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Define LRU Page Replacement Algorithm
LRU policy: LRU expands to least currently use. This policy suggests which we re- move a page whose last usage is farthest from current time. For reference string that is: 1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5, we comprise the subsequent page faults.
LRU page replacement In least lately used page replacement algorithm we will replace that page that hasn't been used for the longest period of time. This is similar as an opti
What are the disadvantages of linked allocation? The drawbacks are a. Used only for sequential access of files. b. Direct access is not supported c. Memory space neede
Crumbles Bakery needs to decide how many and what types of cupcakes to make today. Currently, they make two types of cupcakes: chocolate cupcakes and carrot cake cupcakes. Chocolat
Define a state which is not a fundamental process state Answer: Blocked state is not a fundamental process state
Define I/O and CPU Bursts Applications typically to through cycle of CPU bursts and Input/output bursts. Since the CPU sits idle during I/O operations, efficiency is improved
List the task regions in the Spiral model. Customer communication - In this region it is suggested to set up customer communication. Planning - All planning activities
What are the steps followed in testing? i. Unit testing - The individual components are tested in this type of testing. ii. Module testing - Related collection of independen
What are the advantages of Contiguous allocation? The advantages are a. Supports direct access b. Supports sequential access c. Number of disk seeks is minimal.
Q. Polling for an I/O completion is able to waste a large number of CPU cycles if the processor iterates a busy-waiting loop several times before the I/O completes. However if the
Problem: (a) Modern operating systems are interrupt driven. If there are no processes to execute, no I/O devices to service, and no users to whom to respond, an operating syste
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