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Thursday, February 22, 2007

testings interview question and answers part-4

Q: Give me five solutions to problems that occur during software development .

A: Solid requirements, realistic schedules, adequate testing, firm
requirements and good communication. 1. Ensure the requirements are solid, clear, complete, detailed,
cohesive, attainable and testable. All players should agree to requirements. Use prototypes to help nail down requirements. 2. Have schedules that are realistic. Allow
adequate time for planning, design, testing, bug fixing, re-testing, changes and documentation. Personnel should be able to complete the project without burning out. 3. Do testing that
is adequate. Start testing early on, re-test after fixes or changes, and plan for sufficient time for both testing and bug fixing. 4. Avoid new
features. Stick to initial requirements as much as possible. Be prepared to defend design against changes and additions, once development has begun and be prepared to explain consequences. If changes are necessary, ensure they're adequately reflected in related schedule changes. Use prototypes early on so customers' expectations are clarified and customers can see what to expect; this will minimize changes later on. 5. Communicate. Require walk-throughs and inspections when appropriate; make extensive use of e-mail, networked bug-tracking tools, tools of change management. Ensure documentation is available and up-to-date. Use documentation that is electronic, not paper. Promote teamwork and cooperation.

Q: Do automated testing tools make testing easier?

A: Yes and no. For larger
projects, or ongoing long-term projects, they can be valuable. But for small projects, the time needed to learn and implement them is usually not worthwhile. A common type of automated tool is the record/playback type. For example, a test engineer clicks through all combinations of menu choices, dialog box choices, buttons, etc. in a GUI and has an automated testing tool record and log the results. The recording is typically in the form of text, based on a scripting language that the testing tool can interpret. If a change is made (e.g. new buttons are added, or some underlying code in the application is changed), the application is then re-tested by just playing back the recorded actions and compared to the logged results in order to check effects of the change. One problem with such tools is that if there are continual changes to the product being tested, the recordings have to be changed so often that it becomes a very time-consuming task to continuously update the scripts. Another problem with such tools is the interpretation of the results (screens, data, logs, etc.) that can be a time-consuming task.

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