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 are the five major activities of an operating system in regard to file management? The creation and deletion of files The creation and deletion of directories The s
1. A digitized voice channel is made by digitizing a 7 KHz bandwidth analog signal. The signal is to be sampled twice the highest frequency (two samples per hertz) . Assume each sa
What are the disadvantages of swapping technique used in pre-3BSD UNIX systems? If there is excessively much memory contention, processes are swapped out until sufficient
Question: Concurrency and Synchronization a) Define the following terms: I. Critical section II. Mutual Exclusion III. Deadlock IV. Starvation. b) Name three methods w
Describe the file system architecture. File System Architecture contains the subsequent components:- Device Driver 1 Device Driver 2 Device Driver 3 Basic fi
Deadlock Detection and Recovery It's a method of permitting the system to enter a deadlock state, detect it and then recover. Deadlock detection : Is the process of
Q. Presume that you have coded the deadlock-avoidance safety algorithm as well as now have been asked to implement the deadlock-detection algorithm. Can you do thus by simply usin
See attachemnt
Additional Reference bits algorithm Here we keep an 8-bit byte for every page in memory. At standard intervals the reference bit is shifted by the OS. If a shift register conta
Mention some attractive properties of semaphore? The Semaphores aren't provided by hardware. However they have numerous attractive properties: Machine indep
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