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Define rotational latency and disk bandwidth.
Rotational latency is the additional time waiting for the disk to rotate the wanted sector to the disk head. The disk bandwidth is the total number of bytes transmitted, separated by the time among the first request for service and the completion of the last transfer.
Compare 2 different operating systems.
What is reference string We evaluate an algorithm by running it on a definite string of memory reference and computing the number of page faults. The string of memory reference
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
how it is work.
There is a process bloacked by a semaphore and no other process in the ready queue, can the blocked process get back to the ready queue without the semsignal() function?
Which android version is available till now
scheduling
Question: (a) Modern processors operate in one of two modes: one for the operating system and one for applications. What is the purpose of having these two modes? What are
Construct a process tree similar to Figure 1. Look up the Linux command pstree -p and describe what it does. Then type in the command the capture the output.
Q. What is the use of system programs? Answer: System programs are able to be thought of as bundles of useful system calls. They provide fundamental functionality to users so
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