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các bài kiểm tra của tất cả các loại khác nhau, từ các phép đo hiệu suất đơn giản để kiểm tra căng thẳng vô cùng phức tạp . QA kiểm tra thường sau chính thứcTrước đây, sự lựa chọn duy nhất cho bất cứ ai có nhu cầu thực hiện các phép đo ở cấp ứng dụn | Protocol Testing Secondly there are four distinct encryption modes none WEP TKIP and AES-CCMP . Again if the test equipment and DUT permit the four modes can be set up and run in turn without operator involvement. However most WLAN APs require manual intervention to switch them from one encryption mode to another so it is possible that the four modes will be tested in sequence i.e. treated as four separate test runs . This source of manual overhead can be avoided if the DUT itself can be configured from the same script that drives the tester. Finally the test must be performed with traffic flowing in the wireless-to-Ethernet the Ethernet-to-wireless and both directions. There are hence a very large number of combinations 1455 X 4 X 3 17460 in all . After all of this has been comprehended the sheer number of combinations will usually cause the QA department to realize that this is an excellent candidate for a scripted automated test. The script that is created should perform a traffic forwarding test at each of the combinations of test conditions referred to as a trial . Basically the script sets up the test equipment to generate traffic having the desired frame size encryption mode and traffic direction and then starts the traffic flowing after a specific trial duration or a pre-set number of transmitted frames the script stops the traffic and measures the difference between the number of frames transmitted to the DUT and the number of frames received from the DUT which should be zero if the trial has succeeded. Once the trial has completed a new set of test conditions -frame size encryption mode and traffic direction - is selected and the equipment set up accordingly and the next trial is run. A single functional test like the above can take quite a long time to complete even if it is scripted. However by the same token it also exercises a great deal of DUT functionality in a single test and can therefore expose many bugs and issues before the product is released.
