200-901 Cisco Platforms and Development Practice Test 4 — 15 Questions

Question 1

A developer is building an application that interacts with the Webex API to create rooms and send messages. The application needs to receive real-time notifications when a new message is posted in any room. Which TWO actions should the developer take? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Provide a target URL where the webhook sends the notification. To receive real-time notifications, a webhook must be registered for the 'message.created' event. The webhook will POST to a specified URL when a message is created.

Answer

Poll the GET /v1/messages endpoint every second

Answer

Use the 'roomId' parameter to filter messages

Answer

Send a POST request to /v1/webhooks with 'resource: messages' and 'event: seen'

Question 2

A network engineer is using Cisco DNA Center to automate network changes. Which THREE operations are part of the 'Change your network' API category? (Choose three.)

Accepted Answer

Create and assign a site to a device. The 'Change your network' API category in Cisco DNA Center includes operations that actively modify the network state. Creating and assigning a site to a device is a configuration change that associates a physical location with a device, which directly alters the network's logical topology and is part of the site management workflow under this API category.

Answer

Run a command on a device via Command Runner

Answer

Retrieve the list of network devices

Question 3

A developer is working with the Meraki Dashboard API to manage SSIDs. Which TWO statements about pagination are correct? (Choose two.)

Accepted Answer

The 'endingBefore' parameter is used to go to the previous page. Meraki uses the Link header with 'prev' and 'next' URLs for pagination. Additionally, the startingAfter and endingBefore query parameters allow manual pagination.

Answer

Pagination is handled automatically by the client library; no action required

Answer

The 'page' query parameter is used to specify page number

Answer

The Link header contains a 'last' URL for the final page

Question 4

A network engineer wants to retrieve a list of all network devices from Cisco DNA Center using REST API. Which URL and HTTP method should be used?

Accepted Answer

GET /dna/intent/api/v1/network-device. Cisco DNA Center provides the GET /dna/intent/api/v1/network-device endpoint to list all network devices.

Answer

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

Answer

GET /dna/system/api/v1/auth/token

Answer

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

Question 5

An administrator is configuring a Cisco Meraki Dashboard API integration. After receiving a 429 HTTP response, what header should be examined to determine when the request can be retried?

Accepted Answer

Retry-After. Meraki's rate limit returns a 429 status with a Retry-After header indicating the number of seconds to wait before retrying.

Answer

X-RateLimit-Reset

Answer

X-Cisco-Meraki-API-Key

Answer

Location

Question 6

A developer wants to create a new room in Cisco Webex using the API. Which HTTP request is appropriate?

Accepted Answer

POST /v1/rooms. To create a new room, you must send a POST request to /v1/rooms with the room details in the body.

Answer

GET /v1/rooms

Answer

PUT /v1/rooms

Answer

DELETE /v1/rooms

Question 7

In Cisco IOS XE, a network engineer wants to retrieve the hostname of a device using RESTCONF. Which URI and method should be used? Assume RESTCONF is enabled and the base URL is https://device/restconf.

Accepted Answer

GET /restconf/data/Cisco-IOS-XE-native:native/hostname. The hostname is part of the native YANG model. The correct path is /restconf/data/Cisco-IOS-XE-native:native/hostname with GET.

Answer

GET /restconf/data/hostname

Answer

GET /restconf/data/Cisco-IOS-XE-interfaces:interfaces

Answer

POST /restconf/data/Cisco-IOS-XE-native:native/hostname

Question 8

An application uses Cisco DNA Center APIs and needs to receive notifications when a new device is added. Which DNA Center API category should be used to set up event-driven notifications?

Accepted Answer

Platform. The Platform API category includes event notifications and task management features.

Answer

Change your network

Answer

Know your network

Answer

Run your network

Question 9

What authentication method is required to obtain a token from Cisco DNA Center's API?

Accepted Answer

Basic Authentication (username:password base64 encoded) in Authorization header. Cisco DNA Center uses Basic Authentication over HTTPS to obtain a token via POST /dna/system/api/v1/auth/token.

Answer

Bearer token in Authorization header

Answer

API key in header X-API-Key

Answer

OAuth 2.0 client credentials grant

Question 10

A Meraki dashboard API request to list networks returns a paginated response. The engineer notices a Link header in the response. What does this header typically contain?

Accepted Answer

A URL to the next page of results. Meraki uses Link headers for pagination, providing URLs for the next and previous pages.

Answer

The rate limit remaining

Answer

The total number of resources

Answer

An error message

Question 11

An engineer is developing an EEM applet on a Cisco IOS XE device to run a CLI command when a specific syslog message appears. Which event trigger should be used?

Accepted Answer

event syslog pattern. The syslog pattern event trigger allows matching a specific syslog message pattern.

Answer

event interface

Answer

event timer

Answer

event cli match

Question 12

A developer wants to use the Cisco Webex API to send a message to a specific person by email. Which parameter should be used in the POST /v1/messages request?

Accepted Answer

toPersonEmail. To send a message to a person, use the toPersonEmail parameter instead of roomId.

Answer

personId

Answer

recipientEmail

Answer

roomId

Question 13

Which YANG model is commonly used as an open standard for interface configuration and is supported by many vendors?

Accepted Answer

openconfig-interfaces. OpenConfig models are vendor-neutral standard models. oc-interfaces is the OpenConfig interface model.

Answer

ietf-interfaces

Answer

cisco-routing

Answer

Cisco-IOS-XE-native

Question 14

An application needs to retrieve all network clients from a specific Meraki network. The API response may be paginated. Which query parameters can be used to implement cursor-based pagination with the Meraki Dashboard API?

Accepted Answer

startingAfter and endingBefore. Meraki supports cursor-based pagination using startingAfter and endingBefore parameters.

Answer

offset and limit

Answer

page and perPage

Answer

nextToken and previousToken

Question 15

Which Cisco platform provides an API to retrieve a list of issues affecting the network?

Accepted Answer

Cisco DNA Center. Cisco DNA Center includes issues API under the 'run your network' category.

Answer

Cisco IOS XE

Answer

Cisco Meraki

Answer

Cisco Webex