Comprehensive coverage of core networking concepts: The guide reviews essentials like network topology, data encapsulation, OSI layers, VPNs, NAT, WAN, proxy servers — questions often asked to test fundamental understanding. Sprintzeal.com Progressively advanced topics: For more seasoned candidates, there are questions on fault-tolerance systems, encryption, multicast routing, tu... https://www.sprintzeal.com/blog/network-engineer-interview-questions