The technological developments and advancements that have happened over the past three to four decades have changed the whole upside down, new fields of work and study have developed, communication among people has improved like never before , information transfer has become unbelievably quick. One has to thank computes for all this. Due to their unbelievably wide usage more and more people and companies are taking up computers for their use ands the need for professional to be able to manage these computers in a proper manner is the need of the hour. Computers are complicated machinery too unlike others. They need good technicians who could make the correct changes in them by applying their theoretical and practical knowledge. As the whole world uses computers for their most essential work, it would become highly difficult if the systems aren't maintained and treated properly and hence to standardize the people who could maintain computers certifications have been created.
One such certification that is recognized to be of the highest quality is the compTia's A+ certification. This certification is widely accepted by people around the globe and has become the standard for people who need to get into the computer field. This certification consists of an exam named 220-602 which a person has to clear to be able to clear the A+ certification. The examination paves a way for higher certifications such as CCNA. To be able to clear the 220-602 examination one has to have basic knowledge about various fields related to computer such as networking and other computer related fields such as operating systems, security. One has to gain good knowledge about various computer devices such as printers, scanners. It also needs a person to have knowledge about the different system types such as portable systems, laptops, servers etc.