A sample CASPer test is available to help you prepare for the actual CASPer test, and to check your computer’s system requirements.
If you can complete the sample CASPer test, your computer and internet connection are likely fine for the actual CASPer test (assuming you have no internet connectivity issues, or equipment failures on the test day of course!).
The sample CASPer test closely mirrors the real test in format and experience (embedded security features are not implemented in sample). Note that it is only 3 sections long, whereas the real CASPer test is 12 sections.