No purely online assessment system can prevent all forms of cheating. Unless you are giving the test as a proctored computer lab test, you should consider Blackboard assessments tantamount to a take-home exam. If you are not comfortable with take-home exams, you should not be using Blackboard for assessments.
Creating and Importing Questions Pools
Blackboard Question Pools can best be thought of as test banks.
Creating Tests Using Pools
Tests use the questions that reside in Questions Pools, i.e., Test Banks. For example, with Question Pools you can assemble a “cumulative” mid-term or final examination; randomly assigning different questions to different users, so that no two students are seeing the same questions in the same order.