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LPIC-2 · topic practice

Advanced Networking Configuration practice questions

Practise Linux Professional Institute Certification Level 2 LPIC-2 Advanced Networking Configuration practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Reviewed byJohnson Ajibi· MSc IT Security
20 questionsDomain: Advanced Networking Configuration
Practice 10 questionsBrowse domain →

What the exam tests

What to know about Advanced Networking Configuration

Advanced Networking Configuration questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Watch out for

Common Advanced Networking Configuration exam traps

  • ▸Answering from memory before reading the full scenario.
  • ▸Missing a constraint such as cost, availability, security, scope or command context.
  • ▸Choosing a broad answer when the question asks for the most specific fix.
  • ▸Ignoring why the wrong options are tempting.

Practice set

Advanced Networking Configuration questions

20 questions · select your answer, then reveal the explanation

Question 1easymultiple choice
Read the full Advanced Networking Configuration explanation →

An administrator wants to configure a virtual IP address on interface eth0 with IP 192.168.1.100/24. Which command correctly adds the virtual IP as an alias?

Question 2mediummultiple choice
Read the full Advanced Networking Configuration explanation →

A system administrator notices that the default gateway is missing after a reboot. The network configuration uses ifup/ifdown scripts. Which file should be modified to ensure the default gateway is persistent?

Question 3hardmultiple choice
Read the full NAT/PAT explanation →

A server with IP 10.0.0.1 needs to forward packets from network 192.168.1.0/24 to 10.0.0.0/24. The administrator runs: 'iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -d 10.0.0.0/24 -j MASQUERADE'. However, traffic from 192.168.1.0/24 cannot reach 10.0.0.0/24. What is the most likely missing configuration?

Question 4mediummultiple choice
Read the full wireless explanation →

An administrator needs to configure a wireless interface wlan0 with WPA2-PSK authentication and a static IP address 192.168.2.50/24. Which tool should be used to configure the wireless settings?

Question 5hardmultiple choice
Read the full Advanced Networking Configuration explanation →

After adding a new network interface, the system assigns it the name 'enp0s3' instead of 'eth0'. Which of the following best describes the reason for this change?

Question 6easymultiple choice
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An administrator wants to check the ARP cache for a specific IP address 192.168.1.1. Which command will display the ARP entry for that address?

Question 7mediummultiple choice
Read the full Advanced Networking Configuration explanation →

A company has a server with two network interfaces: eth0 (public IP) and eth1 (private IP). The administrator wants to allow SSH from the public network only. Which iptables rule set achieves this?

Question 8mediummulti select
Review the full routing breakdown →

Which TWO commands can be used to display the routing table on a Linux system?

Question 9hardmulti select
Review the full routing breakdown →

Which THREE conditions must be met for a Linux system to act as a router between two networks?

Question 10easymulti select
Read the full Advanced Networking Configuration explanation →

Which TWO statements about the /etc/hosts file are true?

Question 11hardmultiple choice
Read the full Advanced Networking Configuration explanation →

Refer to the exhibit. A packet is sent from 192.168.1.100 to 10.0.0.5. Which interface will the packet exit?

Exhibit

Refer to the exhibit.

# ip route show
default via 192.168.1.1 dev eth0
10.0.0.0/8 via 192.168.2.1 dev eth1
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.100
192.168.2.0/24 dev eth1 proto kernel scope link src 192.168.2.100
Question 12mediummultiple choice
Read the full Advanced Networking Configuration explanation →

Refer to the exhibit. If a user on the local machine tries to SSH to a remote host on eth1, what will happen?

Network Topology
0 0 ACCEPT alllo * 0.0.0.0/0100 5000 ACCEPT tcp50 3000 DROP tcpRefer to the exhibit.# iptables -L -n -v
Question 13hardmultiple choice
Read the full NAT/PAT explanation →

You are a network administrator for a medium-sized company. The company has a Linux server acting as a router/firewall with three network interfaces: eth0 (public, 203.0.113.2/24, gateway 203.0.113.1), eth1 (DMZ, 10.0.1.1/24), and eth2 (internal, 192.168.1.1/24). The DMZ hosts a web server with IP 10.0.1.100, and the internal network has client machines. The firewall rules are currently set to default DROP on INPUT and FORWARD, ACCEPT on OUTPUT. The administrator wants to allow internal clients (192.168.1.0/24) to access the web server (10.0.1.100) on port 80. Additionally, the administrator wants to allow external users (from the internet) to access the web server's public IP (203.0.113.2) on port 80, which should be DNATed to 10.0.1.100. The administrator has enabled IP forwarding and added the following rules:

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to-destination 10.0.1.100:80 iptables -A FORWARD -i eth0 -o eth1 -p tcp --dport 80 -j ACCEPT iptables -A FORWARD -i eth1 -o eth0 -p tcp --sport 80 -j ACCEPT

Internal clients cannot access the web server. External users are able to access the web server successfully. What is the most likely reason internal clients cannot access the web server?

Question 14mediummultiple choice
Review the full routing breakdown →

A network administrator notices that a Linux router with two network interfaces is not forwarding packets between them, despite having IP forwarding enabled in the kernel. The administrator has verified that the firewall rules are not blocking the traffic. What is the most likely cause of the issue?

Question 15hardmulti select
Read the full DNS explanation →

Which TWO of the following are valid methods to configure a Linux system to use a specific DNS server for name resolution?

Question 16hardmultiple choice
Review the full routing breakdown →

A client on the internet sends a TCP SYN packet to 10.0.1.10:8080. The router receives it on eth0. According to the exhibit, what will happen to the packet?

Network Topology
MASQUERADE all10.0.2.0/24DNAT tcpRefer to the exhibit.# ip route showdefault via 10.0.1.1 dev eth0# iptables -L -t natChain PREROUTING (policy ACCEPT)target prot opt source destinationChain POSTROUTING (policy ACCEPT)
Question 17easymultiple choice
Review the full routing breakdown →

An administrator needs to prioritize traffic for a VoIP application over other traffic on a Linux router. Which tool should be used to implement traffic shaping and prioritization?

Question 18mediummultiple choice
Read the full NAT/PAT explanation →

A company has a Linux server with two network interfaces: eth0 connected to the internal 192.168.1.0/24 network, and eth1 connected to the internet via a public IP of 203.0.113.10. The server runs a web server on port 80 and needs to allow internal clients to access the internet while hiding their private IPs (MASQUERADE). Additionally, external users should be able to reach the web server using the public IP. The administrator has enabled IP forwarding and configured iptables with the following rules:

iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT iptables -A FORWARD -i eth1 -o eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT

However, internal clients can access the internet, but external users cannot reach the web server. What should the administrator do to fix the issue?

Question 19mediummultiple choice
Review the full subnetting walkthrough →

A company has multiple subnets and wants to implement policy-based routing to direct traffic from a specific development subnet (192.168.10.0/24) through a specialized firewall for content filtering, while all other traffic uses the default gateway. Which of the following steps is required to achieve this using iproute2 tools?

Question 20hardmulti select
Review the full subnetting walkthrough →

Which TWO network diagnostic steps should be performed to isolate a problem where a Linux server (IP 10.0.0.10/24) cannot reach a remote server (IP 192.168.1.50/24) while other hosts on the same subnet can reach it? Assume routing is properly configured.

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Frequently asked questions

What does the LPIC-2 exam test about Advanced Networking Configuration?
Advanced Networking Configuration questions test whether you can apply the concept in context, not just recognise a definition.
How should I use these practice questions?
Select your answer before revealing the explanation. Then read why each option is right or wrong — this active recall approach builds retention far faster than re-reading notes.
Can I practise just Advanced Networking Configuration questions in a focused session?
Yes — the session launcher on this page draws every question from the Advanced Networking Configuration domain. Use a 10-question session first to gauge your baseline, then move to 20 or 30 once the weak spots are clear.
Where can I practise other LPIC-2 topics?
Use the topic links above to move to related areas, or go back to the LPIC-2 question bank to see all topics.
Are these real exam questions or dumps?
These are original practice questions written to test the same concepts the LPIC-2 exam covers. They are not copied from any real exam or dump site.