Thic of the following statements is INCORRECT in the context of virtual memory?

$($a$)$ The size of the logical address space cannot exceed that of the physical address space.

$($b$)$ It separates user logical memory from physical memory.

$($c$)$ It allows address space sharing between processes.

$($d$)$ Noue of the above.

Which of the following is a benefit of allowing a program that is only partially in memory to

execute?

$($a$)$ Programs can be written to use more memory than is available in physical memory.

$($b$)$ CPU utilization and throughput is increased.

$($c$)$ Less $\frac{1}{O}$ is needed to load or swap each user program into memory.

$($d$)$ All of the above.

Given the following reference string, the FIFO page replacement algorithm will produce

page faults $($Number of pages $=4)$: $54134240324231341541$

$($a$)15$

$($b$)12$

$($c$)10$

$($d$)9$

$($e$)8$

The optimal page replacement

$($a$)$ is the page$-$replacement algorithm most often implemented.

$($b$)$ is used mostly for comparison with other page$-$replacement schemes because it is difficult

to implement.

$($c$)$ requires that the system keeps track of previously used pages.

$($d$)$ None of the above.

Every address generated by the CPU is divided into two parts. They are

$($a$)$ Frame number and page number

$($b$)$ Block number and page offset

$($c$)$ Frame mimker and franc offsct

$($d$)$ Page number and page offset

$($e$)$ None of the above

Physical memory is divided into equally sized parts called

$($a$)$ Blocks

$($b$)$ Frames

$($c$)$ Pages

$($d$)$ None of the above

A new process of size $3069$ bytes is to be loaded into main memory. If the page size is $1024$

bytes, the resulting internal fragmentation is:

$($a$)2$ bytes

$($b$)3$ bytes

$($c$)1021$ bytes

$($d$)3$ pages

$($e$)$ None of the above

External fragmentation occurs when:

$($a$)$ The total memary is not sufficient to accommodate a request,

$($b$)$ Enough tatal memory exists to satisfy a request, but it is not contiguous.

$($c$)$ The fint black of coutiguous free space is not sufficiesit to accommodate a request.

$($d$)$ None of the above