350-601 Storage Network Practice Question
A Fibre Channel switch port is experiencing a high number of CRC errors. Which action should be taken to resolve this issue?
⚠ Common exam trap
Cisco often tests the misconception that CRC errors are caused by software or configuration issues (like zoning or buffer credits), when in fact they are almost always a physical-layer problem requiring cable or connector inspection and replacement.
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
✓
Replace the fiber optic cable between the switch and the storage device.
CRC errors in Fibre Channel typically indicate physical-layer issues such as damaged or dirty fiber optic cables, faulty connectors, or signal degradation. Replacing the cable directly addresses the most common root cause of CRC errors, which is physical-layer corruption of frames. Other options like reducing speed or adjusting buffer credits do not fix the underlying physical integrity problem.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Replace the fiber optic cable between the switch and the storage device.
Why this is correct
CRC errors typically indicate physical layer problems like bad cables.
- ✗
Reduce the port speed to 2 Gbps.
Why it's wrong here
Slowing down might reduce errors but doesn't address root cause.
- ✗
Reconfigure the zone to include only the affected device.
Why it's wrong here
Zoning changes do not affect CRC errors.
- ✗
Increase the buffer credits on the port.
Why it's wrong here
Buffer credits relate to flow control, not CRC errors.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-601 exam.