The largest possible data field in an Ethernet frame, known as the Maximum Transmission Unit (MTU), is typically 1500 bytes for standard Ethernet frames. This includes the payload or data portion, while the total frame size can reach up to 1518 bytes when including headers and trailers. In some specialized Ethernet variants, such as Jumbo Frames, the MTU can be increased to 9000 bytes or more, but this is not universally supported across all networks.
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c) Check frame sequence. The FCS (4 bytes in length) field is used to detect errors in a frame
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In an Ethernet frame, FCS stands for "Frame Check Sequence". It is a four-octet field used to verify that the frame was received without loss or error. The method used for verification is known as a Cyclic Redundancy Check (CRC).
1 byte for frame delimiter field in IEEE 802.3
The Frame Check Sequence (FCS) field of an Ethernet II frame is 4 bytes (32 bits) in size. It is located at the end of the frame and is used for error checking to ensure data integrity during transmission. The FCS helps detect any corruption that may occur in the frame as it travels across the network.
1)Source and destination MAC Address 2)FCS Field
In an Ethernet frame, the field used for synchronization is the preamble. The preamble consists of 7 bytes of alternating 1s and 0s, followed by a 1-byte Start Frame Delimiter (SFD). This sequence allows the receiving device to synchronize its clock to the incoming signal, ensuring proper interpretation of the subsequent data in the frame.
The Ethernet (II) frame uses the Frame Check Sequence (FCS) field for error detection. This field is a 4-byte cyclic redundancy check (CRC) value that is calculated based on the frame's contents before transmission. When the frame is received, the receiving device calculates the CRC again and compares it to the FCS value; if they do not match, an error is detected, indicating that the frame may have been corrupted during transmission.