Cisco 100-105 Exam

Which two statements about 802.1Q are true? (Choose two.)

  • A. It is an open-standard trunking protocol
  • B. It is a Cisco-proprietary trunking protocol
  • C. It inserts a 4-byte identifying tag in the Ethernet frame after the source MAC address field.
  • D. It encapsulates the original data frame inside a trunking header.
  • E. It uses a 20-bit label to identify packets within a trunk.
Answer: Option A. C.
Explanation: 

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