Configure switches and end devices to provide access to local and remote network resources. Explain how physical and data link layer protocols support the operation of Ethernet in a switched network. Configure routers to enable end-to-end connectivity between remote devices. Create IPv4 and IPv6 addressing schemes and verify network connectivity between devices Explain how the upper layers of the OSI model support network applications. Configure a small network with security best practices. Troubleshoot connectivity in a small network.