Question 1hardmulti select
Full question →hardmulti selectObjective-mapped
Which two statements accurately describe REST-based APIs in a network automation context?
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
Best answer
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
Distractor review
They require Telnet to exchange structured data.
This is wrong because REST is normally associated with HTTP or HTTPS, not Telnet.
C
Best answer
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
Distractor review
They can be used only on physical routers and never on controllers.
This is wrong because APIs are not restricted to physical routers.
E
Distractor review
They eliminate the need for authentication or authorization.
This is wrong because APIs usually require strong access control, not less.
Common exam trap
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.
Technical deep dive
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.
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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?
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?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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