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!
What is the hardware support required to implement paging?
Each operating system has its own techniques for storing page tables. The majority allocates a page table for each process and a pointer to the page table is stored with the other register values in the process control block.
The hardware execution of the page table can be done in several ways. In the simplest case the page table is executing as a set of dedicated registers. These registers must be built with very high-speed logic to make the paging-address translation efficient.
The use of registers for the page table is adequate if the page table is reasonably small. For other cases the page table is kept in main memory also a page table base register (PTBR) points to the page table. Changing page tables needs changing only one register substantially reducing context-switch time.
Though the standard solution to this problem is to use a fast-lookup, special, small hardware cache called translation look-aside buffer (TLB). The TLB is an associative high speed memory. Every entry in the TLB consists of 2 parts: a value and a key. Only some TLB's stores address-space identifiers (ASID's) in an every entry of the TLB. An ASID uniquely identifies every process and is used to provide address space protection for that process. While TLB attempts to resolve virtual page numbers, it makes sure the ASID for the currently running process matches the ASID associated with the virtual page.
What is an operating system and what are the different types of operating systems? Operating System An Operating System or OS is a software program that allows the compute
There is a process bloacked by a semaphore and no other process in the ready queue, can the blocked process get back to the ready queue without the semsignal() function?
Define a public key encryption system Allows just the correct receiver to decode the data
with the aid of diagrams describe the following os structures monolithic , layered, client server
What are the multithreading models? There are three models:- a) Many-to-One model b) One-to-One model c) Many-to-Many model
What are the differences between process and thread? The fundamental difference between a process and a thread is that a process has an entire copy of the program to itself and
What is the use of inter process communication. Inter process communication gives a mechanism to allow the co-operating process to communicate with each other and synchronies t
How Virtual memory is implemented Virtual memory can be implemented along with Segmentation and Paging
What are the different thread levels? There are two broad type of thread implementation: User-Level Threads -- Thread Libraries. Kernel-level Threads -- System Calls.
What are Tree-structured directories We can generalize the directory structure to a tree of arbitrary height. This permits the user to create their own sub directories and to c
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