Users report that they can access internal servers by IP address but not by hostname. The administrator tests DNS resolution from a workstation using `dig example.com` and receives a response with status NOERROR but the ANSWER section is empty. What is the most likely cause?

The domain exists but has no A record for the queried hostname.

The workstation's /etc/resolv.conf points to an unreachable DNS server.

The DNS server is configured as a caching-only resolver and has no records for the domain.

The DNS server is down and the workstation is using a cached negative response.

A workstation can ping its own IP address but cannot ping the default gateway. The administrator checks the ARP table with `ip neigh show` and sees that the gateway's entry is marked as FAILED. What does this indicate?

The gateway is not responding to ARP requests, so the workstation cannot resolve the gateway's MAC address.

The workstation's network cable is unplugged.

The gateway's IP address is incorrect in the routing table.

The gateway is blocking ICMP echo requests.

LPI LPIC-2:Linux Engineer (201-450)

Domain 6Objective 3

205.3 Troubleshooting Network Issues (weight: 4) LPIC-2 Practice Questions (Page 1)

Part of the Topic 205: Networking Configuration domain, which makes up ~10% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 43 practice questions to prepare you well beyond it. (estimate)

43questions here

9free pages

15concepts

15 Concepts in This Objective

Identify network troubleshooting methodology
Use basic network diagnostic tools
Inspect network interfaces and configuration
Analyze routing tables and connectivity
Examine ARP and neighbor tables
Check DNS resolution
Inspect network sockets and connections
Capture and analyze network traffic
Test firewall and packet filtering
Measure bandwidth and throughput
Monitor network statistics and errors
Troubleshoot wireless network issues
Interpret system logs for network events
Resolve common network configuration errors
Use advanced troubleshooting tools

Questions 1–5

1foundation · easy
Which command is used to view kernel messages, including network driver and hardware events, that may indicate network problems?
Select an answer first
2foundation · easy
Which command is specifically designed to combine the functionality of ping and traceroute, providing a continuous display of packet loss and latency along a network path?
Select an answer first
3foundation · easy
Which command is used to query the systemd journal for network-related log messages?
Select an answer first
4application · medium
Users report that they can access internal servers by IP address but not by hostname. The administrator tests DNS resolution from a workstation using `dig example.com` and receives a response with status NOERROR but the ANSWER section is empty. What is the most likely cause?
Select an answer first
5application · medium
A workstation can ping its own IP address but cannot ping the default gateway. The administrator checks the ARP table with `ip neigh show` and sees that the gateway's entry is marked as FAILED. What does this indicate?
Select an answer first

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205.3 Troubleshooting Network Issues (weight: 4) LPIC-2 Practice Questions (Page 1)

Questions 1–5

Which command is used to view kernel messages, including network driver and hardware events, that may indicate network problems?

Which command is specifically designed to combine the functionality of ping and traceroute, providing a continuous display of packet loss and latency along a network path?

Which command is used to query the systemd journal for network-related log messages?

Users report that they can access internal servers by IP address but not by hostname. The administrator tests DNS resolution from a workstation using `dig example.com` and receives a response with status NOERROR but the ANSWER section is empty. What is the most likely cause?

A workstation can ping its own IP address but cannot ping the default gateway. The administrator checks the ARP table with `ip neigh show` and sees that the gateway's entry is marked as FAILED. What does this indicate?

Keep studying — Topic 205: Networking Configuration