In a few paragraphs, choose two of the topics below and explain both of them, as well as how they relate to each other. $($do not just give definitions$)$

$1.$ Volatile and non$-$volatile memory hierarchy in a server. Compare capacities, access times and the level in the hierarchy

$2.$ Impact of SSD on the establish computer memory hierarchy structure. Will SSD prevail and replace other memories?

$3.$ The role of cache policies for instructions and data with examples

$4.$ If you would design a computer system how would you organize the virtual memory and why?

$5.$Differences between paging and segmentation and the optimal way of organizing the two schemes.