Quick Answer
The correct answer is that RESTful APIs often exchange structured data such as JSON. This is because REST, or Representational State Transfer, is an architectural style that relies on standard HTTP verbs like GET, POST, PUT, and DELETE to perform operations on resources, and it typically formats the data being transferred in lightweight, human-readable structures like JSON or XML. On the CCNA 200-301 v2 exam, this concept tests your understanding of how network automation and programmability interfaces communicate, often appearing in questions about REST API characteristics versus other protocols like NETCONF or gRPC. A common trap is confusing REST with SOAP, which uses XML exclusively and is more rigid, whereas REST’s flexibility with JSON is a key differentiator. For a quick memory tip, remember that REST rhymes with “best” for JSON—most modern APIs use JSON as their default data format.
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: rESTful APIs commonly use HTTP methods such as GET, POST, PUT, DELETE to perform CRUD operations on network devices and services.. 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 RESTful APIs are correct? (Choose two.)
They commonly use HTTP methods such as GET and POST.
Correct. Those verbs are central to REST interactions.
They require Layer 2 adjacency between client and server.
Why wrong: REST can work across routed networks like normal web traffic.
They often exchange structured data such as JSON.
Correct. JSON is a common payload format.
They replace the need for routing protocols on the network.
Why wrong: APIs do not replace routing fundamentals.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
They commonly use HTTP methods such as GET and POST.
REST commonly uses HTTP verbs and typically exchanges structured data such as JSON.
Key principle: RESTful APIs commonly use HTTP methods such as GET, POST, PUT, DELETE to perform CRUD operations on network devices and services.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
They commonly use HTTP methods such as GET and POST.
They require Layer 2 adjacency between client and server.
Why it's wrong here
REST can work across routed networks like normal web traffic.
When this WOULD be correct
If the question were about a specific protocol that operates at Layer 2, such as Ethernet, and asked about the requirements for communication between devices on the same local network, then this option could be correct.
They often exchange structured data such as JSON.
They replace the need for routing protocols on the network.
Why it's wrong here
APIs do not replace routing fundamentals.
When this WOULD be correct
In a question that asks about network architecture where RESTful APIs are integrated into a system that uses a flat network design, one might argue that they reduce the complexity of routing by allowing direct communication between services, thus making routing protocols less relevant in that specific context.
Option-by-option analysis
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
Why this is correct
Correct. Those verbs are central to REST interactions.
Why this is wrong here
RESTful APIs operate at the application layer (Layer 7) and use HTTP, which runs over TCP/IP. They do not require Layer 2 adjacency; clients and servers can be on different subnets or even across the internet, as long as IP connectivity exists.
★ When this WOULD be the correct answer
If the question were about a specific protocol that operates at Layer 2, such as Ethernet, and asked about the requirements for communication between devices on the same local network, then this option could be correct.
Why candidates choose this
Students might confuse the client-server model with direct physical connections, or think that APIs require a direct link like some legacy protocols. However, REST is designed to work over routed networks.
Why this is wrong here
RESTful APIs are application-layer interfaces that do not replace network-layer functions like routing. Routing protocols (e.g., OSPF, BGP) are still required to ensure IP packets reach the correct destination; APIs simply provide a way to interact with services over that network.
★ When this WOULD be the correct answer
In a question that asks about network architecture where RESTful APIs are integrated into a system that uses a flat network design, one might argue that they reduce the complexity of routing by allowing direct communication between services, thus making routing protocols less relevant in that specific context.
Why candidates choose this
Some may think that because APIs enable communication between applications, they eliminate the need for underlying network protocols. However, APIs rely on the network stack and do not replace routing.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
A frequent exam trap is the misconception that RESTful APIs require Layer 2 adjacency between client and server devices. Some candidates mistakenly believe that because RESTful APIs use HTTP, they must operate only within the same broadcast domain or VLAN. However, RESTful APIs function over routed IP networks just like any other web traffic, so Layer 2 adjacency is not necessary. Another trap is thinking that RESTful APIs replace routing protocols, which is incorrect since APIs only provide programmable access to device functions and do not handle routing or forwarding.
Detailed technical explanation
RESTful APIs (Representational State Transfer) are a set of architectural principles used to design networked applications. They rely on stateless communication and use standard HTTP methods such as GET, POST, PUT, and DELETE to interact with resources, which are identified by URLs. In the context of Cisco networking and the CCNA exam, RESTful APIs allow network engineers to automate device configuration and monitoring by sending HTTP requests to network devices that support these APIs. The decision process for using RESTful APIs involves understanding that they operate over TCP/IP networks without requiring Layer 2 adjacency, meaning clients and servers can communicate across routed networks. RESTful APIs typically exchange data in structured formats like JSON, which is easy to read and parse by automation tools and scripts. This makes RESTful APIs a fundamental component in network programmability, enabling integration with orchestration platforms and automation frameworks. A common exam trap is assuming that RESTful APIs require Layer 2 adjacency or replace traditional network functions like routing protocols. In reality, RESTful APIs are application-layer interfaces that do not influence underlying network protocols. They provide a programmable interface to network devices but do not handle packet forwarding or routing decisions. Understanding this distinction helps avoid confusion and correctly answer questions related to network automation and programmability on the CCNA exam.
Key takeaway
RESTful APIs commonly use HTTP methods such as GET, POST, PUT, DELETE to perform CRUD operations on network devices and services.
Real-world example
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
What to study next
Review rESTful APIs commonly use HTTP methods such as GET, POST, PUT, DELETE to perform CRUD operations on network devices and services., 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 — RESTful APIs commonly use HTTP methods such as GET, POST, PUT, DELETE to perform CRUD operations on network devices and services..
The correct answer is: They commonly use HTTP methods such as GET and POST. — REST commonly uses HTTP verbs and typically exchanges structured data such as JSON.
Review rESTful APIs commonly use HTTP methods such as GET, POST, PUT, DELETE to perform CRUD operations on network devices and services., then practise related 200-301 questions on the same topic to reinforce the concept.
RESTful APIs commonly use HTTP methods such as GET, POST, PUT, DELETE to perform CRUD operations on network devices and services.
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Last reviewed: Apr 12, 2026
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