Here you can take free online tests covering your favorite technical areas. The result won't be stored due to the fact that all tests are experimental and will be rearranged. Nevertheless, passing these assessment tests is a good practice for several reasons:

• Verify and refresh your insight into technology
• Prepare for other certifications and exams
• Figure out your strong and weak areas
• Just have a fun

The list of tests:

• Java

• C++

• PHP 5