In general, IT companies in order to keep the professional level of the certificate holder, and the IT certification certificate issued by the IT certification certificate is valid. However, the development strategy for the validity period of each company is not the same. It is generally divided into two types of fixed validity and unproductive periods, and the former, such as Cisco's certificates, generally 3 years (CCNA, CCDA, CCNP, CCDP) or 2 years (CCIe) failure. The Microsoft Certificate is a way of useless validity, and its certificate upgrade is mainly based on the upgrade of the operating system it developed. Then, someone may ask the Microsoft's Windows XP concept to fry very fire, will Microsoft will immediately launch Windows XP certification immediately?
In fact, everyone doesn't have to worry too much, like Microsoft's global big company, its mainstream products are updated, including the pre-publicity, medium-term promotion, post-sales strategy, such as certification, technical personnel Training, etc.. It is impossible to be like the current Windows 2000 until it has been launched for more than a year, but in the personal operating system, it has not exceeded the NT 4.0 market on the personal operating system. Considering its Windows 2000 development and promotion fees, Microsoft will not easily give up Windows 2000.
For Microsoft Certificates Validity Period, we can reveal the validity period of NT 4's MCSE. If you launch from NT4 certification, it is now valid for nearly five years. Since the current technology update is definitely fast than NT 4 era, we speculate that the validity period of Windows 2000 should be more than three years. In fact, Microsoft's validity period should be longer in all IT certifications, as many certified validity period is one year.