The answer is that RESTCONF provides a 'data' resource as the entry point for accessing YANG data stores, and it supports both XML and JSON encoding. This is correct because RESTCONF is designed as a RESTful protocol that uses standard HTTP methods—GET, POST, PUT, PATCH, DELETE—to manipulate YANG-defined data on network devices, with the 'data' resource acting as the top-level container for all configuration and state data. On the ENCOR 350-401 exam, this concept tests your understanding of how RESTCONF differs from NETCONF, particularly its reliance on HTTPS for transport rather than SSH, and the fact that it does not define its own data models but leverages existing YANG models. A common trap is confusing RESTCONF’s encoding options—it supports both XML and JSON, not just JSON—or assuming it uses TLS natively, when in fact it depends on HTTP over TLS. Memory tip: think of RESTCONF as “REST over YANG”—the ‘data’ resource is your front door, and HTTP methods are your keys.
350-401 REST APIs and Data Models Practice Question
This 350-401 practice question tests your understanding of rest apis and data models. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which two statements about RESTCONF are true? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
RESTCONF uses HTTP methods like GET, PUT, POST, and DELETE to manipulate YANG data.
RESTCONF uses HTTP methods to access YANG-defined data on network devices. It supports both XML and JSON encoding. It does not use SSH or TLS natively for transport; it relies on HTTP over TLS (HTTPS) for security. The 'data' resource is the top-level resource for accessing YANG data stores. RESTCONF does not define its own data model; it uses YANG models.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
RESTCONF uses HTTP methods like GET, PUT, POST, and DELETE to manipulate YANG data.
Why this is correct
Correct because RESTCONF maps HTTP methods to CRUD operations on YANG data.
Related concept
Static NAT maps one inside address to one outside address.
✗
RESTCONF supports only XML encoding for data.
Why it's wrong here
Incorrect because RESTCONF supports both XML and JSON encoding.
✗
RESTCONF uses SSH as the transport protocol.
Why it's wrong here
Incorrect because RESTCONF uses HTTP/HTTPS, not SSH; NETCONF uses SSH.
✓
RESTCONF provides a 'data' resource as the entry point for accessing YANG data stores.
Why this is correct
Correct because the base URI for RESTCONF includes the 'data' resource to access configuration and state data.
Related concept
Static NAT maps one inside address to one outside address.
✗
RESTCONF defines its own data modeling language.
Why it's wrong here
Incorrect because RESTCONF uses YANG as the data modeling language.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 350-401 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
REST APIs and Data Models — This question tests REST APIs and Data Models — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: RESTCONF uses HTTP methods like GET, PUT, POST, and DELETE to manipulate YANG data. — RESTCONF uses HTTP methods to access YANG-defined data on network devices. It supports both XML and JSON encoding. It does not use SSH or TLS natively for transport; it relies on HTTP over TLS (HTTPS) for security. The 'data' resource is the top-level resource for accessing YANG data stores. RESTCONF does not define its own data model; it uses YANG models.
What should I do if I get this 350-401 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which two statements about RESTCONF are true? (Choose two.)
medium
A.RESTCONF uses SSH for transport security.
✓ B.RESTCONF uses HTTP methods such as GET, PUT, POST, DELETE, and PATCH.
C.RESTCONF is designed to replace NETCONF entirely.
✓ D.RESTCONF supports both JSON and XML encoding for data representation.
E.RESTCONF uses remote procedure calls (RPCs) for all operations.
Why B: The correct answers are B and D. B is correct because RESTCONF uses HTTP methods like GET, PUT, POST, DELETE, and PATCH. D is correct because RESTCONF supports both JSON and XML encoding. A is incorrect because RESTCONF uses HTTP, not SSH. C is incorrect because RESTCONF is not a replacement for NETCONF; they are different protocols. E is incorrect because RESTCONF does not use remote procedure calls (RPCs) in the same way as NETCONF; it uses RESTful operations.
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Question Discussion
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