Home > Software Testing Interview Questions > Software Testing Interview Questions Part 2

Software Testing Interview Questions Part 2

1. What is diff. between CMMI and CMM levels?
A: – CMM: – this is applicable only for software industry. KPAs -18
CMMI: – This is applicable for software, out sourcing and all other industries. KPA – 25

2. What is the scalability testing?
1. Scalabilty is nothing but how many users that the application should handle

2. Scalability is nothing but maximum no of users that the system can handle

3. Scalability testing is a subtype of performance test where performance requirements for response time, throughput, and/or utilization are tested as load on the SUT is increased over time.

4. As a part of scalability testing we test the expandability of the application. In scalability we test 1.Applicaation scalability, 2.Performance scalability

Application scalability: to test the possibility of implementing new features in the system or updating the existing features of the system. With the help of design doc we do this testing

Performance scalability: To test how the s/w perform when it is subjected to varying loads to measure and to evaluate the
Performance behavior and the ability for the s/w to continue to function properly under different workloads.

–> To check the comfort level of an application in terms of user load. And user experience and system tolerance levels
–> The point within an application that when subjected to increasing workload begin to degrade in terms of end user experience and system tolerance
–> Response time
Execution time
System resource utilization
Network delays

 stress testing

3. What is status of defect when you are performing regression testing?
A:-Fixed Status

4. What is the first test in software testing process?
A) Monkey testing
B) Unit Testing
c) Static analysis
d) None of the above

A: – Unit testing is the first test in testing process, though it is done by developers after the completion of coding it is correct one.

4. When will the testing starts? a) Once the requirements are Complete b) In requirement phase?

A: – Once the requirements are complete.

This is Static testing. Here, u r supposed to read the documents (requirements) and it is quite a common issue in S/w industry that many requirements contradict with other requirements. These are also can be reported as bugs. However, they will be reviewed before reporting them as bugs (defects).

5. What is the part of Qa and QC in refinement v model?
A: — V model is a kind of SDLC. QC (Quality Control) team tests the developed product for quality. It deals only with product, both in static and dynamic testing. QA (Quality Assurance) team works on the process and manages for better quality in the process. It deals with (reviews) everything right from collecting requirements to delivery.

6. What are the bugs we cannot find in black box?
A: — If there r any bugs in security settings of the pages or any other internal mistake made in coding cannot be found in black box testing.

7. What are Microsoft 6 rules?
A: — As far as my knowledge these rules are used at user Interface test.
These are also called Microsoft windows standards. They are

. GUI objects are aligned in windows
• All defined text is visible on a GUI object
• Labels on GUI objects are capitalized
• Each label includes an underlined letter (mnemonics)
• Each window includes an OK button, a Cancel button, and a System menu

8. What are the steps to test any software through automation tools?
A: — First, you need to segregate the test cases that can be automated. Then, prepare test data as per the requirements of those test cases. Write reusable functions which are used frequently in those test cases. Now, prepare the test scripts using those reusable functions and by applying loops and conditions where ever necessary. However, Automation framework that is followed in the organization
should strictly follow through out the process.

9. What is Defect removable efficiency?
A: – The DRE is the percentage of defects that have been removed
during an activity, computed with the equation below. The DRE can also be computed for each software development activity and plotted on a bar graph to show the relative defect removal efficiencies for each activity. Or, the DRE may be computed for a specific task or technique (e.g. design inspection, code walkthrough, unit test, 6 month operation, etc.) Number Defects Removed
DRE = –—————————————————— * 100
Number Defects at Start of Process

DRE=A/A+B = 0.8

A = Testing Team (Defects by testing team)
B = customer ( ” ” customer )

If dre <=0.8 then good product otherwise not.

10. Example for bug not reproducible?
A: — Difference in environment
11. During alpha testing why customer people r invited?
A: — becaz alpha testing related to acceptance testing, so,
accepting testing is done in front of client or customer for
there acceptance

12. Difference between adhoc testing and error guessing?
A: — Adhoc testing: without test data r any documents performing testing.

Error Guessing: This is a Test data selection technique. The selection criterion is to pick values that seem likely to cause errors.

13. Diff between test plan and test strategy?
A: — Test plan: After completion of SRS learning and business requirement gathering test management concentrate on test planning, this is done by Test lead, or Project lead.

Test Strategy: Depends on corresponding testing policy quality analyst finalizes test Responsibility Matrix. This is dont by QA. But both r Documents.

14. What is “V-n-V” Model? Why is it called as “V”& why not “U”? Also tell at what Stage Testing should be best to stared?
A: — It is called V coz it looks like V. the detailed V model is shown below.

SRS                          Acceptance testing                               /                              /     HLD (High Level Design)   System testing                            /                           /        LLD (Low level      Integration testing              Design)     /                         /                            Unit Testing                       /                      /                Coding

There is no such stage for which you wait to start testing.
Testing starts as soon as SRS document is ready. You can raise defects that are present in the document. It’s called verification.

15. What is difference in between Operating System 2000 and OS XP?
A; — Windows 2000 and Windows XP are essentially the same operating system (known internally as Windows NT 5.0 and Windows NT 5.1, respectively.) Here are some considerations if you’re trying to decide which version to use:

Windows 2000 benefits:

1) Windows 2000 has lower system requirements, and has a simpler interface (no “Styles” to mess with).
2) Windows 2000 is slightly less expensive, and has no product activation.
3) Windows 2000 has been out for a while, and most of the common problems and security holes have been uncovered and fixed.
4) Third-party software and hardware products that aren’t yet XP-compatible may be compatible with Windows 2000; check the manufacturers of your devices and applications for XP support before you upgrade.

Windows XP benefits:

1) Windows XP is somewhat faster than Windows 2000, assuming you have a fast processor and tons of memory (although it will run fine with a 300 MHz Pentium II and 128MB of RAM).
2) The new Windows XP interface is more cheerful and colorful than earlier versions, although the less- cartoon “Classic” interface can still be used if desired.
3 Windows XP has more bells and whistles, such as the Windows Movie Maker, built-in CD writer support, the Internet Connection Firewall, and Remote Desktop Connection.
4) Windows XP has better support for games and comes with more games than Windows 2000.
5) Manufacturers of existing hardware and software products are more likely to add Windows XP compatibility now than Windows 2000 compatibility.

  1. poulomi majumder
    May 6, 2008 at 6:30 am

    it is really helpful

  2. niraj kumar
    July 3, 2008 at 12:45 pm

    Thanx for the info…..nice site

  3. vinoth kumar.k
    July 12, 2008 at 2:30 pm

    it’s really very nice……

  4. vikraman
    July 30, 2008 at 10:29 am

    Very good one

  5. Prem
    July 3, 2009 at 5:10 pm

    Good article, i really like it. and i found also macrotesting http://www.macrotesting.com to be very good source for Software Testing Interview Questions & Answer and More….

    Thanks for your article



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