What is context switching?

Correct Answer: Fragmentation occurs in a dynamic memory allocation system when many of the free blocks are too small to satisfy any request

Correct Answer: Absolute path-- Exact path from root directory Relative path-- Relative to the current path

Correct Answer: Hard real-time systems required to complete a critical task within a guaranteed amount of time Soft real-time computing requires that critical processes receive priority over less fortunate ones

Correct Answer: In order to protect the operating systems and the system programs from the malfunctioning programs the two mode operations were evolved System mode User mode

Correct Answer: The process of packaging and sending interface method parameters across thread or process boundaries

Correct Answer: DRAM is not the best, but it?s cheap, does the job, and is available almost everywhere you look DRAM data resides in a cell made of a capacitor and a transistor The capacitor tends to lose data unless it?s recharged every couple of milliseconds, and this recharging tends to slow down the performance of DRAM compared to speedier RAM types

Correct Answer: Waiting state

Correct Answer: Main memory - only large storage media that the CPU can access directly Secondary storage - extension of main memory that provides large nonvolatile storage capacity

Correct Answer: A situation, where several processes access and manipulate the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place, is called race condition To guard against the race condition we need to ensure that only one process at a time can be manipulating the same data The technique we use for this is called process synchronization

Correct Answer: An interpreter reads one instruction at a time and carries out the actions implied by that instruction It does not perform any translation But a compiler translates the entire instructions