350-601 Storage Network Practice Question
A data center uses FCoE to consolidate storage and LAN traffic. Which IEEE standard ensures that FCoE frames are not dropped due to congestion by providing lossless Ethernet?
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)
Priority Flow Control (PFC, IEEE 802.1Qbb) creates lossless lanes by pausing traffic on specific priorities to prevent drops. ETS allocates bandwidth, and DCBX exchanges capabilities.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ETS (Enhanced Transmission Selection)
Why it's wrong here
ETS allocates bandwidth among traffic classes but does not guarantee losslessness.
- ✗
FIP (FCoE Initialization Protocol)
Why it's wrong here
FIP establishes FCoE virtual links but does not ensure losslessness.
- ✓
PFC (Priority Flow Control)
Why this is correct
PFC provides lossless Ethernet by pausing traffic per priority.
- ✗
DCBX (Data Center Bridging Exchange)
Why it's wrong here
DCBX discovers and configures DCB capabilities like PFC and ETS.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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