LPIC-2 Network Client Management Practice Question
Exhibit
Refer to the exhibit. Output of `tcpdump -i eth0 port 67 or port 68`: ``` 13:10:05.123456 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:1a:2b:3c:4d:5e, length 300 13:10:05.123789 IP 192.168.1.1.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 300 ```
Refer to the exhibit. The output shows a DHCP exchange between a client (MAC 00:1a:2b:3c:4d:5e) and a server (192.168.1.1). The client is not obtaining an IP address. What is the most likely reason?
⚠ Common exam trap
Test-takers frequently assume DHCP failures are always server-side (e.g., authorization or reachability), overlooking client-side configuration files like dhclient.conf that can silently discard valid offers.
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 client's /etc/dhcp/dhclient.conf contains a 'reject' statement that rejects offers from this server.
The DHCP client can be configured with a 'reject' statement in /etc/dhcp/dhclient.conf to ignore offers from specific servers. In this scenario, the client sends a DHCPDISCOVER, receives a DHCPOFFER from 192.168.1.1, but then does not proceed to DHCPREQUEST, indicating the offer was rejected locally. This matches the behavior of a reject rule, which causes the client to discard the offer without further communication.
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 client's /etc/dhcp/dhclient.conf contains a 'reject' statement that rejects offers from this server.
Why this is correct
If the client rejects the server, it will ignore the offer and continue sending requests.
- ✗
The DHCP server did not receive the client's request.
Why it's wrong here
The server sent a reply, so it received the request.
- ✗
The DHCP server is not reachable from the client.
Why it's wrong here
The server replied, so it is reachable.
- ✗
The client's MAC address is not authorized on the DHCP server.
Why it's wrong here
If unauthorized, the server would not reply with an offer; but it did reply.
Visual reference
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-2 practice question is part of Courseiva's free LPI 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 LPIC-2 exam.