While Buhagiar's book focused heavily on traditional routing and switching (like OSPF, VLANs, and IPv4/IPv6), the newer exams reduced the focus on these areas to roughly 65% to make room for newer technologies like Automation and Programmability (10%) and Wireless LANs (10%).
Despite the 2020 changes, Buhagiar's work remains a benchmark for the rigorous style of Cisco's networking questions. His series has since evolved, with newer editions now covering the CCNA 200-301 objectives to reflect the current unified certification. Key Features of the Practice Tests CCNA Routing and Switching Practice Tests: Exam...
The book was released in April 2017 to help candidates master the "Routing and Switching" track, which was the most popular of the nine CCNA specializations at the time. It provided across seven unique 200-question tests, mapping exactly to the seven objective domains required for the composite 200-125 exam or the two-part ICND1/ICND2 path. The Evolution of the Exam While Buhagiar's book focused heavily on traditional routing