MCSA and CCNA are the most highly valued certifications in the IT business. Both scopes and opportunities are available through MCSA. However, if you want to pursue a career in networking and security, the CCNA certification will give you more credibility and awareness, and you will have to pass exams to acquire it. While the CCNA will provide you additional power as a network administrator, the MCSA will allow you to cement your role as a system administrator.