input two numbers from the keyboard and execute each of the signed and unsigned multiply and divide instructions. For each instruction, the program shoul
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd