Abu Dhabi is now the first capital city in the world to be entirely covered with a fibre optic network, UAE telecom giant Etisalat has announced.The completion of this project has contributed to the UAE being ranked amongst the top five countries in the Arab world in the Network Readiness Index (NRI) and ranked 24th in the world according to the Global Information Technology Report 2011 issued by the World Economic Forum, outperforming many countries, an Etisalat statement said.