This XK0-005 practice question tests your understanding of troubleshooting. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A Linux server is experiencing intermittent connectivity issues. The administrator reviews the system logs and finds the following messages: 'NETDEV WATCHDOG: eth0: transmit queue 0 timed out'. Which THREE actions are likely to resolve this issue? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Disable NIC offloading features using 'ethtool -K eth0 tx off sg off'.
Option A is correct because the 'NETDEV WATCHDOG: eth0: transmit queue 0 timed out' error often indicates that the NIC's hardware offloading features (such as TCP segmentation offload, scatter-gather) are causing the driver to hang or fail to complete transmissions. Disabling these offloads with 'ethtool -K eth0 tx off sg off' forces the CPU to handle packet segmentation and reduces the load on the NIC, which can resolve the timeout.
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.
✓
Disable NIC offloading features using 'ethtool -K eth0 tx off sg off'.
Why this is correct
Offloading can cause driver bugs; disabling it may stabilize the interface.
Related concept
Read the scenario before looking for a memorised answer.
✓
Update the network interface card (NIC) driver to the latest version.
Why this is correct
Driver updates often include fixes for bugs that cause transmit timeouts.
Related concept
Read the scenario before looking for a memorised answer.
✗
Increase the transmit queue length using 'ifconfig eth0 txqueuelen 10000'.
Why it's wrong here
Increasing queue length may delay the timeout but does not address the root cause.
✗
Change the MTU on the interface to 9000.
Why it's wrong here
MTU settings affect packet size, not transmit queue timeouts.
✓
Replace the NIC with a known good one.
Why this is correct
Hardware faults can cause timeouts; replacing the NIC resolves hardware issues.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse transmit queue timeout with a simple buffer exhaustion issue and incorrectly choose to increase the transmit queue length (option C), when the real cause is a driver or hardware fault that requires disabling offloads, updating the driver, or replacing the NIC.
Detailed technical explanation
How to think about this question
The NETDEV watchdog timer is a kernel mechanism that monitors the NIC driver's ability to complete transmissions; if the driver fails to update the watchdog within a set period (usually 5 seconds), the kernel logs the timeout and may reset the interface. Disabling offloading features like TCP segmentation offload (TSO) and scatter-gather (SG) reduces the complexity of packet processing on the NIC, which is a common workaround for buggy drivers or hardware that cannot handle certain offload operations reliably.
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.
TExam Day Tips
→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 XK0-005 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this XK0-005 question in full detail.
Troubleshooting — This question tests Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Disable NIC offloading features using 'ethtool -K eth0 tx off sg off'. — Option A is correct because the 'NETDEV WATCHDOG: eth0: transmit queue 0 timed out' error often indicates that the NIC's hardware offloading features (such as TCP segmentation offload, scatter-gather) are causing the driver to hang or fail to complete transmissions. Disabling these offloads with 'ethtool -K eth0 tx off sg off' forces the CPU to handle packet segmentation and reduces the load on the NIC, which can resolve the timeout.
What should I do if I get this XK0-005 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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