Final answer:
The question involves calculating the data link layer transmission efficiency using Ethernet, including the consideration of a standard IPv4 header without options. Efficiency is determined by dividing the data payload size by the total transmitted data, including payload and all overhead, and multiplying by 100%.
Step-by-step explanation:
The student's question pertains to the calculation of efficiency at the data link layer when using Ethernet, considering an IP header without options. To calculate the efficiency, we would consider the size of the data payload in relation to the total amount of data transmitted, which includes the payload, header, trailer, and any other overhead introduced by the protocol. For standard Ethernet, the overhead would consist of the Ethernet frame headers and trailers.
Assuming we are transmitting a standard IPv4 packet without any options, the IP header would be 20 bytes. Ethernet frames add 18 bytes of overhead for the header and trailer (14 bytes for the header and 4 for the trailer), not considering the potential 8-byte preamble and start frame delimiter (SFD). To calculate the efficiency, you would use the formula:
Efficiency = (Data Payload Size / (Data Payload Size + Protocol Overhead)) * 100%
Where the protocol overhead includes the IP header and the Ethernet frame overhead.