how long are the combined ieee 802.3 and llc headers compared to the dix ethernet headers? you can use wireshark to work this out. note that the trailer/padding and checksum may be shown as part of the header, but they come at the end of the frame. 2. how does the receiving computer know whether the frame is dix ethernet or ieee 802.3? hint: you may need to both use wireshark to look at packet examples and read your text near where the ethernet formats are described. 3. if ieee 802.3 has no type field,