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Why are there so many software bugs?
Software QA/Testing Technical FAQs
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Why are there so many software bugs?
Generally speaking, there are bugs in software because of unclear requirements, software complexity, programming errors, changes in requirements, errors made in bug tracking, time pressure, poorly documented code and/or bugs in tools used in software development.
* There are unclear software requirements because there is miscommunication as to what the software should or shouldn't do.
* Software complexity. All of the followings contribute to the exponential growth in software and system complexity: Windows interfaces, client-server and distributed applications, data communications, enormous relational databases and the sheer size of applications.
* Programming errors occur because programmers and software engineers, like everyone else, can make mistakes.
* As to changing requirements, in some fast-changing business environments, continuously modified requirements are a fact of life. Sometimes customers do not understand the effects of changes, or understand them but request them anyway. And the changes require redesign of the software, rescheduling of resources and some of the work already completed have to be redone or discarded and hardware requirements can be effected, too.
* Bug tracking can result in errors because the complexity of keeping track of changes can result in errors, too.
* Time pressures can cause problems, because scheduling of software projects is not easy and it often requires a lot of guesswork and when deadlines loom and the crunch comes, mistakes will be made.
* Code documentation is tough to maintain and it is also tough to modify code that is poorly documented. The result is bugs. Sometimes there is no incentive for programmers and software engineers to document their code and write clearly documented, understandable code. Sometimes developers get kudos for quickly turning out code, or programmers and software engineers feel they cannot have job security if everyone can understand the code they write, or they believe if the code was hard to write, it should be hard to read.
* Software development tools , including visual tools, class libraries, compilers, scripting tools, can introduce their own bugs. Other times the tools are poorly documented, which can create additional bugs.
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Other Interview Questions
- Software Quality Assurance
- What's difference between client/server and Web Application ?
- Software Quality Assurance Activities
- What's the difference between STATIC TESTING and DYNAMIC TESTING?
- Software Testing
- What's difference between QA/testing
- What black box testing types can you tell me about?
- What is software testing methodology?
- What’s the difference between QA and testing?
- Why Testing CANNOT Ensure Quality
- How to find all the Bugs during first round of Testing?
- Is regression testing performed manually?
- How to choose which defect to remove in 1000000 defects? (because It will take too much resources in order to remove them all.)
- What is software quality?
- What are the five dimensions of the Risks?
- What is good code?
- How do you perform integration testing?
- Why back-end testing is required, if we are going to check the front-end ....?
- What is Software “Quality”?
- What is retesting?
- How to establish QA Process in an organization?
- What is software testing?
- Any recommendation for estimation how many bugs the customer will find till gold release?
- When the build comes to the QA team, what are the parameters to be taken for consideration to reject the build upfront without committing for testing ?
- What is software testing?
- What is the testing lifecycle?
- How to validate data?
- What is quality?
- What is Benchmark?
- Which of the following Statements about gernerating test cases is false?
- What is “Quality Assurance”?
- Quality Assurance and Software Development
- Which things to consider to test a mobile application through black box technique?
- What is the general testing process?
- What's normal practices of the QA specialists with perspective of software?
- from low-level to high level (Testing in Stages)
- How to test and to get the difference between two images which is in the same window?
- Testing Strategies
- When do we prepare a Test Plan?
- What is boundary value analysis?
- Describe methods to determine if you are testing an application too much?
- Procedural Software Testing Issues
- How do I start with testing?
- OO Software Testing Issues
- What is the purpose of black box testing?
- How do you create a test plan/design?
- What is the purpose of a test plan?
- Can we prepare Test Plan without SRS?
- How do test plan templates look like?
- How to Test a desktop systems ?
- How do you create a test strategy?
- How to do Estimating Testing effort ?
- What is the purpose of test strategy?
- What's Quality Approach document? what should be the contents and things like that...
- What does a test strategy document contain?
- Why Q/A should not report to development?
- Which of the following statements about Regression statements are true?
- How do you execute tests?
- What is a requirements test matrix?
- Can you give me a requirements test matrix template?
- What metrics are used for bug tracking?
- In QA team, everyone talks about process. What exactly they are taking about? Are there any different type of process?
- What metrics are used for test report generation?
- What is quality plan?
- What is the difference between verification and validation?
- What is the difference between efficient and effective?
- How effective can we implement six sigma principles in a very large software services organization?
- What stage of bug fixing is the most cost effective?
- What is Defect Life Cycle.?
- What is the difference between a software bug and software defect?
- Are developers smarter than tester? Any suggestion about the future prospects and technicality involvedin the testing job?
- What's the difference between priority and severity?
- How to test a web based application that has recently been modified to give support for Double Byte Character Sets?
- What is the difference between software fault and software failure?
- before creating test cases to "break the system", a few principles have to be observed:
- Would like to know whether Black Box testing techniques like Boundary Value Analysis and Equivalence Partitioning - during which phases of testing are they used,if possible with examples ?
- Test Case Design
- How to use methods/techniques to test the bandwidth usage of a client/server application?
- How do test case templates look like?
- How to insert a check point to a image to check enable property in QTP?
- How do you write test cases?
- Diferences Between System Testing and User Acceptance Testing?
- What is the difference between a test plan and a test scenario?
- Can you give me an example on reliability testing?
- Need function to find all the positions? Ex: a string "abcd, efgh,ight" . Want break this string based on the criteria here ever found the..
- What is the difference between monkey testing and smoke testing?
- It's a good thing to share test cases with customers
- Tell me about daily builds and smoke tests.
- How to Read data from the Telnet session?
- What is the difference between system testing and integration testing?
- How to trace fixed bug in test case?
- What is the difference between performance testing and load testing?
- After the migration done, how to test the application (Frontend hasn't changed just the database changed)
- What is the difference between reliability testing and load testing?
- Some general guidelines on what to test for web based applications.
- What is the difference between volume testing and load testing?
- What types of testing can you tell me about?
- Which test cannot be automated? Acceptence test plan is prepared from? Which is the test case design methodology? Does test plan contains bug tracing procedure and reporting procedure?
- What is ACH and NACHA?
- What is the role of documentation in QA?
- Is there a way to automate XML file comparison?
- How do you introduce a new software QA process?
- What's requitrement of Bug tracking tool?
- When do you choose automated testing?
- What a Coverage Matrix is? or What is a traceability matrix?
- Is white box testing different from unit testing?
- Do automated testing tools make testing easier?
- Ho to write Software Requirement Sepcification (SRS) document for Grade Card System?
- How can I schedule the different testcases in a (.t) test script so that all the test cases it contains run one after another ? ...
- Why are there so many software bugs?
- What are Test Cases, Test Suites, Test Scripts, and Test Scenarios (or Scenaria)?
- Give me five common problems that occur during software development.
- What is SRS and BRS . and what is the difference between them?
- What should be done after a bug is found?
- Qive some examples of Low Severity and Low Priority Bugs .....
- Give me five solutions to problems that occur during software development.
- What is risk analysis? What does it have to do with Severity and Priority?
- It is logical to be described different expected results for one action? ....
- What if the software is so buggy it can't be tested at all?
- What is API Testing?
- What if there isn't enough time for thorough testing?
- How to test a module(web based developed in .NET) which would load data from the list(which is text file) into the database(SQL Server)
- What if the project isn't big enough to justify extensive testing?
- Is the testing an art of thinking ?
- What is the role of test engineers?
- What is the role of a QA engineer?
- What are the responsibilities of a QA engineer?
- The system runs at Intranet environment and it has a security system.....
- What is the ratio of developers and testers?
- What is the difference between V-model and water fall model?
- Which of these roles are the best and most popular?
- For Reliability, Usability and Testability. Explain why you would test for these factors?
- What other roles are in testing?
- Whats the difference between ISO vs CMM ?
- To build and release the build to the QA. Does any body knowing in detail about this profile?
- What makes a good test engineer?
- What's the role in CMM Level in Testing? What's the diff b/w 5 levels? which level most commonly used in testing?
- What are Internationalization, Localization, Globalization, and Multilingualization Testing?
- What makes a good QA engineer?
- Difference between Verification and Validation?
- Looking for a tool whcih can do bulk data insert to various tables in the test database and also that tool which work with DB2, SQLServer and Oracle.
- What makes a good QA/Test Manager?
- Need to shut down network connectivity mid tansaction. How to do this programmatically via windows interface?
- What can be done if requirements are changing continuously?
- What if the application has functionality that wasn't in the requirements?
- How to write Test Case for telephone ?
- How do you know when to stop testing?
- WHAT WILL BE TESTED ON A STATIC WEB PAGE?
- How can software QA processes be implemented without stifling productivity?
- How to solve this issue - When developers blame testers for reporting bugs that is not reproducible on their machine?
- Why do we recommended that we test during the design phase?
- How to test a application in flash?
- How test estimation (in terms of schedule, cost, resources required) will be done during developing of test plan?
- What kind of automated software used to test a Web-based application with a .NET (ASP.NET and C#...also SQL Server) framework?
- What kind of automated testing tool should Small company use?
- What if organization is growing so fast that fixed QA processes are impossible?
- Can We do performance testing manually?*
- What's the SDLC models- waterfall and v-models?
- What's server side testing
- How a particular test team is formed ?
- Need a template for preparing the Test Environment.
- What is the exact difference between functional and non functional testing?
- How is testing affected by object-oriented designs?
- Standards and templates - what is supposed to be in a document?
- Need some QA advice: * Improve Management Commitment to Quality Assurance , * Improve the Internalization Quality Assurance as a process
- I don't have a lot of money. How can I become a good tester?
- What's fuzz testing ?
- Which of these tools should I learn?
- What's differentiate Test_Plan and Test_Strategy
- What are some of the software configuration management tools?
- How to write Nunit test cases
- What is documentation change management?
- How can I test without requirements?
- What is the difference between user documentation and user manual?
- Why was bug x or bug y caught NOT during testing?"
- How do you conduct peer reviews?
- Internal Server Error problem while doing load testing using Microsoft Web Application Stress Tool ....
- How do you check the security of an application?
- How do I write a Test Case?
- How to estimate product test hours for new releases?
- When testing the password field, what is your focus?
- What are the metrics to be collected as part of testing?
- What is your view of software QA/testing?
- How to test a web application, for security testing of Web Application?
- Who write the user acceptance testing testcases?
- What is automatic recovery testing?
- What's the difference between Alpha, Beta and User Acceptance testing?
- How can I be a good tester?
- How to do Laod testing for web based Application?
- What is GUI testing? What elements will we cover in GUI testing?
- What is that column "steps to reproduce" mean in bug tracking?
- When is a process repeatable?
- If you don't have requirements specification, how will you go about testing the application?
- How can I start my career in automated testing?
- What should test in BANKING DOMAIN application ?
- Collaboration between dev and testing
- Is there any common testing framework or testing best practices for distributed system? For example, for distrbuted database management system?
- Why is that my company requires a PDR?
- A list of ten good things about PDRs!
- What is the best way to simulate the real behavior of a web based system?
- How can I shift my focus and area of work from QC to QA?
- How to use loadrunner for testing web-based application?
- What techniques and tools can enable me to migrate from QC to QA?
- What is the BEST WAY to write test cases?
- What is the difference between build and release?
- How to test the memory leakeage mannually?
- What is the difference between version and release?
- How to write Test cases for Login screen?
- What is the checklist for credit card testing?
- How do you test data integrity?
- What is the difference between data validity and data integrity?
- What is the difference between static and dynamic testing?
- What testing tools should we use?
- Why should I use static testing techniques?
- What is the definiton of top down design?
- What is the future of software QA/testing?
- How can I be effective and efficient, when I'm testing e-commerce web sites?
- What is the difference between top down and bottom up design?
- Give me one test case that catches all the bugs!
- What testing approaches can you tell me about?
- Can you give me five common problems?
- Can you give me five common solutions?
- What if the application has functionality that wasn't in the requirements?
- How can software QA processes be implemented without stifling productivity?
- Should I take a course in manual testing?
- To learn to use WinRunner, should I sign up for a course at a nearby educational institution?
- Test Specifications
- Formal Technical Review: Reviews that include walkthroughs, inspection, ....
- Reluctance of implementing Software Quality Assurance
- Benefits of Software Quality Assurance to the organization
- Constraints of Software Quality Assurance
- SOFTWARE TESTING METRICS
- OBJECT ORIENTED TESTING METRICS
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