Answer / v.lokesh

functional defects-means
Take gmail login as expample: If the given details is tat
is user name and password are invalid then login page
should not open because main behaviour of the application
is not working,this is the founctional defect.mainly it
comes under Functional testing

Usability comes under Non-Functional Testing
(characteristics and features),whether the application is
userfriendly,easy to use,understand,operate
example:ATM machine-a normal person can access the
application because it is userfriendly..

Answer / mudaseer

And example of the difference between usability and functional
defect will be that of a Login
window. A usability defect would be when a user enters a valid
user name, but invalid password,
and the application gives an error message of “Please enter a
valid user name” when it should
have been “Please enter a valid password.” A functionality
defect would be if in the same
scenario, the application accepts the name and the password,
though one is incorrect. if any doubt plz mail me
mudaseer20@gmail.com

Answer / mudaseer

for example in gmail sign up page i m entering all the details but think i enter password as hhhhhh123
and confirm password as hhhhh123 here it will display as password mismatch and sometimes in sign up page i miss fields
in gmail sign up like prove that you are not robot and click on submit it should display required field can't be left blank

function means

for example i click on draft it should display draft not sent items page

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