This LFCS practice question tests your understanding of networking. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Exhibit
Refer to the exhibit.
$ ip route show
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.10 metric 100
10.0.0.0/8 via 192.168.1.1 dev eth0 proto static metric 100
default via 192.168.1.1 dev eth0 proto static metric 100
Given the routing table output in the exhibit, what will happen when the system tries to send a packet to 10.1.1.1?
Refer to the exhibit.
$ ip route show
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.10 metric 100
10.0.0.0/8 via 192.168.1.1 dev eth0 proto static metric 100
default via 192.168.1.1 dev eth0 proto static metric 100
A
The packet is sent via eth1.
Why wrong: No route via eth1 is present.
B
The packet is sent to 192.168.1.1 via eth0.
The 10.0.0.0/8 route matches and points to that gateway.
C
The packet is sent via default route.
Why wrong: The specific route is preferred over default.
D
The packet is dropped because there is no subnet matching 10.1.1.1.
Why wrong: There is a route: 10.0.0.0/8 covers 10.1.1.1.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The packet is sent to 192.168.1.1 via eth0.
The routing table shows a specific route for the 10.0.0.0/8 network via gateway 192.168.1.1 on eth0. Since 10.1.1.1 falls within this subnet, the packet is forwarded to 192.168.1.1 via eth0, not through the default route or any other interface.
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.
✗
The packet is sent via eth1.
Why it's wrong here
No route via eth1 is present.
✓
The packet is sent to 192.168.1.1 via eth0.
Why this is correct
The 10.0.0.0/8 route matches and points to that gateway.
Related concept
Read the scenario before looking for a memorised answer.
✗
The packet is sent via default route.
Why it's wrong here
The specific route is preferred over default.
✗
The packet is dropped because there is no subnet matching 10.1.1.1.
Why it's wrong here
There is a route: 10.0.0.0/8 covers 10.1.1.1.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume a destination like 10.1.1.1 has no matching route and default to the default gateway, overlooking the presence of a classful /8 route that explicitly covers it.
Detailed technical explanation
How to think about this question
The Linux kernel performs longest prefix match (LPM) routing: it compares the destination IP against all routes and selects the one with the longest subnet mask. A /8 route (255.0.0.0) matches any 10.x.x.x address, so 10.1.1.1 is forwarded via the gateway 192.168.1.1. The default route (0.0.0.0/0) is only used if no other route matches, which is not the case here.
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 network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Networking — This question tests Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The packet is sent to 192.168.1.1 via eth0. — The routing table shows a specific route for the 10.0.0.0/8 network via gateway 192.168.1.1 on eth0. Since 10.1.1.1 falls within this subnet, the packet is forwarded to 192.168.1.1 via eth0, not through the default route or any other interface.
What should I do if I get this LFCS 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This LFCS practice question is part of Courseiva's free Linux Foundation 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 LFCS exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.