200-901 Practice Test 5 — 25 Questions

Question 1

An administrator wants to receive real-time notifications when a new message is posted to a Webex room. Which Webex API resource should be used to configure this?

Accepted Answer

Webhooks API. Webhooks allow you to register for events like message.created. The webhook resource is used for this purpose.

Answer

People API

Answer

Messages API

Answer

Rooms API

Question 2

A developer wants to retrieve a list of network devices from Cisco DNA Center. Which HTTP method and URL structure should be used?

Accepted Answer

GET /dna/intent/api/v1/network-device. To retrieve a list of network devices from Cisco DNA Center's Intent API, the correct HTTP method is GET, which is idempotent and used for read operations. The URL path /dna/intent/api/v1/network-device is the documented endpoint for listing network devices. GET requests do not modify server state, making them appropriate for retrieval.

Answer

POST /dna/intent/api/v1/network-device

Answer

DELETE /dna/intent/api/v1/network-device

Answer

PUT /dna/intent/api/v1/network-device

Question 3

A network engineer wants to use NETCONF to change the hostname of a Cisco device. Which operation should be used?

Accepted Answer

. The operation is used to modify configuration data in NETCONF.

Answer

<lock>

Answer

<copy-config>

Answer

<get-config>

Question 4

When using the requests library in Python to send a POST request, which parameter should be used to send a JSON payload in the request body?

Accepted Answer

json=payload. The json= parameter automatically serializes the Python dictionary to JSON and sets the Content-Type header to application/json.

Answer

params=payload

Answer

files=payload

Answer

data=json.dumps(payload)

Question 5

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?

Accepted Answer

Implement exponential backoff and honor the Retry-After header.. Implementing exponential backoff with retry-after headers is the recommended approach for rate-limited APIs. Ignoring or simply retrying immediately may worsen the situation.

Answer

Ignore the error and retry immediately.

Answer

Use a different API key to bypass the limit.

Answer

Increase the number of concurrent requests to exhaust the rate limit quickly.

Question 6

A Cisco Webex bot needs to receive real-time notifications when new messages are posted in a space. Which API feature should the bot use?

Accepted Answer

Webhooks via the /webhooks API. Webex Webhooks allow real-time event notifications; the bot registers a webhook with a target URL that receives POST requests when events occur.

Answer

Server-Sent Events (SSE)

Answer

Polling the /messages endpoint every second

Answer

Long polling with a keep-alive connection

Question 7

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

Accepted Answer

application/yang-data+json. RESTCONF uses application/yang-data+json for JSON and application/yang-data+xml for XML. application/json is not specific to YANG data.

Answer

application/json

Answer

text/json

Answer

application/xml

Question 8

Which tool is designed for infrastructure as code, uses a declarative language, and can automate configuration management across multiple devices?

Accepted Answer

Ansible. Ansible is the correct answer because it is an infrastructure-as-code tool that uses a declarative YAML-based language (playbooks) to define desired system states. It automates configuration management across multiple devices agentlessly, using SSH or WinRM to push configurations, making it ideal for multi-device environments.

Answer

Git

Answer

Python

Answer

Postman

Question 9

In Postman, you want to run a collection of API requests automatically and test responses. Which feature should you use?

Accepted Answer

Collection Runner. The Collection Runner runs all requests in a collection sequentially and allows tests to be evaluated.

Answer

Postman Workspaces

Answer

Postman Monitors

Answer

Postman Interceptor

Question 10

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?

Accepted Answer

Cursor-based pagination. Cursor-based pagination uses a token (e.g., nextToken) to point to the next set of results, unlike offset/limit which uses page numbers.

Answer

Page-based pagination

Answer

Offset/Limit pagination

Answer

Link header pagination

Question 11

An application needs to authenticate to Cisco DNA Center. Which authentication method is used?

Accepted Answer

Basic Auth over HTTPS to obtain a token. DNA Center uses Basic Auth to obtain a token via POST /dna/system/api/v1/auth/token.

Answer

API key in X-Cisco-DNA-Center-API-Key header

Answer

OAuth2 with client credentials grant

Answer

Bearer token in Authorization header with no prior step

Question 12

A developer is building a Cisco Webex bot that needs to automatically respond to messages. Which THREE resources/endpoints are essential for this functionality? (Choose three.)

Accepted Answer

Rooms API. Essential endpoints are Messages (to send/receive), Webhooks (to get notified of events), and Rooms (to interact with rooms). People is useful but not essential for bot functionality.

Answer

People API

Answer

Licenses API

Question 13

A developer wants to retrieve a list of all network devices from Cisco DNA Center. Which API endpoint should they use?

Accepted Answer

GET /dna/intent/api/v1/network-device. The correct endpoint is GET /dna/intent/api/v1/network-device as per Cisco DNA Center API documentation.

Answer

GET /dna/intent/api/v1/topology/l2/{vlanID}

Answer

POST /dna/system/api/v1/auth/token

Answer

GET /dna/intent/api/v1/issues

Question 14

When using the Meraki Dashboard API, what HTTP header is used to pass the API key?

Accepted Answer

X-Cisco-Meraki-API-Key: <key>. Meraki requires the API key in the X-Cisco-Meraki-API-Key header.

Answer

API-Key: <key>

Answer

Authorization: Bearer <key>

Answer

Meraki-API-Key: <key>

Question 15

A developer needs to retrieve a list of all network devices from Cisco DNA Center. Which API endpoint and HTTP method should be used?

Accepted Answer

GET /dna/intent/api/v1/network-device. The correct API to get the device list is GET /dna/intent/api/v1/network-device. Authentication is handled separately via POST /dna/system/api/v1/auth/token.

Answer

POST /dna/intent/api/v1/issues

Answer

POST /dna/system/api/v1/auth/token

Answer

GET /dna/intent/api/v1/topology/l2/{vlanID}

Question 16

A developer wants to retrieve the current user's Webex profile information. Which API endpoint should be called?

Accepted Answer

GET /v1/people/me. The /v1/people/me endpoint returns details about the authenticated user.

Answer

GET /v1/people

Answer

GET /v1/memberships/me

Answer

GET /v1/rooms/me

Question 17

A Meraki API request is receiving HTTP 429 responses. According to the Meraki rate limit, what should the developer do?

Accepted Answer

Reduce the number of concurrent requests and wait for the Retry-After header value.. Meraki returns 429 with a Retry-After header indicating the number of seconds to wait.

Answer

Switch to the DNA Center API.

Answer

Use a different API key.

Answer

Immediately retry the request without delay.

Question 18

A developer wants to send a message to a specific room in Webex using the API. The developer already has the room ID. Which API call is correct?

Accepted Answer

POST /v1/messages with body { 'roomId': 'Y2lzY29zcGFyazovL3VzL1JPT00v...', 'text': 'Hello' }. To send a message to a room, POST /v1/messages is used with roomId and text in the body.

Answer

PUT /v1/messages with body { 'roomId': '...', 'text': 'Hello' }

Answer

POST /v1/rooms with body { 'title': 'New Room' }

Answer

GET /v1/messages with query parameter roomId='...'

Question 19

A developer is using the Meraki Dashboard API to retrieve a list of devices in an organization. The API response is paginated. Which HTTP header does Meraki use to indicate the next page of results?

Accepted Answer

Link. Meraki uses the Link header with rel="next" for pagination, or alternatively the startingAfter/endingBefore parameters.

Answer

X-Cisco-Meraki-API-Key

Answer

Retry-After

Answer

X-Next-Page

Question 20

Which tool is used to explore and validate YANG models?

Accepted Answer

pyang. pyang is a Python-based tool for validating and converting YANG models.

Answer

Postman

Answer

cURL

Answer

YANGman