350-601 Storage Network Practice Question
A Fibre Channel switch is experiencing high latency on a specific ISL. The link is operating at 16 Gbps and has high utilization. Which action will most likely reduce latency?
⚠ Common exam trap
Cisco often tests the misconception that trunking or flow control adjustments can solve bandwidth-related latency, when in fact only increasing aggregate bandwidth (via port channels) reduces queuing delay caused by high utilization.
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
✓
Add an additional ISL and configure a port channel.
Adding an additional ISL and configuring a port channel increases the aggregate bandwidth between the two switches, reducing per-link utilization and thus lowering queuing latency. This directly addresses the root cause—high utilization on a single 16 Gbps link—by distributing traffic across multiple physical links, which also provides load balancing and redundancy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reduce the buffer credit count.
Why it's wrong here
Reducing buffer credits increases latency.
- ✗
Enable trunking on the ISL.
Why it's wrong here
Trunking allows multiple VSANs, but doesn't reduce latency.
- ✗
Disable flow control on the ISL.
Why it's wrong here
Flow control helps prevent drops, not reduce latency.
- ✓
Add an additional ISL and configure a port channel.
Why this is correct
Load balancing reduces latency.
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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.