Welcome to the Online Study List (OSL)

Online Study List (OSL) is a virtual email community of network engineering professionals working on various networking certifications with a primary focus on Cisco's CCIE Routing and Switching (R&S) Lab, CCIE Voice Lab, CCIE Security Lab, CCIE Wireless Lab, CCIE Service Provider Lab, CCIE Data Center Lab, and the CCDE (Cisco Certified Design Expert) certification(s). We are a SPAM-Free community of professionals that share the same common goal - to pass certification exams or lab exams and enhance our professional career


Subscribe to become a list member, select the certification you're pursuing below.