SimulationExams.com released new CCDA 200-310 practice tests (http://www.simulationexams.com/exam-details/ccda.htm).
The practice tests have 250+ most relevant questions with flash card explanations.
You may download the free demo version here:
http://www.simulationexams.com/downloads/cisco-tests/ccda/ccda-practicetest-download.htm (http://www.simulationexams.com/downloads/cisco-tests/ccda/ccda-practicetest-download.htm)
The older version has been retired and no more available.