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computer science
systems analysis design

Questions and Answers of Systems Analysis Design

How are Engineering analyses documented?
What format should be used for documenting Engineering analyses?
What are SE design and development rules for analytical decision making?
How do you characterize random variations in system inputs sufficiently to bound the range of acceptable values in terms of Normal Distribution with standard deviations?
How do SEs establish criteria for acceptable and unacceptable system inputs and outputs?
What is a design range?
How are upper and lower tolerance limits established for a design range?
How do SEs establish criteria for caution and warning indicators?
What development methods can be employed to improve our understanding of the variability of Engineering input data?
What is CEP? How is it used?
What is meant by the degree of correlation?
What are two types of correlation?
Explain the differences between Technical Report Recommendations, Findings, Conclusions, and their sequences of presentation in the document.
Explain why it is important to have a documented Problem Statement (Chapter 4) from the decision-maker authorizing and tasking an analysis.
Explain why it is important to state the decision-maker’s Problem Statement in an Analysis Technical Report.
Why is it important to establish a methodology for an analysis before its start?
What is a cycle time?
What is a queue time?
What is a transport time?
What is a processing time?
What is a performance budget?
If you are confronted with analyzing System throughput performance across a chain of Processing Tasks, what are the key performance attributes associated with each task and between tasks that you
How do you establish and track performance budgets at the SPS and EDS levels?
What is a design safety margin?
What are the challenges of establishing performance budgets and margins and how should you document and control them?
Assume you have established System performance budgets and margins. Describe how would you allocate them to Products, Subsystems, Assemblies, and so on, verify traceability, and maintain intellectual
What is a trade study?
What is the work product of a trade study?
What are the attributes of a trade study?
How are trade studies conducted?
Who is responsible for conducting trade studies?
When are trade studies conducted?
Why do you need to perform trade studies?
What is a trade space?
What methodology is used to perform a trade study?
How do you select trade study decision factors, criteria, and weights?
What is a utility function?
What is a sensitivity analysis?
How do you document, report, and present trade study results?
What are some of the Enterprise issues, technical issues, and risks in conducting a trade study?
What is an analytical model?
What are the various types of analytical models?
How are models employed in SE decision-making?
How are models validated?
Box states that “All models are wrong but some are useful.”a. Provide an explanation of the quote.b. How can the “usefulness” of models be improved?
What is a simulation?
What are 3 approaches for representing anOPERATING ENVIRONMENT to a model or simulation?
What is a mock-up?
How do SEs employ mock-ups? Provide examples and explain what types of knowledge SEs would expect to gain from them?
What is a test bed? Provide 3 example systems that might be candidates for a testbed?
How is a test bed employed in SE decision making?
What is meant by the “plug and play” capability of a testbed?
Testbeds can be used to minimize the effects of SITE schedule problems. Identify 5 reasons addressed in the chapter concerning how they can help alleviate the problems.
M&S has a number of challenges and issues SEsmust be prepared to address. Identify the 7 challenges addressed in the chapter.
What does the acronym RMA represent?
When should RMA be addressed on a project?
Why are RMA addressed as a set?
Who is accountable for RMA?
Differentiate System Reliability and Mission Reliability.What is the scope of each?
Do you predict or estimate a System or Entity’s Reliability?
When expressing a System or Entity’s Reliability, what criteria should be included? Where should those criteria be documented? Why?
Which Level of Abstraction—System, Product, Subsystem, Assembly, Subassembly, or Part—does System Reliability apply to?
If a System or Entity’s Failure Rate, λ(t), and instant in time, t(t), are known, how do you compute its Reliability?
What is the difference between a System or Entity’s Average Failure Rate, λ(t)Avg, and Instantaneous Failure Rate, λ(t)Inst?
If MTTF represents the Mean Time to Failure, what Greek letter is used to represent the frequency of MTTF ?
MTTF applies to what types of Systems or Entities?
If MTBF represents the Mean Time Between Failure, what Greek letter is used to represent the frequency of MTBF?
MTBF applies to what types of Systems or Entities?
What are Lifetime Data Distributions and how are they applied to RMA?
What are the seven Lifetime Data Functions?
What is a Normal (Gaussian) Distribution, what is its shape, and what are its characteristics?
What is a Log-Normal Distribution, what is its shape, and what are its characteristics?
What is an Exponential Data Distribution, what is its shape, and what are its characteristics?
What is a the Cumulative Distribution Function (CDF), what is its source of derivation, and what information does it communicate?
What is a Weibull Distribution, what is its shape, what are its key parameters, and what do the parameters control?
What Lifetime Data Distribution provides the most flexibility in modeling the failure characteristics of a System or Entity?
What is the Failure Rate Function?
What is the Bathtub Curve? What are its origins? What is its shape? Define each of its regions and discuss their characteristics. Illustrate how the Bathtub Curve was composed?
What is the characteristic of the Failure Rate that is unique to the Exponential Distribution in the Bathtub Curve Stabilized Failure Regions (SFR)?
What is a Parts Count Estimate? What is its purpose and relevance?
Is the Bathtub Curve valid and does it apply to all Systems or Products? If not, why?
What is the relevance and importance ofRMAto System Architecting?
How are specification reliability requirements allocated from the SPS?
What types of network configurations are used to compute the reliability of a System or Entity Architecture?
What is a FMEA, its purpose, and what outcomes does it expect to achieve?
What is System Maintainability?
What is the difference between Maintainability and Maintenance?
MTBF is composed and computed by the summation of two other metrics. What are they?
Within an SPS or EDS outline, where are the RMA requirements specified?
A specific System or Product is characterized by an Exponential Distribution PDF, f(t). When it reaches its mean life point,what percentage of its population remain as survivors?
What parameters are used to characterize the Maintainability of a System or Entity?
What is System Availability?
What are the three types ofAvailability, define what each includes/excludes, and develop a statement for each that expresses its computation?
How do you improve System Reliability?
How do you improve System Maintainability?
How do you improve System Availability?
Is the Bathtub Curve valid?Why? State the pros and cons of its validity.
As an SE, why should you be expected to understand the contents of this chapter?
What is a specification?
What is a well-defined specification?

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