CCDA 640-863 specialized professionals can devise routed in addition to switched network infrastructures as well as services involving LAN, WAN, plus broadband access for businesses and large companies. 70-293 is a networking test that is a pre requsite for MCSE. 70-536 is the Microsoft .NET Framework and Application Development Foundation exam. 220-602 is the basic Comptia A+ exam which gives you fundamental knowledge of networking. 1Y0-456 test is a prerequisite for a CCEA for Access Suite 4.0 documentation and a constraint for a CCIA for Access Suite 4.0 courses.