The answers are;
highlights job roles and skills rather than positions
contains data relevant to the position for which you are applying
based on data obtained from a career portfolio
Skills and achievements in a functional resume are the focal points. This is the reason why a functional resume is also known as the skills-based resume. This resume is not commonly used. However, job seekers who are changing careers or have gaps in their employment history typically use a functional resume to emphasize their capabilities. On the contrast, a traditional chronological resume shows a timeline of reverse work experience with brief explanations of each job.