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Exam 300-208 topic 1 question 225 discussion

Actual exam question from Cisco's 300-208
Question #: 225
Topic #: 1
[All 300-208 Questions]

Which two additional fields are added to an Ethernet frame when implementing MACsec? (Choose two.)

  • A. Encapsulating security payload
  • B. Authentication host mode
  • C. Security tag
  • D. Authentication header
  • E. Message authentication code
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Suggested Answer: CE 🗳️
by eecckss at Nov. 22, 2019, 2:45 a.m.

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eecckss
5 years, 7 months ago
While MACsec is based on the standard Ethernet frame format, an additional 16-byte MACsec Security Tag or SecTAG was included, as well as a 16-byte Integrity Check Value (ICV) at the end of the frame. Walking through the MACsec frame format depicted in Figure 4, there are no changes to the destination and source MAC address. @https://www.cisco.com/c/dam/en/us/td/docs/solutions/Enterprise/Security/MACsec/WP-High-Speed-WAN-Encrypt-MACsec.pdf
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