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Which pairing is correct?

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Which pairing is correct?

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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

Distractor review

JSON — data modeling language used to define network schemas such as YANG modules

This describes YANG, not JSON.

B

Distractor review

YANG — lightweight interchange format built from curly braces and arrays

This describes JSON syntax characteristics, not YANG.

C

Best answer

RESTCONF — protocol that can use YANG-defined data models over HTTP-based access

Correct. RESTCONF commonly exposes YANG-modeled data over HTTP methods.

D

Distractor review

NETCONF — spanning-tree enhancement for rapid convergence

NETCONF is a network configuration protocol, not a spanning-tree enhancement.

Common exam trap

Common exam trap: answer the scenario, not the keyword

A frequent exam trap is confusing JSON with YANG or NETCONF with spanning-tree enhancements. JSON is a data format, not a modeling language, so pairing it with YANG modules is incorrect. Similarly, NETCONF is often mistakenly thought to be related to spanning-tree protocols, but it is actually a network configuration protocol. Candidates might also confuse YANG’s role with JSON’s syntax or RESTCONF’s protocol function. This confusion arises because these technologies often work together but serve distinct purposes. Understanding each technology’s specific role prevents selecting incorrect answers based on superficial similarities.

Technical deep dive

How to think about this question

RESTCONF is a network management protocol designed to provide a programmatic interface for accessing YANG-defined data models using HTTP methods such as GET, POST, PUT, and DELETE. It enables network automation and programmability by exposing device configuration and operational data in a standardized, RESTful manner. RESTCONF leverages the hierarchical structure of YANG models to represent network elements and their states, making it easier for network engineers to interact with devices through web-based APIs. In the CCNA context, RESTCONF is recognized as a protocol that complements YANG by providing HTTP-based access to the data models defined in YANG. This contrasts with NETCONF, which uses XML over SSH for device communication. Understanding that RESTCONF uses YANG models over HTTP is crucial for distinguishing it from other protocols and data formats like JSON or NETCONF. JSON itself is a lightweight data interchange format often used within RESTCONF payloads but is not a modeling language. A common exam trap is confusing JSON and YANG or misattributing NETCONF’s purpose. JSON is often mistaken as a data modeling language, but it only formats data. YANG defines the schema and structure of network data, while NETCONF is a protocol for configuration management, not related to spanning-tree or rapid convergence features. Recognizing these distinctions helps avoid selecting incorrect options and clarifies the role of RESTCONF in modern network automation.

KKey Concepts to Remember

  • RESTCONF uses HTTP methods to access and manipulate network device data modeled by YANG, enabling standardized network programmability.
  • YANG defines the hierarchical schema and structure of network configuration and state data used by protocols like RESTCONF and NETCONF.
  • JSON is a lightweight data interchange format often used within RESTCONF payloads but does not define network data models.
  • NETCONF is a network configuration protocol that uses XML over SSH and is distinct from RESTCONF’s HTTP-based approach.
  • NETCONF does not relate to spanning-tree protocol enhancements or rapid convergence features in Cisco networks.
  • RESTCONF exposes YANG-modeled data over HTTP, facilitating automation and programmability in modern Cisco network environments.
  • Confusing JSON as a data modeling language or NETCONF as a spanning-tree protocol leads to common exam mistakes.
  • Understanding the distinct roles of YANG, JSON, RESTCONF, and NETCONF is essential for correctly answering CCNA automation questions.

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?

RESTCONF uses HTTP methods to access and manipulate network device data modeled by YANG, enabling standardized network programmability.

What is the correct answer to this question?

The correct answer is: RESTCONF — protocol that can use YANG-defined data models over HTTP-based access — RESTCONF is an HTTP-based API approach that commonly uses YANG-defined data models. JSON is a data-interchange format, YANG is the data modeling language, and NETCONF is a network management protocol rather than an STP feature.

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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