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software testing and quality assurance

Questions and Answers of Software Testing And Quality Assurance

=+ Is it possible to return to the previous node on the navigation path?
=+Does the user understand his location within the content architecture as the NSU is executed?
=+Is the WebApp fully compatible with the server OS?
=+· Are system files, directories, and related system data created correctly when the WebApp is operational?
=+Do system security measures (e.g ., firewalls or encryption) allow the WebApp to execute and service users without interference or perfor-mance degradation?
=+Has the WebApp been tested with the distributed server configuration12(if one exists) that has been chosen?
=+Is the WebApp properly integrated with database software?
=+ Is the WebApp sensitive to different versions of database software?
=+Do server-side WebApp scripts execute properly?
=+Have system administrator errors been examined for their effect on WebApp operations?
=+· If proxy servers are used, have differences in their configuration been addressed with on-site testing?
=+Does the server response time degrade to a point where it is noticeable and unacceptable?
=+At what point (in terms of users, transactions, or data loading) does performance become unacceptable?
=+What system components are responsible for performance degradation?
=+What is the average response time for users under a variety of loading conditions?
=+Does performance degradation have an impact on system security?
=+Is WebApp reliability or accuracy affected as the load on the system grows?
=+What happens when loads that are greater than maximum server capacity are applied?
=+Does performance degradation have an impact on company revenues?
=+. Does the system degrade "gently," or does the server shut down as capac-ity is exceeded?
=+Does server software generate "server not available" messages? More generally, are users aware that they cannot reach the server?
=+Does the server queue resource requests and empty the queue once ca-pacity demands diminish?
=+Are transactions lost as capacity is exceeded?
=+· Is data integrity affected as capacity is exceeded?
=+What values of N, T, and D force the server environment to fail?
=+How does failure manifest itself?
=+ Are automated notifications sent to technical sup-port staff at the server site?
=+If the system does fail, how long will it take to come back online?
=+Are certain WebApp functions (e.g ., compute intensive functionality, data streaming capabilities) discontinued as capacity reaches the 80 or 90 per-cent level?
=+25.1. Are there any situations in which WebApp testing should be totally disregarded?
=+25.2. In your own words, discuss the objectives of testing in a WebApp context.
=+25.3. Compatibility is an important quality dimension. What must be tested to ensure that compatibility exists for a WebApp?
=+25.4. Which errors tend to be more serious-client-side errors or server-side errors? Why?
=+25.5. What elements of the WebApp can be "unit tested"?
=+What types of tests must be con-ducted only after the WebApp elements are integrated?
=+25.6. Is it always necessary to develop a formal written test plan? Explain.
=+25.7. Is it fair to say that the overall WebApp testing strategy begins with user-visible ele-ments and moves toward technology elements?
=+ Are there exceptions to this strategy?
=+25.8. Is content testing really testing in a conventional sense? Explain.
=+25.9. Describe the steps associated with database testing for a WebApp. Is database testing predominantly a client-side or server-side activity?
=+25.10. What is the difference between testing that is associated with interface mechanisms and testing that addresses interface semantics?
=+25.11. Assume that you are developing an online pharmacy (YourCornerPharmacy.com)that caters to senior citizens. The pharmacy provides typical functions, but also maintains
=+a database for each customer so that it can provide drug information and warn of potential drug interactions. Discuss any special usability tests for this WebApp.
=+25.12. Assume that you have implemented a drug interaction checking function for YourCornerPharmacy.com (Problem 20.11). Discuss the types of component-level tests that
=+would have to be conducted to ensure that this function works properly. (Note: A database would have to be used to implement this function.)
=+25.13. What is the difference between testing for navigation syntax and navigation semantics?
=+25.14. Is it possible to test every configuration that a WebApp is likely to encounter on the server side?
=+On the client side? Ifit is not, how do you select a meaningful set of configura-tion tests?
=+25.15. What is the objective of security testing?
=+Who performs this testing activity?
=+25.16. YourCornerPharmacy.com (Problem 25.11) has become wildly successful, and the number of users has increased dramatically in the first two months of operation. Draw a graph that depicts
=+server-side resources. Label the graph to indicate points of interest on the "response curve."
=+25.17. In response to it, success YourCornerPharmacy.com (Problem 25.11) has imple-mented a special server solely to handle prescription refills. On average, 1000 concurrent
=+users submit a refill request once every two minutes. The WebApp downloads a 500-byte block of data in response. What is the approximate required throughput for this server in megabits per second?
=+25.18. What is the difference between load testing and stress testing?
=+Do you have to build a fully functional prototype before you test with users?
=+Should you test with the user's device or provide a device for testing?
=+What devices and user groups should you include in testing?
=+What are the benefits/drawbacks of lab testing versus remote testing?
=+26.1. Are there any situations in which MobileApp testing on actual devices can be disregarded?
=+26.2. In your own words, discuss the objectives for testing a Mobile App.
=+26.3. Compatibility is an important quality dimension. What must be tested to ensure that compatibility exists for a Mobile App?
=+26.4. Locate a free Mobile App testing tool. Critique the performance of the tool relative to the Mobile App with which you are familiar.
=+26.5. What elements of the MobileApp can be "unit tested"? What types of tests must be conducted only after the Mobile App elements are integrated?
=+26.6. Is it always necessary to develop a formal written-test plan? Explain.
=+26.7. Is it fair to say that the overall MobileApp-testing strategy begins with user-visible
=+elements and moves toward technology elements? Are there exceptions to this strategy?
=+26.8. Is certification testing really testing in a conventional sense? Explain.
=+26.9. Describe the steps associated with user experience testing for a MobileApp.
=+26.10. Assume that you are developing a MobileApp to access an online pharmacy that caters to senior citizens. The pharmacy provides typical functions, but also maintains a database for each
=+26.11. Assume that you have implemented a Web service that provides a drug interaction-checking function for YourCornerPharmacy.com (see Problem 26.10). Discuss the types of
=+component-level tests that would have to be conducted on the mobile device to ensure that the Mobile App accesses this function properly.
=+26.12. How can a MobileApp's ability to take context into account be tested?
=+26.13. Is it possible to test every configuration that a Mobile App is likely to encounter in the production environment? If it is not, how do you select a meaningful set of configuration tests?
=+26.14. Describe a security test that might need to be conducted for the YourCornerPhar-macy (Problem 26.10) Mobile App. Who should perform this test?
=+26.15. What is the difference between stress-testing a MobileApp and stress-testing a WebApp?
Where Do Architectures Come From?
What Makes a "Good" Architecture?
1: How does the nature of your organization affect the architectures that it develops? How do the architectures affect the nature of the organization?
2: What kind of business goals drive (or have driven) the creation of the software architectures of your organization?
3: Who are the stakeholders that exert the most influence over the architecture of systems in your organization? What are their goals? Do the goals ever conflict?
Why Is Software Architecture Important?
How is the system to be structured as a set of code units (modules)?
How is the system to be structured as a set of elements that have runtime behavior (components) and interactions(connectors)?
How is the system to relate to nonsoftware structures in its environment (i.e., CPUs, file systems, networks, development teams, etc.)?
1: Software architecture is often compared to building architecture. What are the strong points of this comparison? What is the correspondence in buildings to software architecture structures and
2: What is the difference between a reference architecture and an architectural pattern? What can you do with one that you cannot do with the other in terms of organizational planning and
3: Do the architectures in your organization recognize the different views (structures and relations) inherent in architecture?If so, which ones? If not, why not?
4: Is there a different definition of software architecture that you are familiar with? If so, think about the ways in which this definition supports our acid test of an architecture: Does it
For the system you are currently working on, what are the most important qualities? What are the system-specific scenarios that capture these qualities and what are the general scenarios they make
Brooks argues that conceptual integrity is the key to successful systems. Do you agree? Can you think of successful systems that have not had this property? If so, what factors made those systems
Generate scenarios for the business and architecture qualities enumerated in Sections 4.4 and 4.5. Have you captured each quality with your scenarios? Which qualities are difficult to capture with
what we mean by software engineering
•software engineering's track record
what we mean by good software
why a systems approach is important
how software engineering has changed since the 1970s
Where and when are we likely to find a particular kiod of fault?
How cao we fiod faults earlier in the development process?
How can we build io fault tole rance so that we minimize the likeLihood that a fault wiU become a failure?

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