Although not neccessary however preferablya n MCSA candidate should have one to twelve months of experience in working with a desktop operating system, a network operating system, and an existing network infrastructure. 

Why get certified?

Earning a Microsoft Certification validates your proven experience and knowledge in using Microsoft products and solutions. Designed to be relevant in today's rapidly changing IT marketplace, Microsoft Certifications help you utilize evolving technologies, fine-tune your troubleshooting skills, and improve your job satisfaction.

Whether you are new to technology, changing jobs, or a seasoned IT professional, becoming certified demonstrates to customers, peers, and employers that you are committed to advancing your skills and taking on greater challenges. In addition, certification provides you with access to exclusive Microsoft Certified Professional (MCP) resources and benefits, including opportunities to connect with a vast, global network of MCPs.