$12$ Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? $($Choose two.$)$

integrates Layer $2$ flows between $10$ Gigabit Ethernet over fiber and $1$ Gigabit Ethernet over copper

places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame

applies source and destination MAC addresses to Ethernet frame

implements CSMA$/$CD over l$$gacy shared h$$lf$-$d$$plex media

adds Ethernet control information to network protocol data