assignment
1. Chapter 9. Question 1Answer the two video case study questions for this assignment. Use an MS Word document with your name, the module number, and title of the assignment on the page. Your answers must be 300-500 words in length, in paragraph form, grammatically sound, and free of spelling errors.2. Chapter 9. Question 21Describe the differences between CSMA/CD and CSMA/CA. Provide one reallife example where CSMA/CD is used. Provide one real life example whereCSMA/CA is used.3. Chapter 10. Question 4Several levels of file access were discussed in this chapter, including read/write, read-only, execute-only, and no access. Assume you maintain adatabase containing confidential patient information and need to restrictUPDATE to only 5 individuals, allow only 15 others to view the database,and disallow any database access to all other users. Which access level wouldyou assign to the 20 individuals in the first two groups and to the remainingusers? For each of the three groups, describe every type of access granted toeach one.4. Chapter 10. Question 8Deadlocks are discussed in Chapter 5. Describe how a DO/S ProcessorManager could attempt to avoid them in a real-life network. Then describehow it could try to recover gracefully if one should occur.5. Chapter 10. Question 14Describe the top 10 critical duties of a network administrator for a distributedoperating system. Identify which level of access would be needed by theadministrator for each duty and explain why.6. Chapter 11. Question 1Imagine that you are the manager of a small business computing center. List atleast three techniques that you would use to convince a busy, reluctant nightoperator to perform regular backups. Explain the best and worst possibletechnique to assure your success.7. Chapter 11. Question 4Describe the advantages and disadvantages of password generator software.Would you recommend the use of such software for your own system? Explainwhy or why not.8. Chapter 11. Question 7Given multi-network access, its not unusual for users to have multipleuser identifications and passwords. How would you manage these multi-password situations? Describe both the advantages and disadvantages ofyour solution.9. Chapter 12. Question 6Review the system with one CPU and four drives below: CPU W = 4 ms (the average time to execute 1,000 instructions) Drive A = 45 ms (average data access speed) Drive B = 3 ms (average data access speed) Drive C = 17 ms (average data access speed) Drive D = 10 ms (average data access speed)Calculate I/O access speed using this CPU and each of the four disk drives asthey evaluate the following track requests in this order: 0, 31, 20, 15, 20, 31, 15.Then, in each case, calculate the access speeds after the track requests arereordered and rank the four disk drives before and after reordering.10. Chapter 12. Question 11Calculate the reliability of a hard disk drive with an MTBF of 2,499 hoursduring the last 40 hours of this month. Assume e = 2.71828 and use theformula:Reliability(t) =e -(1/MTBF)(t)
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