If the Length/Type of an Ethernet data frame is 0x8100. Which of the following statements is correct?

Question

Options

• AThere is always a UDP header in the upper layer of each data frame
• BThe upper layer of a data frame must exist IP header
• CThere is always a TCP header in the upper layer of each data frame
• DEach data frame must carry VLAN TAG

• A
  8% (3)
• B
  75% (27)
• C
  3% (1)
• D
  14% (5)

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