During this testing tester validate how well our current 
project is able to supports on different types of hardware 
technologies like as different types of printers,n/w 
interface cord(NIC),topology etc.this testing is also 
called as hardware testing or portable testing

Yes sabitha is correct,Configuration testing is also 
called "Hardwarecompatabilitytesting",during this testing 
tester will test wether the s/w build is supporting 
different hardware technologies or not
Ex:printer,Scanners and topologies etc.,

Testing the software against the hardware or testing the
software against the software is called configuration testing

Configuration testing is the system testing of different 
variations of an integrated, blackbox application against 
its configurability requirements.

Plz correct me if i m wrong...
Regards..
Lokesh Kumar Chauhan 
lokesh_kumar_chauhan@yahoo.com
Mobile - 09350229669
Noida

Configuration testing is the process of checking the 
operation of the software you are testing with all these 
various types of hardware.

If you are starting for the configuration testing on a 
piece of software, we need to consider which of these 
configuration areas would be most closely tied to the 
program. A highly graphical computer game will require lots 
of attention to the video and sound areas. A greeting card 
program will be especially vulnerable to printer issues. A 
fax of communications program will need to be tested with 
numerous modems and network configuration.

Configuration testing is the process of testing a system 
under development on machines which have various 
combinations of hardware and software. 

In many situations the number of possible configurations is 
far too large to test. For example, suppose you are a 
member of a test team which working on some desktop user 
application. The number of combinations of operating system 
versions, memory sizes, hard drive types, CPUs alone could 
be enormous. If you target only 10 different operating 
system versions, 8 different memory sizes, 6 different hard 
drives, and 7 different CPUs, there are already 10 * 8 * 6 
* 7 = 3,360 different hardware configurations. 

Then if you add various software components such as Web 
browser version, anti-virus software, earlier versions of 
the system under development, the number of possible 
configurations quickly becomes unmanageable. Note that not 
all software development efforts necessarily face an 
unmanageable number of configurations. For example, 
software developed for specific, non-PC hardware devices 
may have only a handful of hardware and software 
configurations.

I think configuartion testing is nothing but testing or 
executing the build or application over various operating 
systems and different browsers.

correct me if i am wrong

Pavan Reddy

configuration testing is a harware components.so to give me 
job oppurunits.