PP Presentation
- DLL doesn’t worry about which other IMP [network layer]
- DLL doesn’t worry about how to xmit bits [physical layer]
- frame = block of data
- frame -> sync bits, header, info field, error checking.
- header -> kind, seq, ack.
- seq = sequence number.
- kind = classification
- ack = acknowledge (used in two way communications)
- DLL is layer 2