Answer:
To speak to something means to provide evidence for something.
In the same way that it is logical to expect that an examination be used as a test to check whether or not a student has actually applied themselves to a subject, a job seeker must be able to defend the claims on their resume at an interview.
One source (website) that relates how to speak about ones resume at an interview is : thebalancecareers. It has has a .com extension.
Some of the tips mentioned therein are:
1. One must be selective about what they share: It is important to share details of ones experience that are only relevant to the current job. There is no relationship between musicial prowess for instance and an accounting job.
2. One must focused on their accomplishments: Accomplishments are very critical. They are a great pointer ones capabilities and or where they can add value. It is important to also describe these details with passion.
Cheers
Cheers!