Question: Q.4.1 Discuss the relationship amongst the following basic file elements: (10) Field. Record. File. Database. Directory. Q.4.2 Briefly discuss direct access contrast with sequential

Q.4.1 Discuss the relationship amongst the following basic file elements: (10) Field. Record. File. Database. Directory. Q.4.2 Briefly discuss direct access contrast with sequential

Q.4.1 Discuss the relationship amongst the following basic file elements: (10) Field. Record. File. Database. Directory. Q.4.2 Briefly discuss direct access contrast with sequential access. Use examples in your answer. Q.4.3 Consider the following file name: OPSY 511.doc Indicate whether the above file name is valid within the different operating systems below. Only write a number and your answer (Valid/Not valid), e.g. (a) Valid Operating System Valid / Not valid Android (a) Linux (Ubuntu) (b) Mac OS (c) UNIX (d) Windows (e) Q.4.4 Discuss file management including four tasks that it must perform to carry out its responsibilities. Use examples in your answer. (5) (5) (10) Question 5 (Marks: 30) Q.5.1 Discuss the role of the interrupt handler when the operating system detects an error that is not recoverable. (8) Q.5.2 Consider the following for jobs in First-come, first-serve (FCFS) scheduling algorithm: (7) Job R has a run of 10 milliseconds (ms) Job S has a runtime of 3 ms Job T has a runtime of 4 ms Job U has a runtime of 2ms Assume that all four jobs arrive in very quick succession (almost simultaneously at Time 0) Calculate the average turnaround time. Show your calculation. Q.5.3 Refer to the figure below and answer the question that follows: (7) Resource AM Process 3 Resource BM Using a suitable example, explain the issue of deadlock Your explanation must refer to the figure above. Q.5.4 Using an example, explain the extreme care of indefinite postponement, starvation. END OF PAPER (8)

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