Answer / swetcha

Black box testing is a build level testing technique to
validate the internal processing depends on external
interface.
When we have to validate an application build the
testing team validates through a set of black box testing
techniques:

1.usability testing:whether it is user friendly or not...
2.Functional testing:It is mandatory as we have to meet
correctness in every functionality wrt to customer
reqirements
3.Performance testing:we concentrate on speed of processing
4.Security testing:we concentrate on the privacy to user
operations....like authorisation,access
control,encryption/decryption...etc.,

Answer / muralidharan

The blck box test techniques are
1. Equivalence partioning (EP)
2. Boundary Value analysis(BVA)
3. Error guessing.
Some of the testing types followed in testing
are,funtionality testing and non functionlity testing

Muralidharan

dharanmu@yahoo.com

Answer / shilpa s

Testing techinique can be used to effectively desgin
efficient test cases.These techinique can be grouped into
blockbox and white box testing.
BlockBox testing techiniques:
when creating block box test cases , the input data used is
critical. Three successful techiniques or managing the
amount of input sata reuires include:

1.Equivalance partitioning.
2. Boundary Analysis.
3.Error guessing.

EQUIVALANCE PARTITIONING:
Euivalance partitioning is a techinique for testing
equivalance classes rather than undertaking exhaustive
testing of each value of the larger class. for example
a program which edit credit limits within a given range
(1,000 -1,500) would have three equivalance classes;
< 1,000 ( invalid)
Between 1,000 and 1,500 ( valid)
> 1,500 ( in valid)

BOUNDARY ANALYSIS:
A techinique that consist of developing test cases and data
that focus on the input and output boundaries of a given
function. In same credit limit example, boundary analysis
would test:

Low boundary +/- one(999 and 1,001)
on the boundary ( 1,000 and 1, 500)
Upper boundary +/- one(1,499 and 1,501)

ERROR GUESSING:
Test cases can be developed based upon the intuition and
experience of the tester . For example in an example where
one of the inputs is the date, a tester may try february
29, 2000

Answer / rajeshwar rao

Block box testing is nothing but funcnality testing. Block
box testing is done by the testers.
It focuses on the funcnality rather then the programming.

These testing are done by the user perspective.
In these blockbox testing some of these aspects will be
considered.
Incorrect initialization

Answer / guest

Dear RHSReddy,
The questions you are posting are already in
AllInterview testing category.Kindly search it and you will
get the answers for the questions posted by you.
thanks

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