?ExplanationWhen collision condition is detected In Ethernet CSMA/CD, the station stops transmitting the ongoing frame, transmits a jam signal, and then waits for a random time interval before trying to resend the frame.Therefore In Ethernet CSMA/CD, the special bit sequence is transmitted by media access management to handle collision is called jam signalAdditional InformationPreamble:The first field of the 802.3 frame contains 7 bytes (56 bits) of alternating Os and Is that alerts the receiving system to the coming frame and enable it to synchronize its input timing.The pattern provides only an alert and a timing pulse. The 56-bit pattern allows the stations to miss some bits at the beginning of the frame. The preamble is added at the physical layer and is not (formally) part of the frame.