Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
Which statement best describes why JSON and YANG are related but not the same thing in automation workflows?
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
YANG defines structured models, while JSON is a format used to carry structured data.
This is correct because the two concepts are related but play different roles.
B
Distractor review
JSON defines routing policy and YANG provides encryption.
This is wrong because neither statement reflects the actual role of those technologies.
C
Distractor review
YANG can be used only on switches, while JSON can be used only on routers.
This is wrong because both concepts apply broadly across systems.
D
Distractor review
They are simply two names for the same API method.
This is wrong because they are not API methods at all.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is assuming that JSON and YANG serve the same function because both appear in automation workflows. Candidates may mistakenly think JSON defines network models or that YANG is a data format. This confusion leads to incorrect answers about their roles. JSON is simply a data representation format, while YANG defines the structure and constraints of that data. Misunderstanding this difference can cause candidates to select options that incorrectly assign functions like encryption or device-specific usage to these technologies, which is not accurate in Cisco automation contexts.
Technical deep dive
How to think about this question
YANG is a data modeling language used in network automation to define the structure, constraints, and semantics of configuration and state data for network devices. It provides a standardized way to describe how network information is organized, enabling consistent management across diverse devices and vendors. YANG models specify what data is available and how it relates, but do not dictate how the data is encoded or transported. JSON, on the other hand, is a lightweight, text-based data interchange format used to represent structured data. In network automation workflows, JSON often serves as the encoding format for data that conforms to YANG models. When network management protocols like NETCONF or RESTCONF exchange configuration or operational data, JSON can be the payload format carrying the structured information defined by YANG models. A common exam trap is confusing YANG and JSON as interchangeable or equivalent technologies. YANG defines the schema and rules for network data, while JSON is merely one of several formats (others include XML) that can represent that data. Understanding this distinction is critical for CCNA candidates to correctly interpret automation workflows and avoid misapplying concepts related to data modeling versus data formatting in Cisco network programmability contexts.
KKey Concepts to Remember
- YANG defines the structure and constraints of network configuration and state data in a standardized model-driven approach.
- JSON serves as a data encoding format that carries structured information conforming to YANG models in automation workflows.
- Network automation protocols like NETCONF and RESTCONF use YANG models to define data and JSON or XML to encode that data for transport.
- YANG models specify what data is available and how it relates but do not define how data is formatted or transmitted.
- JSON is a flexible, human-readable format that represents data but does not define the data’s schema or validation rules.
- Confusing YANG and JSON roles can lead to misinterpretation of automation workflows and incorrect exam answers.
- YANG enables vendor-neutral network programmability by standardizing data models, while JSON enables interoperability through common data formats.
- Understanding the distinction between data modeling (YANG) and data representation (JSON) is essential for Cisco automation and programmability concepts.
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?
YANG defines the structure and constraints of network configuration and state data in a standardized model-driven approach.
What is the correct answer to this question?
The correct answer is: YANG defines structured models, while JSON is a format used to carry structured data. — They are related because both appear in model-driven automation, but they solve different problems. In practical terms, YANG is used to describe how network information should be structured, while JSON is a data format that can carry structured information in requests and responses. One defines the model, and the other can represent the data. This is a useful conceptual distinction because candidates often blur data modeling and payload formatting together.
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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