If you are looking for your next role which involves an in-depth knowledge of Grafana then you will want to make sure that you have revised sufficiently beforehand. A: Grafana is an open-source data visualisation tool that is especially useful for visualising metrics data.
A: To export a Grafana dashboard make sure that you have selected the dashboard that you wish to share.
A: In order to backup your Grafana dashboard you may wish to consider using an open-source tool such as the https://github.com/ysde/grafana-backup-tool.
A: To forward data to Grafana from different data sources you will need to navigate to "Data Sources" from the configuration menu.