I just read a question related to ISTQB (Foundation Level) from a paper which is available in market :
Q - What type of testing will you perform on internet banking solution?
A. System integration
B. Functional testing
C. Non-functional testing.
D. Requirements testing
And according to them answer is C. Non-functional testing.
I agree with the answer , but on the other hand, I am confused that do we not require all other testing for the same application? Please help me to clear this doubt.