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study help
computer science
systems analysis design
Questions and Answers of
Systems Analysis Design
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?
Describe the evolution of specifications from initial System Concept to SPS.
What are the basic types of specifications?
How does each type of specification apply to system development?
What is a Specification Tree and how is it structured?
Who “owns” a specification and what is their authority to implement changes?
What is the generalized format for most specifications?
What is a requirement?
What is a source or originating requirement?
What is a stakeholder requirement?
What is an objective requirement?
What is a threshold requirement?
What are the categories of specification requirements?
What are operational requirements?
What are capability requirements?
What are design requirements?
What are interface requirements?
What are verification requirements?
What are validation requirements?
What are requirement priorities?
What are the four types of operational requirements?
What are four common problems with requirements?
What are some common approaches to developing specifications?
What is the “feature-based” specification development approach?
What is the “performance-based” specification development approach?
What is the “reuse” specification development approach?
What is the “capability architecture-based” specification development approach?
Compare and contrast the four specification development approaches.
How are specification reviews performed?
How do you know when a specification is ready for release?
What is requirements derivation?
How do you derive requirements?
What is requirements allocation?
How do you allocate requirements?
What is requirements flow down?
How do you flow down requirements?
What is requirements traceability?
How do you trace requirements? To where?
What is the relationship between MOEs, MOSs, MOPs, and TPMs?
Who is responsible for MOEs, MOSs, MOPs, and TPMs?
How do you track and controlMOEs, MOSs,MOPs, and TPMs?
What is the relationship between TPMs and risk items?
When do TPMs trigger risk items for proactive risk mitigation?
What are the attributes of a well-defined requirement?
When is a “requirement” officially recognized as a requirement?
What are some principles for preparing well-defined requirements?
What are some of the common pitfall in preparing requirements statements?
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