LPIC-1 Essential System Services and Networking Practice Question
Exhibit
Refer to the exhibit. # ip route show default via 10.0.1.1 dev eth0 10.0.1.0/24 dev eth0 proto kernel scope link src 10.0.1.10 192.168.1.0/24 via 10.0.1.254 dev eth0
A host on the 192.168.1.0/24 network cannot reach the internet. Based on the exhibit, which is the most likely cause?
⚠ Common exam trap
Watch out — candidates often assume any default gateway will work for internet access, but they overlook the subnet mismatch between the host's network (192.168.1.0/24) and the gateway's IP (10.0.1.254), which prevents proper routing to the external gateway (10.0.1.1).
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 gateway for internet traffic is incorrect; the host uses 10.0.1.254 for internal network, but the default gateway 10.0.1.1 may not be reachable from 192.168.1.0/24.
The host on 192.168.1.0/24 uses 10.0.1.254 as its default gateway, but the internet-bound traffic must be routed through 10.0.1.1, which is on a different subnet. Without a route or NAT between these subnets, the host cannot reach the internet, as the gateway 10.0.1.254 is likely an internal router that does not forward to 10.0.1.1.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
There is no route to 192.168.1.0/24.
Why it's wrong here
There is a route via 10.0.1.254.
- ✗
The default route is missing.
Why it's wrong here
Default route exists.
- ✓
The gateway for internet traffic is incorrect; the host uses 10.0.1.254 for internal network, but the default gateway 10.0.1.1 may not be reachable from 192.168.1.0/24.
Why this is correct
Causes internet unreachability.
- ✗
The routing table is empty.
Why it's wrong here
Routing table is populated.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-1 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-1 exam.