About CCDA certification: CCDA - Cisco Certified Design Associate is an entry level certification, similar to CCNA. Getting CCDA certified ensures that the candidate has enough knowledge to plan, design, and configure simple routed WAN and switched LAN networks using Cisco products. CCDP - Cisco Certified Design Professional is the next level of certification offered in the design track. No pre-qualification is necessary to take CCDA exam.  640-441 is the only exam necessary to pass for obtaining CCDA certification. Please visit the product page at: http://www.simulationexams.com/exam_details/ccda.htm