- A
They commonly use HTTP methods such as GET, POST, PUT, and DELETE.
This is correct because REST APIs typically use familiar HTTP verbs to represent operations.
- B
They require Telnet to exchange structured data.
Why wrong: This is wrong because REST is normally associated with HTTP or HTTPS, not Telnet.
- C
They often exchange structured data in formats such as JSON.
This is correct because REST APIs frequently exchange information using structured data formats, especially JSON.
- D
They can be used only on physical routers and never on controllers.
Why wrong: This is wrong because APIs are not restricted to physical routers.
- E
They eliminate the need for authentication or authorization.
Why wrong: This is wrong because APIs usually require strong access control, not less.
Quick Answer
The correct answer is that REST APIs commonly use HTTP methods such as GET, POST, PUT, and DELETE. This is because REST, or Representational State Transfer, is an architectural style that treats network resources as addressable endpoints, and it leverages standard HTTP verbs to perform CRUD operations—Create, Read, Update, Delete—on those resources. On the CCNA 200-301 v2 exam, this concept tests your understanding of network automation basics, often appearing in questions that contrast RESTful APIs with older protocols like SNMP or CLI-based management. A common trap is assuming REST APIs require Telnet or SSH, but they are stateless and operate over HTTP/HTTPS, relying on structured data formats like JSON. To remember the core methods, think of the mnemonic “GPuD”—GET for reading, POST for creating, PUT for updating, and DELETE for removing—and always associate them with web-style requests, not legacy terminal connections.
CCNA AI and Network Operations Practice Question
This 200-301 practice question tests your understanding of ai and network operations. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. A key principle to apply: rEST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically.. 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 accurately describe REST-based APIs in a network automation context?
Answer choices
Why each option matters
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, POST, PUT, and DELETE.
REST APIs are a modern way for software tools to interact with networking systems. In plain language, they let one application ask another application for information or tell it to make a change using standard web-style requests. That is why methods such as GET, POST, PUT, and DELETE show up so often in automation examples. REST APIs also commonly exchange structured data, and JSON is one of the most common formats because it is compact and easy to process programmatically. They do not depend on Telnet, and they absolutely do not remove the need for security controls. In real deployments, authentication and authorization are often critical. REST APIs are also not limited to one device category. They can exist on routers, switches, wireless controllers, cloud platforms, and many other systems.
Key principle: REST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically.
Answer analysis
Option-by-option breakdown
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, POST, PUT, and DELETE.
- ✗
They require Telnet to exchange structured data.
Why it's wrong here
This is wrong because REST is normally associated with HTTP or HTTPS, not Telnet.
When this WOULD be correct
In a question focused on legacy systems or specific network configurations where Telnet is explicitly mentioned as a requirement for exchanging structured data, this option could be correct. For example, a question might ask about a scenario where a Telnet-based API is used for device management in a constrained environment.
- ✓
They often exchange structured data in formats such as JSON.
- ✗
They can be used only on physical routers and never on controllers.
Why it's wrong here
This is wrong because APIs are not restricted to physical routers.
When this WOULD be correct
In a question focused on the limitations of REST-based APIs in specific environments, such as a scenario that exclusively discusses physical hardware without mentioning virtual or cloud solutions, this option could be correct if it states that REST APIs are not applicable to those environments.
- ✗
They eliminate the need for authentication or authorization.
Why it's wrong here
This is wrong because APIs usually require strong access control, not less.
When this WOULD be correct
In a question focused on the theoretical aspects of API design, where the emphasis is on the simplicity of REST principles, an option stating that REST APIs eliminate the need for authentication could be correct if discussing a hypothetical scenario where security is not a concern.
Option-by-option analysis
Why each answer is right or wrong
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.
✓They commonly use HTTP methods such as GET, POST, PUT, and DELETE.Correct answer▾
Why this is correct
This is correct because REST APIs typically use familiar HTTP verbs to represent operations.
✗They require Telnet to exchange structured data.Wrong answer — click to see why▾
Why this is wrong here
REST APIs are based on HTTP/HTTPS, not Telnet. Telnet is an older, unencrypted protocol used for remote terminal access, not for structured data exchange. REST APIs use HTTP methods and typically exchange data in JSON or XML over TCP port 80 or 443.
★ When this WOULD be the correct answer
In a question focused on legacy systems or specific network configurations where Telnet is explicitly mentioned as a requirement for exchanging structured data, this option could be correct. For example, a question might ask about a scenario where a Telnet-based API is used for device management in a constrained environment.
Why candidates choose this
Students might confuse Telnet with a protocol used for network automation because Telnet is a common method for accessing network devices. However, Telnet is not used for REST APIs, which rely on HTTP.
✗They can be used only on physical routers and never on controllers.Wrong answer — click to see why▾
Why this is wrong here
REST APIs are not limited to physical routers; they can be implemented on virtual routers, switches, firewalls, and especially on controllers like Cisco APIC-EM or DNA Center. Controllers often expose REST APIs to manage multiple devices centrally.
★ When this WOULD be the correct answer
In a question focused on the limitations of REST-based APIs in specific environments, such as a scenario that exclusively discusses physical hardware without mentioning virtual or cloud solutions, this option could be correct if it states that REST APIs are not applicable to those environments.
Why candidates choose this
Students might think that APIs are only for physical devices because traditional network management focused on individual devices. However, modern network automation often uses controllers that provide APIs for centralized management.
✗They eliminate the need for authentication or authorization.Wrong answer — click to see why▾
Why this is wrong here
REST APIs typically require authentication and authorization to ensure secure access. For example, many network devices use HTTP Basic Authentication or token-based authentication (e.g., OAuth) to verify identity and permissions before allowing API calls.
★ When this WOULD be the correct answer
In a question focused on the theoretical aspects of API design, where the emphasis is on the simplicity of REST principles, an option stating that REST APIs eliminate the need for authentication could be correct if discussing a hypothetical scenario where security is not a concern.
Why candidates choose this
Students might assume that APIs are open and do not need security because they are used for automation. However, security is critical to prevent unauthorized changes or data breaches.
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
Common exam trap: answer the scenario, not the keyword
A common exam trap is assuming that REST-based APIs require Telnet or similar legacy protocols for communication. This misconception arises because Telnet was historically used for device management, but REST APIs exclusively use HTTP or HTTPS. Another trap is believing REST APIs remove the need for authentication or authorization; in fact, security controls are mandatory to protect network devices from unauthorized access. Misunderstanding the device scope is also frequent, as some think REST APIs only apply to physical routers, ignoring their availability on controllers and other network elements. Recognizing these pitfalls is essential to avoid incorrect answers.
Detailed technical explanation
How to think about this question
REST-based APIs in network automation provide a standardized way for software applications to communicate with network devices and controllers using web protocols. They leverage HTTP methods such as GET, POST, PUT, and DELETE to perform operations like retrieving device data, configuring settings, or deleting configurations. This approach aligns with modern software development practices and enables automation tools to interact programmatically with network infrastructure. The core principle of REST APIs is stateless communication and resource manipulation through URLs representing network objects. Data exchanged via REST APIs is typically structured in formats like JSON, which is lightweight, human-readable, and easy for automation scripts to parse and generate. Cisco devices and controllers support REST APIs to facilitate automation workflows, allowing network engineers to manage devices consistently regardless of physical or virtual deployment. A common exam trap involves confusing REST APIs with legacy protocols such as Telnet or assuming REST APIs eliminate security requirements. In reality, REST APIs operate over HTTP/HTTPS and require authentication and authorization to protect network resources. Understanding that REST APIs are versatile and secure interfaces used across various Cisco platforms helps avoid misinterpretations and supports effective automation design.
KKey Concepts to Remember
- REST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically.
- REST APIs exchange structured data primarily in JSON format, enabling efficient parsing and automation processing.
- REST APIs operate over HTTP or HTTPS protocols and do not rely on legacy protocols such as Telnet for communication.
- Authentication and authorization are essential for REST API access to ensure secure network management and prevent unauthorized changes.
- REST APIs are supported on a wide range of Cisco devices, including routers, switches, and wireless controllers, enabling consistent automation.
- REST APIs follow stateless communication principles, meaning each request contains all necessary information without relying on previous interactions.
- Network automation tools use REST APIs to retrieve device state information and push configuration changes in a standardized manner.
- Understanding REST API operations and data formats is critical for designing and troubleshooting automated network workflows in Cisco environments.
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.
Key takeaway
REST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically.
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.
What to study next
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Review rEST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically., then practise related 200-301 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this 200-301 question test?
AI and Network Operations — This question tests AI and Network Operations — REST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically..
What is the correct answer to this question?
The correct answer is: They commonly use HTTP methods such as GET, POST, PUT, and DELETE. — REST APIs are a modern way for software tools to interact with networking systems. In plain language, they let one application ask another application for information or tell it to make a change using standard web-style requests. That is why methods such as GET, POST, PUT, and DELETE show up so often in automation examples. REST APIs also commonly exchange structured data, and JSON is one of the most common formats because it is compact and easy to process programmatically. They do not depend on Telnet, and they absolutely do not remove the need for security controls. In real deployments, authentication and authorization are often critical. REST APIs are also not limited to one device category. They can exist on routers, switches, wireless controllers, cloud platforms, and many other systems.
What should I do if I get this 200-301 question wrong?
Review rEST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically., then practise related 200-301 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
REST-based APIs use HTTP methods like GET, POST, PUT, and DELETE to perform network device operations programmatically.
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Last reviewed: May 17, 2026
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