This document includes questions and answers that pertain to the ARPA-E Request for Information Announcement entitled "Request for Information (RFI) on Energy Efficient Integrated Photonic Networking Technologies DE-FOA-0002134".  The full Request for Information (RFI) on Energy Efficient Integrated Photonic Networking Technologies and additional information can be found on the ARPA-E Funding Opportunity Exchange website (https://arpa-e-foa.energy.gov/).