CCNA is the abbreviation of Cisco Certified Network Associate certification from Cisco.
In speech and in writing, this certification is properly referred to by the initials CCNA rather than the full name.
CCNA: Cisco Certified Network Associate was retired as stand-alone certification and was replaced by four CCNA concentrations.
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MCSE: Microsoft Certifications recognize and validate your real-world IT skills, support the certified community by providing access to unique resources, and offer a life-long career path of IT skills development.
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MCSD: The Microsoft Certified Solution Developer (MCSD) on Microsoft .NET credential is the top-level certification for advanced developers who design and develop leading-edge enterprise solutions by using Microsoft development tools and technologies in addition to the Microsoft .NET Framework 1.0 and Microsoft .NET Framework 1.1.
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