Answer
Black box testing is the software testing method which is used to test the software without knowing the internal structure of code.
White/Glass box testing is the software testing method in which tester knows the internal structure of the software which is going to be tested.
A detailed comparison is given in the picture attached.
Work Step by Step
White/Glass box testing is the software testing method in which tester knows the internal structure of the software which is going to be tested.
A detailed comparison is given in the picture attached.