This 350-601 practice question tests your understanding of storage network. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
MDS-A# show running-config interface fc1/1
!Command: show running-config interface fc1/1
!Time: Mon Apr 15 10:30:00
interface fc1/1
switchport mode F
switchport speed 16000
no shutdown
MDS-A# show interface fc1/1
fc1/1 is up
Hardware is Fibre Channel, SFP is short wave laser
Port WWN is 20:01:54:7f:ee:00:01:00
Admin port mode is F, operational port mode is F
fc1/1 is part of VSAN 100
5 minutes input rate 1.20 Gbps, 0.80 Gbps output rate
3045 frames input, 3045 frames output
CRC errors: 12, CRC error threshold: 15
Credits: 16, Credits used: 4
Link failures: 0, Sync losses: 0
Refer to the exhibit. The interface shows CRC errors. What is the most likely cause of these errors?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Refer to the exhibit.
MDS-A# show running-config interface fc1/1
!Command: show running-config interface fc1/1
!Time: Mon Apr 15 10:30:00
interface fc1/1
switchport mode F
switchport speed 16000
no shutdown
MDS-A# show interface fc1/1
fc1/1 is up
Hardware is Fibre Channel, SFP is short wave laser
Port WWN is 20:01:54:7f:ee:00:01:00
Admin port mode is F, operational port mode is F
fc1/1 is part of VSAN 100
5 minutes input rate 1.20 Gbps, 0.80 Gbps output rate
3045 frames input, 3045 frames output
CRC errors: 12, CRC error threshold: 15
Credits: 16, Credits used: 4
Link failures: 0, Sync losses: 0
A
Insufficient buffer credits for the distance.
Why wrong: Buffer credit issues cause credit starvation, not CRC errors.
B
The port is configured as F port but should be E port.
Why wrong: CRC errors are not a symptom of port mode misconfiguration.
C
Speed mismatch between the ports.
Why wrong: Speed mismatch would cause link failures, not CRC errors.
D
Faulty SFP or fiber cable.
CRC errors are typically caused by signal degradation from hardware.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Faulty SFP or fiber cable.
CRC errors often indicate physical layer issues such as optics or cable problems. Option B is correct. Option A is wrong because credit starvation would show credit timeouts. Option C is wrong because speed mismatch would cause link failures. Option D is wrong because the port is operational mode F.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Insufficient buffer credits for the distance.
Why it's wrong here
Buffer credit issues cause credit starvation, not CRC errors.
✗
The port is configured as F port but should be E port.
Why it's wrong here
CRC errors are not a symptom of port mode misconfiguration.
✗
Speed mismatch between the ports.
Why it's wrong here
Speed mismatch would cause link failures, not CRC errors.
✓
Faulty SFP or fiber cable.
Why this is correct
CRC errors are typically caused by signal degradation from hardware.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-601 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 350-601 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Storage Network — This question tests Storage Network — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Faulty SFP or fiber cable. — CRC errors often indicate physical layer issues such as optics or cable problems. Option B is correct. Option A is wrong because credit starvation would show credit timeouts. Option C is wrong because speed mismatch would cause link failures. Option D is wrong because the port is operational mode F.
What should I do if I get this 350-601 question wrong?
Identify which 350-601 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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