350-601 Storage Network Practice Question
A network engineer is configuring FCoE on a Cisco Nexus switch. Which two DCB features must be enabled to support lossless Ethernet for FCoE traffic? (Choose two.)
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
✓
PFC (Priority Flow Control)
PFC (Priority Flow Control) provides per-priority pause to prevent frame loss, and ETS (Enhanced Transmission Selection) allocates bandwidth among traffic classes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
PFC (Priority Flow Control)
Why this is correct
PFC ensures no-loss for FCoE traffic.
- ✗
IGMP snooping
Why it's wrong here
IGMP snooping optimizes multicast, not lossless.
- ✗
STP (Spanning Tree Protocol)
Why it's wrong here
STP prevents loops but not lossless behavior.
- ✓
ETS (Enhanced Transmission Selection)
Why this is correct
ETS guarantees bandwidth for FCoE.
- ✗
LACP (Link Aggregation Control Protocol)
Why it's wrong here
LACP aggregates links, not related to lossless.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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