Quick Answer
The answer is that JSON is a common data format used in REST APIs, and this is correct because REST APIs rely on standard HTTP methods like GET, POST, PUT, and DELETE to perform CRUD operations on resources, with JSON serving as the lightweight, language-agnostic payload format for data exchange between the client and the network controller. This behavior is fundamental to the CCNA 200-301 v2 exam’s automation and programmability section, where you must understand how a developer interacts with a controller’s REST API to manage network devices. A common trap is confusing XML with JSON as the default—while both are supported, JSON is the prevalent choice due to its simplicity and efficiency in modern APIs. For the exam, remember that REST API common behavior always pairs HTTP verbs with structured data formats, and a quick memory tip is “GET, POST, PUT, DELETE—JSON is the payload you’ll meet.”
This 200-301 practice question tests your understanding of ai and network operations. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: rEST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers.. 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.
A developer is interacting with a REST API exposed by a network controller. Which two statements correctly describe common REST behavior?
GET is commonly used to retrieve resource data
GET requests are typically read operations.
POST always replaces an existing resource completely
Why wrong: POST usually creates or triggers processing; PUT is more associated with full replacement.
JSON is a common data format used in REST APIs
Many controllers exchange structured data as JSON.
REST requires SNMP as the transport mechanism
Why wrong: REST commonly uses HTTP or HTTPS, not SNMP.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
GET is commonly used to retrieve resource data
REST APIs commonly use HTTP methods such as GET, POST, PUT, and DELETE, and JSON is one of the most common payload formats.
Key principle: REST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
GET is commonly used to retrieve resource data
POST always replaces an existing resource completely
Why it's wrong here
POST usually creates or triggers processing; PUT is more associated with full replacement.
JSON is a common data format used in REST APIs
REST requires SNMP as the transport mechanism
Common exam traps
A common exam trap is assuming that POST always replaces an existing resource completely, which is incorrect. In REST API design, POST is typically used to create new resources or trigger server-side processing, whereas PUT is the method that fully replaces an existing resource. Confusing these two can lead to incorrect assumptions about how network controllers handle configuration changes or data updates. This misunderstanding may cause candidates to select POST as the answer for resource replacement questions, which is a frequent mistake in Cisco automation and programmability topics.
Detailed technical explanation
REST (Representational State Transfer) is an architectural style used for designing networked applications. It relies on stateless communication and standard HTTP methods like GET, POST, PUT, and DELETE to perform operations on resources identified by URIs. In Cisco automation and programmability, REST APIs enable network controllers to expose resources such as device configurations, telemetry data, or operational states in a standardized way. The GET method is primarily used to retrieve resource data without modifying the server state, making it ideal for read-only operations. JSON (JavaScript Object Notation) is a lightweight, human-readable data format widely used in REST APIs for exchanging structured information between clients and network controllers. Cisco network devices and controllers commonly support JSON payloads for configuration and monitoring tasks. A common exam trap involves confusing POST and PUT methods. POST typically creates a new resource or triggers processing, while PUT replaces an existing resource completely. Understanding this distinction is crucial for correctly interpreting REST API behavior in Cisco automation scenarios. Practically, network engineers use GET to fetch device states and JSON to parse responses efficiently when automating network management.
Key takeaway
REST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers.
Real-world example
A practitioner preparing for the 200-301 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. REST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Review rEST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers., then practise related 200-301 questions on the same topic to reinforce the concept.
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FAQ
AI and Network Operations — This question tests AI and Network Operations — REST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers..
The correct answer is: GET is commonly used to retrieve resource data — REST APIs commonly use HTTP methods such as GET, POST, PUT, and DELETE, and JSON is one of the most common payload formats.
Review rEST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers., then practise related 200-301 questions on the same topic to reinforce the concept.
REST APIs use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on network resources exposed by controllers.
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Same concept, more angles
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Variation 1. Which two statements correctly describe a RESTful API used by network controllers? Choose two.
mediumWhy A: REST commonly uses HTTP methods such as GET, POST, PUT, PATCH, and DELETE. It is also stateless, which means each request includes the information needed for the server to process it.
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Last reviewed: May 17, 2026
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