Which of the following is true about the Ethernet FCS field?

IT Questions BankCategory: CCNAWhich of the following is true about the Ethernet FCS field?

Which of the following is true about the Ethernet FCS field?

  • Ethernet uses FCS for error recovery.
  • It is 2 bytes long.
  • It resides in the Ethernet trailer, not the Ethernet header.
  • It is used for encryption.

Explanation: The 4-byte Ethernet FCS field, found in the Ethernet trailer, allows the receiving node to see what the sending node computed with a math formula that is a key part of the error-detection process. Note that Ethernet defines the process of detecting errors (error detection), but not error recovery.

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