200-901 Cisco Platforms and Development — 15 Questions

Question 1

Which THREE items are valid triggers for Cisco EEM (Embedded Event Manager) applets? (Choose three.)

Accepted Answer

SNMP trap receipt. EEM supports syslog pattern match, SNMP trap receipt, and timer triggers. CLI command match is not a valid EEM applet trigger.

Answer

CLI command match

Answer

HTTP request receipt

Question 2

Which THREE of the following are valid event triggers in Cisco EEM?

Accepted Answer

snmp oid. EEM supports event triggers including snmp oid, timer, interface (line protocol change), and syslog pattern. HTTP request is not a valid EEM event trigger.

Answer

http request

Question 3

A developer is building an automation script to retrieve network device details from Cisco DNA Center. The script needs to authenticate and then call the device list API. Which THREE steps are required in the correct sequence?

Accepted Answer

Send a GET request to /dna/intent/api/v1/network-device. To retrieve network device details from Cisco DNA Center, the correct sequence is: first, authenticate by sending a POST request to /dna/system/api/v1/auth/token with Basic Auth credentials (option D). Next, use the returned token in the Authorization header as a Bearer token for all subsequent API requests (option C). Finally, send a GET request to /dna/intent/api/v1/network-device with the Bearer token set (option A). Option B is incorrect because Cisco DNA Center uses token-based authentication, not cookie-based. Option E is incorrect because the token should be passed in the header, not as a query parameter.

Answer

Enable cookie-based authentication in the HTTP client

Answer

Include the token as a query parameter in the device list request

Question 4

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 5

An application uses the Meraki Dashboard API to fetch the list of networks for an organization. The API response includes a Link header with rel='next' pointing to the next page. Which pagination method is the API using?

Accepted Answer

LinkHeader-based pagination. Meraki supports LinkHeader-based pagination. The Link header with rel='next' indicates the next page URL.

Answer

Cursor-based pagination using startingAfter/endingBefore parameters

Answer

Offset-based pagination using page and perPage parameters

Answer

Token-based pagination using a nextPageToken parameter

Question 6

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 7

A network engineer is using Cisco IOS XE RESTCONF to retrieve the hostname of a device. The YANG module used is 'Cisco-IOS-XE-native'. Which URL path is correct?

Accepted Answer

GET /restconf/data/Cisco-IOS-XE-native:native/hostname. RESTCONF on IOS XE uses the path /restconf/data/ followed by the YANG path. The hostname is under native/hostname.

Answer

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

Answer

GET /restconf/api/data/Cisco-IOS-XE-native:native/hostname

Answer

GET /restconf/operational/Cisco-IOS-XE-native:native/hostname

Question 8

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 9

A developer is automating network configuration using Cisco DNA Center. They want to deploy a configuration template to multiple devices. Which API category should they use?

Accepted Answer

Change your network. Template deployment falls under 'change your network' API category.

Answer

Platform

Answer

Run your network

Answer

Know your network

Question 10

An application sends many requests to the Meraki API and receives HTTP 429 errors. The response includes a 'Retry-After' header. What does this status code indicate?

Accepted Answer

The client has exceeded the rate limit. HTTP 429 means too many requests; rate limiting is in effect. Retry-After indicates the wait time.

Answer

The requested resource was not found

Answer

The server encountered an internal error

Answer

The API key is invalid

Question 11

A developer is using NX-API on a Cisco Nexus switch to execute CLI commands via JSON. Which endpoint and method should be used?

Accepted Answer

POST /ins with JSON body. NX-API uses POST /ins with JSON payload containing CLI commands.

Answer

GET /restconf/data/Cisco-NX-OS-device:cli

Answer

POST /api/cli with XML body

Answer

GET /ins?cmd=show version

Question 12

Which YANG model is an OpenConfig model commonly used for interface configuration?

Accepted Answer

openconfig-interfaces. OpenConfig models include oc-interfaces for interface configuration.

Answer

Cisco-IOS-XE-interfaces

Answer

ietf-interfaces

Answer

openconfig-routing-policy

Question 13

A developer wants to create a Webex webhook that triggers when a new message is posted in any room the bot is in. Which resource event should they subscribe to?

Accepted Answer

resource: 'messages', event: 'created'. To trigger on new messages, subscribe to 'messages' resource with 'created' event.

Answer

resource: 'messages', event: 'updated'

Answer

resource: 'rooms', event: 'created'

Answer

resource: 'memberships', event: 'created'

Question 14

A network administrator wants to use EEM on an IOS XE device to send a syslog message whenever a specific CLI command is entered. Which event detector should be used?

Accepted Answer

event cli match. EEM can trigger on CLI command entry using 'cli match' event.

Answer

event syslog pattern

Answer

event interface

Answer

event timer

Question 15

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