CAMBRIDGE IGCSE Topic 3.4 Internet Protocol (IP) address, IPv4 and IPv6 Also in this topic... CAMBRIDGE IGCSE Topic 3.1 Purpose of the components in a CPU CAMBRIDGE IGCSE Topic 3.1 Fetch-decode-execute cycle CAMBRIDGE IGCSE Topic 3.1 CPU instruction sets CAMBRIDGE IGCSE Topic 3.1 Embedded systems CAMBRIDGE IGCSE Topic 3.3 Virutal memory