Question 1mediummulti select
Full question →mediummulti selectObjective-mapped
Which two statements accurately describe controller-based networking at the CCNA level?
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
A controller can centralize management and policy logic.
This is correct because centralization is a core feature of controller-based networking.
B
Best answer
Northbound APIs can allow external applications to communicate with the controller.
This is correct because controller designs commonly expose APIs for software interaction.
C
Distractor review
Controllers eliminate all need for switches and routers.
This is wrong because forwarding devices still exist and still matter.
D
Distractor review
Controllers are unrelated to automation.
This is wrong because controllers are highly relevant to automation workflows.
E
Distractor review
Controllers require Telnet for all communication.
This is wrong because controller communication is not defined by universal Telnet use.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is selecting answers that imply controllers replace all network devices or that they are unrelated to automation. Some candidates mistakenly believe that controller-based networking removes the need for switches and routers, which is incorrect because these devices still perform actual packet forwarding. Others overlook the role of controllers in automation, ignoring that controllers expose northbound APIs specifically to enable external applications and automation tools to interact with the network. Misunderstanding these points can lead to choosing incorrect options that overstate or understate the controller’s role.
Technical deep dive
How to think about this question
Controller-based networking centralizes the control plane functions by using a dedicated controller device or software platform to manage network policies, configurations, and automation. This approach contrasts with traditional distributed networking, where each switch or router independently manages its own control plane. In Cisco’s CCNA context, controller-based networking enables administrators to apply consistent policies across multiple devices from a single point, simplifying network management and improving scalability. The decision process in controller-based networking involves the controller acting as the central authority that programs forwarding devices such as switches and routers. The controller communicates with these devices using southbound protocols (like NETCONF or OpenFlow) to enforce policies and configurations. Additionally, northbound APIs exposed by the controller allow external applications and automation tools to interact programmatically, enabling integration with orchestration platforms and custom software. This API-driven model is fundamental for network automation and programmability, key topics in the CCNA Automation and Programmability domain. A common exam trap is to assume that controllers replace all physical forwarding devices or that they eliminate the need for routers and switches. In reality, controllers do not forward traffic themselves; they manage and program the forwarding behavior of existing devices. Another misconception is that controllers are unrelated to automation, whereas they are central to enabling automated workflows through APIs. Understanding these distinctions is critical for correctly answering controller-based networking questions on the CCNA exam and for practical network design.
KKey Concepts to Remember
- A controller centralizes network management by consolidating policy logic and configuration tasks into a single platform.
- Northbound APIs exposed by controllers enable external applications and automation tools to communicate programmatically with the network.
- Controllers use southbound protocols to push configurations and policies to forwarding devices like switches and routers.
- Forwarding devices such as switches and routers remain essential for actual packet forwarding despite controller-based management.
- Controller-based networking supports automation by allowing software-driven network configuration and monitoring.
- Centralized control simplifies consistent policy enforcement across multiple devices in a network.
- Controllers do not replace physical network devices but enhance their management and programmability.
- Understanding the distinction between control plane centralization and data plane forwarding is critical for CCNA-level networking.
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.
Related practice questions
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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 controller centralizes network management by consolidating policy logic and configuration tasks into a single platform.
What is the correct answer to this question?
The correct answer is: A controller can centralize management and policy logic. — Controller-based networking centralizes certain management and policy functions and often exposes APIs for external software integration. In plain language, rather than configuring every device in complete isolation, administrators can use a central platform that coordinates policy and lets automation tools interact programmatically. This does not eliminate the need for the devices themselves, but it changes how control and management are expressed. The wrong answers usually go too far by claiming controllers replace all forwarding devices or make security irrelevant. The two correct answers are the ones that preserve centralization and API-driven integration as the core ideas.
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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