What is contained in the trailer of a data-link frame?
- logical address
- physical address
- data
- error detection
Answers Explanation & Hints: The trailer in a data-link frame contains error detection information that is pertinent to the frame included in the FCS field. The header contains control information, such as the addressing, while the area that is indicated by the word “data” includes the data, transport layer PDU, and the IP header.