Question 1mediummatching
Full question →Match each automation or API concept to its most accurate description.
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mediummatchingObjective-mapped
Match each automation or API concept to its most accurate description.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is confusing northbound and southbound APIs by reversing their roles. Candidates often mistake southbound APIs as interfaces for applications to communicate with controllers, but they actually enable controllers to manage network devices. Another common mistake is treating JSON as a communication protocol rather than a data format, or ignoring HTTPS’s role as the secure transport layer. Misunderstanding these concepts can lead to incorrect answers about how automation components interact in Cisco networks.
Technical deep dive
How to think about this question
Network automation relies heavily on APIs to enable programmability and centralized control. The core concept involves a controller acting as an intermediary between applications and network devices. Northbound APIs provide an interface for applications to communicate with the controller, requesting network state information or pushing configuration changes. These APIs abstract the complexity of the underlying network, allowing developers to automate tasks without dealing directly with device-specific commands. Southbound APIs operate in the opposite direction, enabling the controller to communicate with managed devices such as routers and switches. These APIs translate the controller's high-level instructions into device-specific protocols like NETCONF or RESTCONF. This separation of roles allows for modular and scalable automation architectures, where the controller manages device interactions while applications focus on business logic and orchestration. A common exam trap is confusing northbound and southbound APIs or mixing their roles. Northbound APIs are used by applications to talk to controllers, while southbound APIs are used by controllers to manage devices. Additionally, JSON is often mistaken as a protocol rather than a data format, and HTTPS is sometimes overlooked as the secure transport layer. Understanding these distinctions is crucial for correctly implementing and troubleshooting Cisco automation solutions in the CCNA context.
KKey Concepts to Remember
- A northbound API enables applications to communicate with a network controller to request data or send commands, facilitating network automation and programmability.
- A southbound API allows a network controller to communicate downward to managed devices and infrastructure, enabling configuration and monitoring of network elements.
- JSON is a lightweight, text-based data format used to structure data exchanged between network devices and controllers in automation workflows.
- HTTPS provides a secure transport layer for API communications, ensuring confidentiality and integrity of data exchanged between clients and network controllers.
- In Cisco automation, northbound APIs abstract network device details, allowing applications to interact with the controller rather than individual devices.
- Southbound APIs translate high-level controller commands into device-specific instructions, supporting protocols like NETCONF, RESTCONF, or SNMP.
- Understanding the distinction between northbound and southbound APIs is critical for designing scalable and manageable network automation solutions.
- Using JSON over HTTPS is a common practice in Cisco network programmability to ensure secure, standardized data exchange in automation tasks.
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 northbound API enables applications to communicate with a network controller to request data or send commands, facilitating network automation and programmability.
What exam trap should I watch out for?
Common exam trap: answer the scenario, not the keyword: A frequent exam trap is confusing northbound and southbound APIs by reversing their roles. Candidates often mistake southbound APIs as interfaces for applications to communicate with controllers, but they actually enable controllers to manage network devices. Another common mistake is treating JSON as a communication protocol rather than a data format, or ignoring HTTPS’s role as the secure transport layer. Misunderstanding these concepts can lead to incorrect answers about how automation components interact in Cisco networks.
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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