This LPIC-2 practice question tests your understanding of advanced networking configuration. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
A Linux router running multiple routing tables is misconfigured. The administrator wants to add a policy routing rule that sends all traffic from subnet 10.10.0.0/16 to routing table 200. Which command should be used?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
route add -net 10.10.0.0/16 table 200
Why wrong: 'route' command does not support multiple tables.
ip rule add from 10.10.0.0/16 table 200
Creates a routing policy rule based on source address.
iptables -A FORWARD -s 10.10.0.0/16 -j table 200
Why wrong: iptables cannot add routing table entries.
ip route add 10.10.0.0/16 dev eth0 table 200
Why wrong: Adds a route to table 200, not a rule to select that table.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
ip rule add from 10.10.0.0/16 table 200
Option B is correct because the `ip rule` command is used to add policy routing rules in Linux, which direct packets to specific routing tables based on criteria like source address. The `from` parameter specifies the source subnet (10.10.0.0/16), and `table 200` directs matching traffic to routing table 200, enabling policy-based routing beyond the default table.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
route add -net 10.10.0.0/16 table 200
Why it's wrong here
'route' command does not support multiple tables.
ip rule add from 10.10.0.0/16 table 200
Why this is correct
Creates a routing policy rule based on source address.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
iptables -A FORWARD -s 10.10.0.0/16 -j table 200
Why it's wrong here
iptables cannot add routing table entries.
ip route add 10.10.0.0/16 dev eth0 table 200
Why it's wrong here
Adds a route to table 200, not a rule to select that table.
Common exam traps
The trap here is that candidates confuse adding a route to a table (ip route add ... table 200) with creating a policy rule that directs traffic to that table (ip rule add ... table 200), leading them to pick option D instead of B.
Trap categories for this question
Command / output trap
'route' command does not support multiple tables.
Detailed technical explanation
Policy routing in Linux uses the Routing Policy Database (RPDB), managed by `ip rule`, which contains a prioritized list of rules that match packet attributes (e.g., source IP, fwmark) and then look up the corresponding routing table (e.g., table 200). The `ip rule` command adds entries to this database, while `ip route` populates the actual routing tables; without a rule, traffic will never consult table 200. In real-world scenarios, this is critical for multi-homed routers or VPN gateways where traffic from different subnets must egress through different interfaces or providers.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Advanced Networking Configuration — This question tests Advanced Networking Configuration — Read the scenario before looking for a memorised answer..
The correct answer is: ip rule add from 10.10.0.0/16 table 200 — Option B is correct because the `ip rule` command is used to add policy routing rules in Linux, which direct packets to specific routing tables based on criteria like source address. The `from` parameter specifies the source subnet (10.10.0.0/16), and `table 200` directs matching traffic to routing table 200, enabling policy-based routing beyond the default table.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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.
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