Explain the differences between Multilevel Queue & Multilevel Feedback Queue

What is $$aging$$ in Multilevel Feedback Queue?

Explain $$memory stall$$ and its remedy in multithreaded multicore systems.

From OS perspective each hardware thread appears as what?

Explain Chip multithreading.

Explain the how the following scheduling algorithms discriminate either in favor of or against short processes:

FCFSRRMultilevel feedback queues

Consider the exponential average formula used to predict the length of the next CPU What are the implications of assigning the following values to the parameters used by the algorithm?

$=0$ and $0=100$ milliseconds $=0\mathrm{.}99$ and $0=10$ milliseconds

The following processes are being scheduled using a preemptive, priority$-$based, round robin scheduling algorithm.