How is a limited narrator different from an omniscient narrator?

There are various narrator types such as omniscient and limited. An omniscient narrator is aware of the thoughts and feelings of all of the characters in the story while a limited narrator is only aware of their own thoughts, feelings, and knowledge about various situations and the other characters.

1) Viola enters Orsino's court dressed as a male.
2) Olivia asks Cesario about his parentage.
3) Malvolio makes a fool of himself in front of Olivia.
4) Sebastian reveals to Antonio that he has a twin sister.
5) Feste returns the ring to Cesario that Orsino had given to Olivia.
6) Antonio offers to take Cesario's place in the duel.