What will happen when an ethereum node loss internet connection?

Question

1. Will it reconnect to the ethereum network upon establishing internet connection again automatically and sync Data ?
2. Can we perform transaction and calls on the offline(no internet connection) ethereum node specifically ? suppose we have direct access to that particaular node and we can directly intereact with it.

Answer 1

1- once reconnected your node will continue syncing data (downloading the missing blocks)

2- you can create a transaction offline and sign it then broadcast it later when the internet comes back. you may use this offline node to call a constant function (if it has a synced version of the blockchain) and get back the calculation result.