How should I use these Understanding and Using APIs practice questions?

Read each scenario carefully and choose your answer before revealing the explanation. Then check why your choice was right or wrong. Repeat until the reasoning feels automatic.

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200-901 · topic practice

Understanding and Using APIs practice questions

Practise Cisco DevNet Associate 200-901 Understanding and Using APIs practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Reviewed byJohnson Ajibi· MSc IT Security

20 questionsDomain: Understanding and Using APIs

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What the exam tests

What to know about Understanding and Using APIs

Understanding and Using APIs questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Watch out for

Common Understanding and Using APIs exam traps

▸Answering from memory before reading the full scenario.
▸Missing a constraint such as cost, availability, security, scope or command context.
▸Choosing a broad answer when the question asks for the most specific fix.
▸Ignoring why the wrong options are tempting.

Practice set

Understanding and Using APIs questions

20 questions · select your answer, then reveal the explanation

Question 1easymultiple choice

Read the full Understanding and Using APIs explanation →

What HTTP method should be used to update only the description field of a network device resource via a REST API?

Trap 1: DELETE

DELETE removes the resource entirely.

Trap 2: PUT

PUT replaces the entire resource, not just a single field.

Trap 3: POST

POST is used to create a new resource, not update existing ones.

Study all Understanding and Using APIs common traps →

A
DELETE
Why wrong: DELETE removes the resource entirely.
B
PUT
Why wrong: PUT replaces the entire resource, not just a single field.
C
POST
Why wrong: POST is used to create a new resource, not update existing ones.
D
PATCH
PATCH is designed for partial updates to a resource.

Understanding and Using APIs practice questions

What to know about Understanding and Using APIs

Common Understanding and Using APIs exam traps

Understanding and Using APIs questions

What HTTP method should be used to update only the description field of a network device resource via a REST API?

A developer is building a script to retrieve a list of network devices from Cisco DNA Center. The API response includes a 'nextToken' field in the body to indicate more results. What pagination method is being used?

Which HTTP header is used to specify the format of the request body (e.g., application/json) when sending a POST request to a REST API?

A developer is using the Meraki Dashboard API and receives a 429 Too Many Requests error. The API documentation states a rate limit of 5 calls per second. What is the best practice to handle this?

Which OAuth 2.0 grant type is most appropriate for a server-to-server integration where no user interaction is required, such as a backend service calling Cisco API?

A developer wants to use Postman to test a REST API that requires a Bearer token. Where should the token be placed in the request?

What is the correct URL path for retrieving the configuration of a network interface using RESTCONF on a Cisco device?

A network engineer wants to stream telemetry data from a Cisco router using gRPC. Which gRPC service model is typically used for the router to push data to a collector?

Which NETCONF operation is used to retrieve the entire configuration datastore from a network device?

What is the purpose of the 'Authorization' header in a REST API request?

A developer is using the Webex API to create a webhook that triggers when a new message is posted in a room. What information is typically included in the webhook payload sent by Webex to the callback URL?

In Cisco DNA Center's intent API, which endpoint would you use to retrieve the list of all network devices?

A developer needs to use Postman to test an API that uses Basic authentication. How should the credentials be configured in Postman?

Which authentication flow is most appropriate for a native mobile app that needs to access the Webex API on behalf of a user?

What is the correct Content-Type header value for a RESTCONF request using JSON encoding?

Which TWO of the following are valid OAuth 2.0 grant types? (Select TWO)

Which THREE of the following are characteristics of NETCONF? (Select THREE)

Which TWO of the following are commonly used when implementing pagination in REST APIs? (Select TWO)

Which TWO of the following are HTTP methods used for creating or updating resources in REST APIs? (Select TWO)

An application needs to retrieve a list of network devices from Cisco DNA Center. Which HTTP method should be used against the /dna/intent/api/v1/network-device endpoint?

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