Understanding Cisco Cybersecurity Fundamentals (SECFND, legacy) — Question 34

When using the 802.1Q frame tagging protocol, how much additional overhead does the protocol add to the frame structure?

Answer options

• A. 8 bytes
• B. 4 bytes
• C. 2 bytes
• D. 16 bytes
• E. no impact to frame overhead

Correct answer: B

Explanation

The correct answer is B, as the 802.1Q protocol adds 4 bytes of overhead to each frame for tagging. Other options are incorrect because 8 bytes, 2 bytes, and 16 bytes do not accurately reflect the overhead introduced by the protocol, and 'no impact to frame overhead' is incorrect since there is a measurable increase.