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[[Red Hat]] company offers different level of certification programs. Certifications can be validated through Red Hat webpage,<ref>{{cite web|url=https://www.redhat.com/rhtapps/services/verify/?certId=|title=Verify a Red Hat Certified Professional - redhat.com|website=www.redhat.com}}</ref> and expire after 3 years.<ref>http://linuxlearningcentre.com/rhexams/certification-validity/</ref>
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=== Red Hat Certified System Administrator (RHCSA) ===
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