Software testing interview questions and answers 02
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Software testing interview questions and answers 02
60. What is Impact analysis? How to do impact analysis in yr project?
A: — Impact analysis means when we r doing regressing testing at that time we r checking that the bug fixes r working properly, and by fixing these bug other components ar...
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Software testing interview questions
and answers 02
60. What is Impact analysis? How to do impact analysis in yr project?
A: — Impact analysis means when we r doing regressing testing at that time we r
checking that the bug fixes r working properly, and by fixing these bug other components
are working as per their requirements r they got disturbed.
61. HOW TO TEST A WEBSITE BY MANUAL TESTING?
A: — Web Testing
During testing the websites the following scenarios should be considered.
Functionality
Performance
Usability
Server side interface
Client side compatibility
Security
Functionality:
In testing the functionality of the web sites the following should be tested.
Links
Internal links
External links
Mail links
Broken links
Forms
Field validation
Functional chart
Error message for wrong input
Optional and mandatory fields
Database
Testing will be done on the database integrity.
Cookies
Testing will be done on the client system side, on the temporary internet files.
Performance:
Performance testing can be applied to understand the web site’s scalability, or to
benchmark the performance in the environment of third party products such as servers
and middle ware for potential purchase.
,Connection speed:
Tested over various Networks like Dial up, ISDN etc
Load
What is the no. of users per time?
Check for peak loads & how system behaves.
Large amount of data accessed by user.
Stress
Continuous load
Performance of memory, cpu, file handling etc.
Usability :
Usability testing is the process by which the human-computer interaction characteristics
of a system are measured, and weaknesses are identified for correction. Usability can be
defined as the degree to which a given piece of software assists the person sitting at the
keyboard to accomplish a task, as opposed to becoming an additional impediment to such
accomplishment. The broad goal of usable systems is often assessed using several
Criteria:
Ease of learning
Navigation
Subjective user satisfaction
General appearance
Server side interface:
In web testing the server side interface should be tested.
This is done by Verify that communication is done properly.
Compatibility of server with software, hardware, network and database should be tested.
The client side compatibility is also tested in various platforms, using various browsers
etc.
Security:
The primary reason for testing the security of an web is to identify potential
vulnerabilities and subsequently repair them.
The following types of testing are described in this section:
Network Scanning
Vulnerability Scanning
Password Cracking
Log Review
Integrity Checkers
Virus Detection
Performance Testing
Performance testing is a rigorous usability evaluation of a working system under realistic
conditions to identify usability problems and to compare measures such as success
, rate, task time and user satisfaction with requirements. The goal of performance testing is
not to find bugs, but to eliminate bottlenecks and establish a baseline for future regression
testing.
To conduct performance testing is to engage in a carefully controlled process of
measurement and analysis. Ideally, the software under test is already stable enough so
that this process can proceed smoothly. A clearly defined set of expectations is essential
for meaningful performance testing.
For example, for a Web application, you need to know at least two things:
expected load in terms of concurrent users or HTTP connections
acceptable response time
Load testing:
Load testing is usually defined as the process of exercising the system under test by
feeding it the largest tasks it can operate with. Load testing is sometimes called volume
testing, or longevity/endurance testing
Examples of volume testing:
testing a word processor by editing a very large document
testing a printer by sending it a very large job
testing a mail server with thousands of users mailboxes
Examples of longevity/endurance testing:
testing a client-server application by running the client in a loop against the server over
an extended period of time
Goals of load testing:
Expose bugs that do not surface in cursory testing, such as memory management bugs,
memory leaks, buffer overflows, etc. Ensure that the application meets the performance
baseline established during Performance testing. This is done by running regression tests
against the application at a specified maximum load.
Although performance testing and load testing can seen similar, their goals are different.
On one hand, performance testing uses load testing techniques and tools for measurement
and benchmarking purposes and uses various load levels whereas load testing operates at
a predefined load level, the highest load that the system can accept while still functioning
properly.
Stress testing:
Stress testing is a form of testing that is used to determine the stability of a given system
or entity. This is designed to test the software with abnormal situations. Stress testing
attempts to find the limits at which the system will fail through abnormal quantity or
frequency of inputs.
Stress testing tries to break the system under test by overwhelming its resources or by
taking resources away from it (in which case it is sometimes called negative testing).
The main purpose behind this madness is to make sure that the system fails and recovers
gracefully — this quality is known as recoverability.
Stress testing does not break the system but instead it allows observing how the system
reacts to failure. Stress testing observes for the following.
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