CCIE Data Center (legacy) — Question 74

Which statement is correct about the number of available QoS system classes in FCoE?

Answer options

• A. It's hard-set and cannot be disabled
• B. It's configurable, with an upper limit of 16
• C. It's hard-set but cannot disable best-effort and Fibre Channel
• D. It's hard-set but can disable all but one class
• E. It's configurable with an upper limit of eight

Correct answer: C

Explanation

The correct answer is C because the QoS system classes in FCoE are indeed hard-set, meaning they cannot be changed, and the best-effort and Fibre Channel classes must remain enabled. Options A, B, D, and E misrepresent the configurability and limitations of the QoS system classes in FCoE.