Please help me complete

1. IF vou wanted to add these four files to one Linux directory (October.doc, OCTober.doc, OCTOBER.doc, and OcTOBer.doc), how many new file would be displayed: one, two, three, or four? Explain why this is so. Do you think the answer is the same for all operating systems? Why or why not? 2. By examining permissions for each of the following files, identify if it is a file or directory, and describe the access allowed to the world, user, and group. Also give arn example when you think these permissions would make sense a.rwx--r-X b. drwx- d, dr-x r-x 3. Linux uses an LRU algorithm to manage memory. Suppose there is another page replacement algorithm called not frequently used (NFU) that gives each page its own counter that is incremented with each clock cycle. In this way, each counter tracks the frequency of page use, and the page with the lowest counter is swapped out when paging is necessary. In your opinion, how do these two algorithms compare? Explain which one would work under normal use, and define how you perceive "normal use