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Match each HTTP method to its common REST API action.

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Match each HTTP method to its common REST API action.

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Common exam trap

Common exam trap: answer the scenario, not the keyword

A common exam trap is confusing the HTTP methods with their REST API actions, especially mixing POST and PUT. Many candidates incorrectly assume POST updates resources or PUT creates new ones. This misunderstanding leads to wrong answers because POST is specifically designed to create new resources, while PUT replaces or updates existing ones. Another trap is thinking GET modifies data, but GET is strictly for data retrieval. Misinterpreting DELETE as a non-destructive action is also a frequent error; DELETE permanently removes resources. Understanding these distinctions is critical to avoid mistakes on REST API-related questions in the CCNA exam.

Technical deep dive

How to think about this question

HTTP methods define how clients interact with REST APIs, which are essential in modern network automation and Cisco programmability. GET is a safe and idempotent method used solely to retrieve data from a server without modifying any resources. POST is used to create new resources on the server, often resulting in a new URI or resource identifier. PUT replaces or updates an existing resource entirely, making it idempotent, meaning multiple identical requests have the same effect as one. DELETE removes a resource permanently from the server. The decision process for matching HTTP methods to REST API actions depends on the resource's lifecycle and the desired operation. GET is always for reading data, never changing it. POST is the method of choice when creating new entries or triggering operations that result in new resources. PUT requires the client to send the complete updated resource representation, replacing the old one. DELETE is straightforward, instructing the server to remove the specified resource. These rules are consistent across Cisco's network automation tools that use REST APIs, such as Cisco DNA Center and Cisco IOS XE programmability. A frequent exam trap involves confusing POST and PUT, as both can modify server state but serve different purposes. POST creates new resources and is not idempotent, while PUT updates existing resources and is idempotent. Misunderstanding this leads to incorrect answers. Practically, in Cisco automation, using the wrong method can cause unintended network changes or errors. Understanding these distinctions ensures precise API calls, which is critical for network reliability and automation success.

KKey Concepts to Remember

  • GET HTTP method retrieves data from a REST API without modifying the resource or server state.
  • POST HTTP method creates a new resource on the server and is not idempotent, meaning repeated calls create multiple resources.
  • PUT HTTP method replaces or updates an existing resource completely and is idempotent, so repeated calls have the same effect as one.
  • DELETE HTTP method removes a resource permanently from the server, effectively deleting it from the REST API.
  • REST API methods map directly to CRUD operations: GET for read, POST for create, PUT for update, and DELETE for delete.
  • Cisco network automation tools use these HTTP methods consistently to manage network device configurations and data.
  • Confusing POST and PUT methods is a common exam mistake because both modify resources but serve different lifecycle roles.
  • Understanding HTTP method idempotency helps predict the effect of repeated API calls in Cisco network programmability.

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.

Related practice questions

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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?

GET HTTP method retrieves data from a REST API without modifying the resource or server state.

What exam trap should I watch out for?

Common exam trap: answer the scenario, not the keyword: A common exam trap is confusing the HTTP methods with their REST API actions, especially mixing POST and PUT. Many candidates incorrectly assume POST updates resources or PUT creates new ones. This misunderstanding leads to wrong answers because POST is specifically designed to create new resources, while PUT replaces or updates existing ones. Another trap is thinking GET modifies data, but GET is strictly for data retrieval. Misinterpreting DELETE as a non-destructive action is also a frequent error; DELETE permanently removes resources. Understanding these distinctions is critical to avoid mistakes on REST API-related questions in the CCNA exam.

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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