BCS CTFL4 Answers

Achieving full statement coverage and full branch coverage for a software product means that such software product has been fully tested and there are no remaining bugs within the code 

Code-related white-box test techniques are not required to measure the actual code coverage achieved by black-box testing, as code coverage can be measured using the coverage criteria associated with black-box test techniques

Branch coverage is the most thorough code-related white-box test technique, and therefore applicable standards prescribe achieving full branch coverage at the highest safety levels for safety-critical systems

Code-related white-box test techniques provide an objective measure of coverage and can be used to complement black-box test techniques to increase confidence in the code

Functional testing focuses on what the system should do while non-functional testing on the internal structure of the system

Testers who perform functional tests are generally expected to have more technical skills than testers who perform non-functional tests 

The test techniques that can be used to design white-box tests are described in the ISO/IEC 25010 standard

White-box testing allows suggesting test cases for increasing coverage levels which are based on objective measures

Black-box testing can benefit from using code-related white-box test techniques to increase confidence in the code.