What is the role of job analysis in recruitment?

job analysis pertains to the job per se, its nature and proximity involves in the structuring of the job, the job designing portion to specify a plan, what really is the organizations trying to achieve, the determination of the required skills or expertise for specific job, if ever there is a need of additional hr requirements to develop the production scheme and finally will be the provision of specific course of action or action plans to undertake in order to have an effective recruiting and selecting of employees.