350-601 Storage Network Practice Question
An engineer is deploying FCoE in a data center and must ensure lossless transport for Fibre Channel traffic over Ethernet. The engineer configures Priority Flow Control (PFC) on the DCB-enabled switches. However, FCoE initialization fails. Which additional DCB feature is required to enable FCoE devices to discover and negotiate PFC settings with the switch?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
DCBX (Data Center Bridging Exchange)
DCBX (Data Center Bridging Exchange) is used to exchange DCB parameters between peers, including PFC and ETS. FIP uses DCBX to discover FCoE-capable switches and negotiate PFC.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
DCBX (Data Center Bridging Exchange)
Why this is correct
DCBX is essential for FCoE to discover and negotiate PFC and other DCB capabilities.
- ✗
CN (Congestion Notification)
Why it's wrong here
CN is not a standard DCB feature required for FCoE.
- ✗
ETS (Enhanced Transmission Selection)
Why it's wrong here
ETS is for bandwidth allocation among traffic classes, not for exchanging PFC settings.
- ✗
QoS (Quality of Service)
Why it's wrong here
QoS is a broader concept; DCBX specifically handles parameter exchange.
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