Job analysis is a systematic process of gathering data about job roles and requirements. This data can be collected through observation, interviews, questionnaires, and records. The results of job analysis inform the recruitment and selection process. Recruitment strategies include both external methods like advertisements and internal promotions. Selection aims to choose the best candidates through testing, interviews, and evaluating qualifications. While job analysis and screening methods are important, there are also limitations in predicting how candidates will perform once hired.