Software Architecture In Practice 4th Edition Len Bass, Paul Clements, Rick Kazman - Solutions

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The requirements in Appendix B are not ranked. Using reasonable assumptions, rank these requirements (use a requirements ranking matrix for brevity).
Why is the NASA ARM tool, and others like it, useful in addition to objective techniques of SRS risk mitigation?
Run the NASA ARM tool (found at arm.laplante.io) on an available SRS document. What can you infer from the results?
Reconstruct the ARM tool in your favorite programming language. Note that the generation of the statistics is relatively simple—the challenge is in parsing the SRS document (Carlson and Laplante 2014). Place restrictions on the input to the tool as needed.
Are customers more likely to feel confident if formal methods are explained to them and then used?
Where in the software development process lifecycle do formal methods provide the most benefit?
Rewrite the train station specification in another formal language, such as Z or VDM.
Conduct a consistency check for the requirements found in Section 8.2 of the Smart Home SRS (video entry).
Conduct a consistency check for the requirements found in Section 8.3 of the Smart Home SRS (video playback).
Determine if the following requirements for a wet well control system, such as the one given in Appendix A, are consistent:6.6.1 If the pump is on then the valve shall be open.6.6.2 If the valve is closed then the water level is ≤ 10 meters.6.6.3 If the water level is >10 meters then the pump is
Consider the following set of requirements for an insulin pump system:6.7.1 If the morphine dose button is pressed then the morphine dose is administered.6.7.2 If the morphine dose is administered then the dose indicator light is off.6.7.3 If the morphine dose button is pressed and the dose
Which requirements (groups) in the requirements in the SRS of Appendix A would benefit from formalization (be specific as to formalization type)?
Why is it easier to show that a set of requirements is inconsistent rather than prove that they are consistent?
For the formalizations in Sections 3.2.1 and 3.2.5 in the SRS of Appendix B discuss the problems that exist. Using whatever assumptions you need, rewrite these formalizations using Z, B, or VDM or any other formal method you choose.
How do you fit SRS documentation into an agile framework?
Is it possible to use agile methodologies when the customer is not on site?If so, how?
Why are agile methodologies generally not suitable for hardware-based projects as opposed to software projects?
Why can it be difficult for agile methodologies to cover nonfunctional requirements?
Are there any problems in encapsulating requirements into user stories?
For the pet store POS system, generate a user story for customer purchases.
For the pet store POS system, generate use cases for various customer purchases.
For the airport baggage handling system, generate a user story for dealing with baggage that is to be diverted to another flight.
For the airport baggage handling system, generate use cases for dealing with a lost piece of baggage.
For the airport baggage handling system, generate use cases for dealing with baggage that is to be diverted to another flight.
For the following systems discuss the advantages and disadvantages of using an agile approach (for the software components):7.11.1 Pet store POS system 7.11.2Airline baggage handling system 7.11.3 Smart home system (Appendix A)
There are a number of software tools, both commercial and open source, that can be used to manage the requirements activities of an agile project.Research these tools and prepare a product comparison matrix.
What criteria should be used in choosing an appropriate requirements engineering tool?
Are there any drawbacks to using certain tools in requirements engineering activities?
When selecting an open-source tool, what characteristics should you look for?
How can tools enable distributed, global requirements engineering activities? What are the drawbacks in this regard?
If an environment does not currently engage in solid requirements engineering practices, should tools be introduced?
What sort of problems might you find through a traceability matrix that you might not see without one?
Download FreeMind and use it to brainstorm a mind map for your smart home system.
Construct a FitNesse (or Cucumber) test table for the requirement described in Section 7.2 of the appendix.
Download and install the latest version of DOORS (NG at the time of this writing). Create a new project to manage the requirements for the course project you are currently completing.
Using the Sud and Arthur dimensions for evaluating requirements management tools, conduct an assessment of five different commercial or open-source tools using publicly available information.
What is the project request?a. Who wants it?b. Is it discretionary or nondiscretionary?
What is the project’s purpose?a. If completed, what impact will the new or enhanced system have on organizational performance?b. On profitability?c. On product development?d. On customer retention and customer service?
What are the functional requirements?a. What are the specific things the system should do to satisfy the purposeful requirements?b. How should they be ranked?c. What are the implementation risks?
What are the nonfunctional requirements, like security, usability, and interoperability?a. How should they be ranked?b. What are the implementation risks?c. How do you trade off functional and nonfunctional requirements?
Do we understand the project well enough to prototype its functionality?
If the prototype is acceptable, will everyone sign off on the prioritized functionality and nonfunctionality to be delivered, on the initial cost and schedule estimates, on the estimates’ inherent uncertainty, on the project’s scope, and on the management of additional requirements?
Should a request to add or change features be anonymous? Why or why not?
For the following specification, identify any requirements which are likely to become obsolete in a period of 2 years:9.2.1 The smart home system in Appendix A 9.2.2 The wet well control system in Appendix B
How could metrics abuse begin to develop in an organization?
What are some sources of process class in organizations?
Give an example of process clash, from your own experience.
Give an example of metrics abuse, from your own experience.
What are some sources of divergent goals in organizations?
Give an example of divergent goals, from your own experience.
How can CMMI be used to identify and reconcile process clash?
With a group of friends, classmates or teammates use Wideband Delphi to select a restaurant to share a meal from the following choices:9.10.1 Olive Garden 9.10.2 Carrabas 9.10.3 Red Lobster 9.10.4 Golden Corral 9.10.5 PF Chang’s 9.10.6 Ruth’s Chris Steakhouse
Select a set of five requirements management tools. From information published on their websites, create a list of features provided that support the management aspects of requirements engineering.
Investigate and use the analytical hierarchy process (AHP) to resolve the decision making problem in 7.
Why is it so important to determine the cost of features early, but not too early in the requirements engineering process?
What factors determine which metric or metrics a customer can use to help make meaningful cost–benefit decisions of proposed features for a system to be built?
How does the role of ranking requirements help in feature selection cost–benefit decision-making?
What changes (if any) would you need to make to the COCOMO, COSYSMO or feature/function point equation calculations to incorporate ranking of requirements?
Complete the derivation of Equation 10.8 from Equation
by setting the NPV equation (less the cost of the investment) to zero and solving for r.
Use COSYSMO (find a Web implementation) to conduct an effort and schedule analysis for the smart home system in Appendix A.
Use COSYSMO to conduct an effort and schedule analysis for the wet well control system in Appendix B.
Investigate the use of other decision-making techniques, such as integer programing, in helping to decide on the appropriate feature set for a proposed system.
For that QA, assemble a set of specific scenarios that describe what you mean by it. Use that set of scenarios to construct a general scenario for it.
For the QA you chose for question 2, assemble a set of design mechanisms (patterns and tactics) that help you achieve it.Data from Question 2For that QA, assemble a set of specific scenarios that describe what you mean by it. Use that set of scenarios to construct a general scenario for it.
Repeat questions 2 and 3 for the QA of development cost, and then for the QA of operating cost.Data from Question 2For that QA, assemble a set of specific scenarios that describe what you mean by it. Use that set of scenarios to construct a general scenario for it.Data from Question 3For the QA you
What might cause you to add a tactic or pattern to the sets of QAs already described (or any other QA, for that matter)?
Section 18.5 discussed several aspects of testing that are more challenging in mobile systems. What testability tactics from can help with these issues?
Is architecture debt more or less detrimental than other kinds of debt, such as code debt, documentation debt, or testing debt?
Aircraft have architectures that can be characterized by how they resolve some major design questions, such as engine location, wing location, landing gear layout, and more. For many decades, most jet aircraft designed for passenger transport have the following characteristics:• Engines housed in
What is architecture’s role in project risk reduction?
Sailing ships have architectures, which means they have “structures” that lend themselves to reasoning about the ship’s performance and other quality attributes. Look up the technical definitions for barque, brig, cutter, frigate, ketch, schooner, and sloop. Propose a useful set of
Prioritize the list of 13 reasons in this chapter according to some criteria that are meaningful to you. Justify your answer. Or, if you could choose only two or three of the reasons to promote the use of architecture in a project, which would you choose and why?
Look up recovery point objective (RPO) and recovery time objective (RTO) and explain how these can be used to set a checkpoint interval when using the rollback tactic.
Write a set of concrete scenarios for deployability using each of the possible responses in the general scenario.
Write a concrete deployability scenario for the software for a car (such as a Tesla).
Write a concrete deployability scenario for a smartphone app. Now write one for the server-side infrastructure that communicates with this app.
If you needed to display the results of a search operation, would you perform A/B testing or simply use the color that Google has chosen? Why?
Which structures would be involved in implementing the package dependencies tactic? Would you use the uses structure? Why or why not? Are there other structures you would need to consider?
Which structures would be involved in implementing the manage service interactions tactic? Would you use the uses structure? Why or why not? Are there other structures you would need to consider?
Under what circumstances would you prefer to roll forward to a new version of service, rather than to roll back to a prior version? When is roll forward a poor choice?
Write a set of concrete scenarios for energy efficiency using each of the possible responses in the general scenario.
Create a concrete energy efficiency scenario for a smartphone app (for example, a health monitoring app).
Create a concrete energy efficiency scenario for a cluster of data servers in a data center. What are the important distinctions between this scenario and the one you created for question 2?Data from in Question 2Create a concrete energy efficiency scenario for a smartphone app (for example, a
Enumerate the energy efficiency techniques that are currently employed by your laptop or smartphone.
What are the energy tradeoffs in your smartphone between using Wi-Fi and the cellular network?
Calculate the amount of greenhouse gases in the form of carbon dioxide that you, over an average lifetime, will exhale into the atmosphere. How many Google searches does this equate to?
Suppose Google reduced its energy usage per search by 1 percent. How much energy would that save per year?
How much energy did you use to answer question 7?Data from in question 7Suppose Google reduced its energy usage per search by 1 percent. How much energy would that save per year?
Think about an integration that you have done in the past—perhaps integrating a library or a framework into your code. Identify the various “distances” that you had to deal with. Which of these required the greatest effort to resolve?
Write a concrete integrability scenario for a system that you are working on (perhaps an exploratory scenario for some component that you are considering integrating).
Which of the integrability tactics do you think would be the easiest to implement in practice, and why? Which would be the most difficult, and why?
Many of the integrability tactics are similar to the modifiability tactics. If you make your system highly modifiable, does that automatically mean that it will be easy to integrate into another context?
A standard use of SOA is to add a shopping cart feature to an e-commerce site. Which commercially available SOA platforms provide different shopping cart services? What are the attributes of the shopping carts? Can these attributes be discovered at runtime?
Write a program that accesses the Google Play Store, via its API, and returns a list of weather forecasting applications and their attributes.
Sketch a design for a dynamic discovery service. Which types of distances does this service help to mitigate?
In the list you compiled for question 1, which tactics and patterns are especially helpful for each?Data from Question 1Modifiability comes in many flavors and is known by many names; we discussed a few in the opening section of this chapter, but that discussion only scratches the surface. Find one
In many laundromats, washing machines and dryers accept coins but do not give change. Instead, separate machines dispense change. In an average laundromat, there are six or eight washers and dryers for every change machine. What modifiability tactics do you see at work in this arrangement? What can
For the laundromat in question 4, describe the specific form of modifiability (using a modifiability scenario) that seems to be the aim of arranging the machines as described.Data from Question 4In many laundromats, washing machines and dryers accept coins but do not give change. Instead, separate
A wrapper, introduced in Chapter 7, is a common architectural pattern to aid modifiability. Which modifiability tactics does a wrapper embody?

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Software Architecture In Practice 4th Edition Len Bass, Paul Clements, Rick Kazman - Solutions

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