https://blog.gongquiz.com/2021/01/21/%ed%85%8c%ed%81%ac%eb%8b%88%ec%bb%ac-%ec%8a%a4%ed%82%ac%ec%a6%88technical-skills%ec%97%90-%ea%b4%80%ed%95%9c-%ec%84%a4%eb%aa%85%ec%9c%bc%eb%a1%9c-%ec%98%b3%ec%9d%80-%ea%b2%83%ec%9d%80-%ec%82%b0/