Which switch mode operation reads only the first 64 bytes before making a switching decision?

Fragment-free mode reads the first 64 bytes and deems the frame intact and forwardable. This is because most collisions that would create frame fragments happen within the first 64 bytes of a frame. This method of switching is often found on SOHO switching equipment. Store-and-forward mode is the default mode for mode edge switching equipment. Store-and-forward receives the frame, calculates the CRC, and then makes a forwarding decision. Cut-through mode allows the switch to make a forward/filter decision immediately after the destination MAC address is received. Fast switching is a method in which a caching table is created for MAC addresses received so that switching can be made faster.