Introduction Wi Fi started its journey as the technology but now Wi FI alliance is into business .its an association that provides certification in order to promote and evaluate the Wireless LAN technology. It has specific standards that integrates the key feature of the interpretability .when any product confirms and meet the requirement of the standards it gets the certification approved by the WI FI Alliance. Not every f the IEEE standards apply or submit the complained device to achieve the certification. Its mostly occur because of the cost process for the certification. The main implication is also the non conformity of the devices with the wi fi logo and compatibility. every product verified by the WI FI alliance has the logo or trademark of the wi fi alliance eon it which provide t5he evidence that concerned product hold the required quality and is standardized to achieve the network requirements.

Historical Background
Before the commencement of the wi fi Certification process. There were some problems that were related o the product sub standardization, in compatibility and interpretability. Because the only organization for standard was IEE which did not had and provision for testing the quality compliance of the standards. In 1990 the manufacturers of the standard 802.11 provide an endorsement for the Wireless Ethernet compatibility Alliance (WECA) and introduced a new bad name called WI FI. Many organizations were involved in that alliance including the Lucent, Sony Corporation, Symbol Technologies, Aironet, Panasonic ,Apple Inc and Motorola. The certification charter of this formed organization was to test and certify the interpretability of the products in order to promote the technology.
How Wi Fi Certification is Processed.
The entire process of the Wi Fi certification undergoes the series of the steps to get the certified wireless LAN product. The process involves its own trademarks, business strategies, certified logo, security protocols and data interpretation techniques that evaluate the product by using the different protocols for power management and standardization. Wi fi device have to clear the rest for running on common application and operating systems, multiple usage and reliability.
The process of Wi Fi certification involves three forms of test phases that lead to the successful interpretability of the certified product.
Compatibility on the whole. The devices are connected to the different platforms and applications in order to test its compatibility and compliance with the different applications provided by the different vendors. It is also observed that certified product must be compatible with more than 3 structural applications
Another important thing that is kept in mind is that a certified device is owned and purchased by the multiple users. It means that product submitted for the certification is the need of the customers.
Conformity. Another test that every product must under is the conformance of the production all the critical components of IEEE 802.11 standard. It’s basically a procedure of evaluating a device as a standalone individual that how far a product can flourish if restricted to the certain level.
Performance. Last and final test of the product for the Wi FI certification is the performance evaluation test. In which performance and reliability, maintenance and future of the product is concerned .it is assumed that product must fulfill the customer demand and also satisfy the existing need.
List of Wi fi Certifications
There area series of the certification provide by the Wi fi Alliance. Some of the major ones are.

• Core MAC/PHY interpretability over 802.11-801.11n.
• Wi-Fi Protected Access(tm)2 (WPA2) security.

• 802.11i. WPA2 is available in two types: WPA2-Personal for consumer use, and WPA2 Enterprise, in addition EAP authentication.