Percentage Skills? wtf?

Question

Programming

I often see how guys write in their portfolio skills as a percentage. Where do they get these numbers from? From the ceiling? Or do they pass tests, where they then issue a certificate with confirmation? What is usually supported by these figures?

Answer 1

Чаще всего от фонаря. Заказчики все равно не в куре.
Но ты можешь подойти с практической стороны: https://certification.mail.ru

Answer 2

Вы умеете разговаривать на английском? Оцените по пятибальной шкале)