testing is a process in which to check whether the s/w 
works properly or not.


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testing is a process to prove that s/w works corectly.

there are so many types of testing.
i will tell some.
1.smoke/sanity testing
2.regression testing
3.re-testing.
4.alpha/beta testing
5.static/dynamic testing
6.adhoc testing
7.security testing
8.mutation testing
9.usabitlity testing
10.monkey testing

Testing: Testing is the execution of programme under 
control condition with the INTENT OF FINDING ERRORS. 

Types of Testing:
i)Black Box Testing
ii)white Box Testing
iii)Grey Box Testing

Testing:
         Testing is a process in which the defects are
identified,isolated(separated),subjectedfor rectification &
ensured that the product is defect free in order to produce
a quality productin the end and hense customer satisfaction.

Types of testing:
there are 18 types
1.smoke testing/sanity testing
2.regression testing.
3.retesting.
4.alpha testing.
5.beta testing.
6.monkey testing.
7.static testing.
8.dynamic testing.
9.installation testing.
10.compatability testing.
11.end-to-end testing.
12.usability testing.
13.exploratory testing.
14.port testing.
15.reliability testing.
16.mutation testing.
17.security testing.
18.adhoc testing.

testing is executing a program with an intent of finiding 
defects. there are three types
     1. white box testing
     2. Black box testing
     3. Grey box testing

there are two types of testings 
 
1.  static testing

2.  Dynamic testing