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!
Write a short note on file organization and access.
There are three methods to access files
The record access method is dependent on the physical medium on which the file is stored. Magnetic tape is sequential by it's extremely nature to read a record you must start at the beginning of the tape and sequentially read every record until you get to the one you want. With disks, obviously random access is possible. It is the same as the difference between audio compact disc and audio cassette. With audio tape you have to begin at the beginning and run the tape forward until you get to the song you want to hear. With compact disc you are able to play the songs in random order or go directly to the track you want to hear.
Though, not only ought to the medium permit for random access to records, however the file itself must support going directly to the record you want to retrieve. This feature of the file is called as file organization.
Explain the steps in deadlock recovery. a) Exterminate off all processes involved - drastic. b) Exterminate off one at a time till deadlock gone - select a victim.
Determine a parser which is a variant of top-down parsing without backtracking Recursive Descend parser is a variant of top-down parsing without backtracking.
Assume that P A , P B and P C are three distinguished program s . When P A is executed, it needs 10 ticks to complete its execution and it forks new processes executing P B at tick
What are the three main activities of an operating system in regard to memory management? Keep track of which parts of memory are now being used and by whom. Decide which pr
Q. More than one disk drive is able to be attached to a SCSI bus. Especially a fast wide SCSI-II bus can be connected to at most 15 disk drives. Remember that this bus has a bandw
what is dual mode operation
What are the benefits of thread pools:- The benefits of thread pools are 1. It is usually faster to service a request with an existing thread than waiting to make a thread.
mention the three problems that mat be caused by wrong initialization and placement of wait() and signal()operations in the use of semaphore
What is a sequential file? A file that is read one record or block or parameter at a time in order, based on a tape model of a file.
whats the problem in two state model ?
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