Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
Which statement best describes the role of a router’s routing table?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
It helps the router choose where to forward packets toward destination networks
This is correct because the routing table is used to determine the best forwarding path.
B
Distractor review
It stores secure user passwords for AAA login
This is wrong because routing tables do not store AAA credentials.
C
Distractor review
It maps every MAC address on the LAN to a switch port
This is wrong because that is the role of a switch MAC address table, not a router routing table.
D
Distractor review
It defines STP root bridge election values
This is wrong because STP elections are unrelated to the routing table.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking the router’s routing table for a switch’s MAC address table or confusing it with device management features like AAA password storage or STP root bridge election. Candidates may incorrectly assume that the routing table stores MAC addresses or user credentials, which it does not. The routing table strictly contains network routes used to forward packets toward destination IP networks. Misunderstanding this fundamental role can lead to selecting answers about MAC address mappings or security credentials, which are unrelated to routing tables and routing decisions.
Technical deep dive
How to think about this question
A router’s routing table is a fundamental data structure that stores routes to various destination networks. It contains entries that specify network prefixes, associated next-hop IP addresses, and exit interfaces. This table enables the router to make forwarding decisions by matching the destination IP address of incoming packets against the best available route. The routing table is dynamically updated through routing protocols such as OSPF, EIGRP, or static routes configured by an administrator, ensuring the router has current path information. When a packet arrives at a router, the device performs a longest prefix match lookup in the routing table to find the most specific route to the destination network. The router then forwards the packet out the interface associated with that route’s next hop. This decision process is critical for IP connectivity across networks and distinguishes routers from switches, which forward frames based on MAC addresses rather than IP routes. The routing table does not store user credentials, MAC address mappings, or spanning-tree information, which are handled by other network components. A common exam trap is confusing the router’s routing table with a switch’s MAC address table or management functions like AAA or STP. While switches use MAC address tables to forward frames within a LAN, routers rely on routing tables to forward packets between different networks. Understanding this distinction helps avoid selecting incorrect answers related to unrelated functions such as password storage or STP root bridge election, which do not involve routing tables.
KKey Concepts to Remember
- A router’s routing table stores network prefixes and next-hop information used to forward packets toward destination IP networks.
- Routing tables are dynamically updated by routing protocols such as OSPF and EIGRP or by static route configurations.
- The router uses longest prefix match in the routing table to select the best path for forwarding incoming packets.
- Routing tables do not store MAC address mappings; MAC address tables are maintained by switches for LAN forwarding.
- Routing tables do not contain user credentials or AAA login information, which are managed separately.
- Spanning Tree Protocol (STP) root bridge election values are unrelated to routing tables and pertain to switch topology control.
- Routers use routing tables to make forwarding decisions between different networks, distinguishing their role from switches.
- Confusing routing tables with MAC address tables or management functions is a common exam mistake to avoid.
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
A router’s routing table stores network prefixes and next-hop information used to forward packets toward destination IP networks.
What is the correct answer to this question?
The correct answer is: It helps the router choose where to forward packets toward destination networks — A routing table contains the information a router uses to decide where to forward packets toward their destinations. In plain language, it is the router’s map of known networks and next-hop choices. When a packet arrives, the router checks the destination address against the routing table and uses the best matching entry to determine how to move the packet onward. A routing table is not the same thing as a switch MAC table, and it is not primarily a record of passwords or logs. It is a forwarding decision structure. That is why the correct answer is the one focused on selecting paths to remote networks rather than on switching-only behavior or unrelated management tasks.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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