Project management, delivery and agile related

a) Given a situation where time,cost & resources are fixed and the technical architect team has taken more than 1 month to get a customer sign off then how can you complete the project on time. What would be your questions to the tech team. b) What is the agile method of estimation to be followed for a project. c) How did you manage a project technically. d) What would the Agile team comprise of ? e) How would you manage an Agile project.