What information do OSI Layer 2 headers typically contain?

OSI Layer 2, also known as the Data Link layer, is crucial for facilitating communication between devices on the same local area network (LAN). The headers that are utilized at this layer primarily contain Media Access Control (MAC) addresses, which are unique identifiers assigned to network interfaces for communications on the physical network segment. This information is essential for directing data frames to the correct destination within a local network.

In addition to MAC addresses, Layer 2 headers include error-checking data, typically in the form of a Frame Check Sequence (FCS). This is used to ensure the integrity of the data being transmitted, allowing the receiving device to determine if any errors occurred during transmission. In summary, the information contained within Layer 2 headers is vital for both addressing and verifying the successful delivery of data between devices in a local network environment. This is why the option detailing MAC addresses and error-checking data is the correct choice.