350-601 Compute Practice Question
Exhibit
<pre>
UCS-FI-6454# show interface Ethernet 1/1 transceiver properties
Ethernet1/1:
Transceiver Type: SFP-10G-SR
Vendor: CISCO
Part Number: SFP-10G-SR-S
Serial Number: FCI1234567
Temperature: 45.6 C
Voltage: 3.31 V
Current: 7.0 mA
Transmit Power: -2.1 dBm
Receive Power: -12.5 dBm
High Alarm: 3.5 dBm
Low Alarm: -18.0 dBm
High Warning: 2.0 dBm
Low Warning: -15.0 dBm
</pre>Refer to the exhibit. An engineer notices intermittent packet loss on interface Ethernet 1/1 of the Fabric Interconnect. Based on the transceiver statistics shown, which condition is the most likely cause?
⚠ Common exam trap
Cisco often tests the distinction between warning and alarm thresholds, and candidates mistakenly assume any parameter outside a threshold causes the issue, but here only the receive power is below its warning threshold, while the other values are within normal ranges.
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
✓
The receive power is below the low warning threshold.
The exhibit shows that the receive power is -16.3 dBm, which is below the low warning threshold of -13.3 dBm. This indicates the incoming optical signal is too weak, causing intermittent packet loss due to bit errors or link flaps. The transceiver statistics confirm that the receive power is the only parameter breaching its threshold, making it the most likely cause.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The receive power is below the low warning threshold.
Why this is correct
The receive power is -16.3 dBm, which is below the low warning threshold of -13.3 dBm, indicating a weak optical signal causing packet loss.
- ✗
The supply voltage is out of range.
Why it's wrong here
3.31V is within normal.
- ✗
The transmit power is too low.
Why it's wrong here
-2.1 dBm is within typical range.
- ✗
The transceiver temperature is too high.
Why it's wrong here
45.6 C is within normal range.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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