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medium term schedulingthis is component of the swapping function usually the swapping in decision is based on the need to manage the degree of
long term schedulingscheduling explicitly performed when a new process is created and it determines which programs are admitted to the system for
comparison of disk scheduling algorithmsname description
write a short note on disk scheduling one of the responsibities of operating system os is to use the hardware efficiently whenever a process
write a short note on disk structuremodern disk drives are initiate as large one dimensional array of logical blocks where the logical block is the
look olike scan except stops moving inwards or outwards when no more requests in that direction existc-scan circular scan omoves inwards servicing
scan ogo from the outside to the inside servicing requests and after that back from the outside to the inside servicing requests oreplicate this
sstf shortest seek time first after a demand go to the closest request in the work queue regardless of direction decrease total seek time compared to
fcfs first come first served perform operations in order requestedno reordering of work queue no starvation every demand is serviced poor
describe the technique of packingthe physical record size will not accurately match the length of the desired logical record and the logical records
write in brief on unix file structureunix considers every file to be a sequence of 8-bit bytes no interpretation of these bits is made by the
write short note on compression regarding the file system in windows 2000ntfs is able to perform data compression on individual files or on all data
write short note on recovery regarding the file system in windows 2000in many file systems a power breakdown at the wrong time can damage the file
describe the internal layout of the file system in windows 2000the basic entity in ntfs is a volume and a volume is created by the windows 2000 disk
clustered file organization a clustered file is also called a b-tree-clustered file is a tree-structured file in which records with adjacent index
relative file organization a relative file is an array of fixed-length slots and the records can be inserted in the first free slot found from the
entry-sequenced file organizationthe records in an entry-sequenced file are store up in the order they are written into the file new records are for
logical file systemresponsible for providing the before discussed interface to the user including file access directory operations security and
basic file system uses the specific device driver deals with blocks of data that are exchanged with the physical device concerned with the placement
device driverscommunicates straight with peripheral devices disks tapes etc responsible for begin physical io operations on the device
describe the file system architecturefile system architecture contains the subsequent components- device driver 1 device driver 2device driver 3basic
what are the objectives for a file management systemto meet the data management wants and requirements of the user which embrace storage of data
what is an io subsystemthe control of devices connected to the computer is a main issue while designing operating systems because io deices differ
contiguous allocation every file will be allocated contiguous space in the memory allow the block size be 1k if a 50k files desires to be
how are file sharing and protection implementedto execute file sharing and protection the system have to maintain more file and directory attributes