RHCSA is an entry-level certification that focuses on actual competencies at system administration, including installation and configuration of a Red Hat Enterprise Linux system and attach it to a live network running network services. To achieve the RHCSA certification the student must pass EX200, a 2.5-hour hands-on lab exam. The minimum passing score for the exam is 210 out of 300 possible points (70%). There is no prerequisite for the exam, but Red Hat recommends preparing for the exam by taking courses in Red Hat System Administration (RH124 or RH134) if one does not have previous experience. RHCSA was launched in 2002 as Red Hat Certified Technician (RHCT). As of July 2009 there were 30,000 RHCTs. In November 2010 it was renamed to RHCSA.
RHCVA is a certification that focuses on Virtualization administration. To achieve the RHCVA certification the student must pass EX318, a 3-hour hands-on lab exam. There is no prerequisite for the exam, but Red Hat recommends preparing for the exam by taking the respective course, RH318, and by obtaining the RHCSA certification described above. The exam also requires knowledge in using and installing Microsoft Windows operating systems. RHCVA was Launched in November 2009
How each browser is and plans to implement PWA support
Raja is a front-end developer for individuals and companies who are lost in the sea of modern web and user experiencestandards. He has a quarter century of web development experience building a wide variety of web sites and applications.In recent years, he focused on responsive web design, single-page web applications and web performance optimization.
Raja runs a small web consulting company, focusing on user-first web applications that operate on all devices. It offers web development and analysis to help companies engage end users and operate more efficiently. He hasbuilt modern web experiences for hundreds of businesses and individuals, ranging from mom and pop shops to major corporatebrands.
Raja authored three web development books including, High Performance Single Page Web Applications. He is a Microsoft MVP, ASP Insider and Edge User Agent. Raja regularly speaks at user groups, code camps and developerconferences. His insights and opinions have been featured in various magazines and popular podcasts.
core skill for the New Linux System Administrator
Building command Line skills for Linux Administrators
Advanced Skills for the Experienced Linux Administrator