What is polling used for? What are the disadvantages of polling? What is a better way to perform the same job?What are the advantages of partitioning a disk, rather than using the entire disk as one partition?”

FINAL EXAM Directions: Thoroughly answer each question. (Hint: Recall the average paper length for the best midterms were 12 pages, double spaced, with examples and clearly written as a summary of sources by the student).

Question 1

What is polling used for? What are the disadvantages of polling? What is a better way to perform the same job?

Question 2

A 1600-pixel by 900-pixel display is generated on a 14-inch (diagonal) monitor.

a. How many dots per inch are displayed on this monitor?

b. What is the size of an individual pixel? Would a 0.26mm pixel resolution

monitor be sufficient for this display?

c. Repeat (a) and (b) for a 1280 × 720 display.”

Question 3

When people describe client–server architecture, they are usually referring to a system in which a large server is serving a client on a PC. With X Window, the reverse is frequently the case. Explain.

Question 4

What are the advantages of partitioning a disk, rather than using the entire disk as one partition?”

Question 5

Describe CPU scheduling.

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