Written Assignment 10 COS-2400 Randy Barham

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Thomas Edison State College *

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Written Assignment 10 Randy Barham Thomas Edison State University COS-2400 Operating Systems March 17, 2024

1. Imagine that you are the manager of a small business computing center. List at least three techniques that you would use to convince a busy, reluctant night operator to perform regular backups. Explain the best and worst possible technique to assure your success. To persuade a busy night operator to perform regular backups, three techniques could be employed: educating them on the importance of backups for disaster recovery, offering incentives for consistently completing backups, and automating the backup process as much as possible to make it less cumbersome. The most effective technique might be automating the process, as it directly addresses the operator's workload concerns. The least effective could be offering incentives, as this approach may not foster a lasting understanding or commitment to the importance of backups. 2. Disgruntled employees can sometimes wreak havoc on a computer system because other users leave their passwords written in plain view in the space surrounding their workstations. How would you convince your users to safeguard their passwords? What specific advice would you give them? To ensure users safeguard their passwords, it's crucial to conduct awareness training that highlights the risks of exposed passwords and to establish clear policies regarding password confidentiality. Specific advice would include using strong, unique passwords for different accounts, avoiding the practice of writing down passwords near workstations, and considering the use of a password manager to securely store and manage passwords. 4. Describe the advantages and disadvantages of password generator software. Would you recommend the use of such software for your own system? Explain why or why not.

Password generator software offers the advantage of creating strong, complex passwords that are difficult for attackers to guess, thereby enhancing security. The disadvantage is that these passwords can be hard to remember, potentially requiring users to rely on a password manager. Whether to recommend this software would depend on the specific needs of the system and its users. For systems where security is a top priority and users are disciplined about password management, using password generator software is advisable. 5. Keeping the critical operating systems patches current is an important aspect of both system security and system administration. Should executive management be made aware of this or any aspect of system security? Explain why or why not. Executive management should definitely be made aware of the importance of keeping operating system patches current, as well as other aspects of system security. This awareness ensures that security measures are properly prioritized and funded, and that there's an understanding of the potential risks and their impact on the business. Informing executives helps integrate security into the broader business strategy and decision-making process. 1. Describe how you would use a negative feedback loop to manage your bank balance. Describe how you would do so with a positive feedback loop. Explain which you would prefer and why. Using a negative feedback loop to manage a bank balance involves adjusting behavior in response to the balance; for example, cutting spending when the balance drops to avoid overdrafts. A positive feedback loop could involve investing excess funds to generate more income, potentially increasing the balance further. The negative feedback loop is preferable for

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managing a bank balance due to its focus on preventing financial instability and maintaining a safety margin. 3. Revisiting the example of the gas station lines and positive feedback loops, why do you think the length of gas lines will change? Are there are other factors that could impact the length of gas lines? Explain in your own words why or why not. The length of gas station lines changes due to the positive feedback loop where longer lines can attract more customers, believing the service or price to be better, which in turn makes the lines even longer. Other factors affecting gas line length include the number of pumps available, the efficiency of the service, and the price of gas. Psychological factors and station capacity both play a role in how gas lines form and fluctuate. 11. Calculate the reliability of a hard disk drive with an MTBF of 2,499 hours during the last 40 hours of this month. Assume e = 2.71828 and use the formula: Reliability(t) = e - (1/MTBF)(t) The reliability of the hard disk drive over the last 40 hours of this month is approximately 0.984, indicating a high likelihood of the drive operating without failure during this time period. 14. Calculate the availability of a server with an MTBF of 75 hours and an MTTR of 3 days (72 hours). The availability of the server is approximately 0.972, meaning it is expected to be operational and available for use about 97.2% of the time.

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