|  | 7.4 | Layer 2 Devices
| 7.4.2 | NIC Layer 2 operations
NICs perform important Layer 2 data link layer functions, such as the following: logical link control - communicates with upper layers in the computer naming - provides a unique MAC address identifier framing - part of the encapsulation process, packaging the bits for transport Media Access Control (MAC) - provides structured access to shared access media signaling - creates signals and interface with the media by using built-in transceivers