프로그래밍
OCJP (Oracle Certification Program)
https://en.wikipedia.org/wiki/Oracle_Certification_Program
MCSD (Microsoft Certified Solutions Developer)
https://en.wikipedia.org/wiki/Microsoft_Certified_Professional#Microsoft_Certified_Solutions_Developer_.28MCSD.29
MCPD (Microsoft Certified Professional Developer)
네트워크
CCNA (Cisco Certified Network Associate)
https://en.wikipedia.org/wiki/CCNA
CCNP A Cisco certified network professional
https://en.wikipedia.org/wiki/CCNP
CCIE The Cisco Certified Internetwork Expert
https://en.wikipedia.org/wiki/CCIE_Certification
데이타베이스
Oracle Certified Associate (OCA)
https://en.wikipedia.org/wiki/Oracle_Certification_Program
보안
CISA Certified Information Systems Auditor
https://en.wikipedia.org/wiki/Certified_Information_Systems_Auditor
서버
MCSE
https://en.wikipedia.org/wiki/Microsoft_Certified_Professional
RHCE Red Hat Certification Program
https://en.wikipedia.org/wiki/Red_Hat_Certification_Program
관리자
OCNA ..