200-901 Cisco Platforms and Development Practice Test 2 — 15 Questions

Question 1

A developer is using the Meraki Dashboard API to manage networks. Which two statements about pagination are correct?

Accepted Answer

The startingAfter parameter is used for cursor-based pagination.. Meraki supports both LinkHeader and cursor-based pagination via startingAfter/endingBefore parameters.

Answer

Paginated responses include a 'total' field showing the total count.

Answer

The API returns a maximum of 10 items per page.

Answer

The perPage parameter is required for all requests.

Question 2

A network engineer is planning to use model-driven programmability with YANG models. Which three statements about YANG models are correct?

Accepted Answer

pyang is a tool that can be used to explore YANG models.. A is correct because pyang is a command-line tool that validates and converts YANG models into various formats (e.g., tree, UML, YIN), enabling engineers to explore the structure and semantics of YANG modules. It is widely used in network automation workflows to inspect model hierarchies and dependencies before implementing NETCONF or RESTCONF configurations.

Answer

OpenConfig models are vendor-specific.

Answer

YANG models are only used with NETCONF, not RESTCONF.

Question 3

A developer is integrating with Cisco Webex Teams. Which two resources can trigger a webhook?

Accepted Answer

resource: 'rooms', event: 'created'. The Cisco Webex Teams API supports webhooks for the 'rooms' resource with the 'created' event, which triggers when a new room (space) is created. This is a documented and valid webhook combination that allows developers to react to room creation events in real-time.

Answer

resource: 'memberships', event: 'deleted'

Answer

resource: 'people', event: 'created'

Answer

resource: 'teams', event: 'updated'

Question 4

A network engineer needs 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 to retrieve the device list in Cisco DNA Center is GET /dna/intent/api/v1/network-device.

Answer

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

Answer

GET /dna/intent/api/v1/issues

Answer

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

Question 5

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 6

A developer is using the Meraki Dashboard API to manage networks. Which two statements about pagination are correct?

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

Accepted Answer

The API uses Link header pagination and the next page can be retrieved by following the URL in the Link header.. Meraki API uses Link headers for pagination, and a rel="next" link indicates there are additional pages to fetch.

Answer

The API uses page-based pagination with page and perPage parameters.

Answer

The API uses offset-based pagination and the next page can be retrieved by incrementing an offset parameter.

Answer

The API uses cursor-based pagination with startingAfter/endingBefore parameters.

Question 7

An engineer needs to authenticate to the Cisco DNA Center API to obtain a token. What is the correct authentication method and endpoint?

Accepted Answer

POST /dna/system/api/v1/auth/token with Basic auth header. Cisco DNA Center uses Basic authentication (with username:password) to POST to /dna/system/api/v1/auth/token to obtain a token.

Answer

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

Answer

GET /dna/intent/api/v1/auth/token with Basic auth header

Answer

POST /dna/system/api/v1/auth/token with API key in header

Question 8

A developer wants to send a message to a Webex room using the API. Which HTTP method and endpoint should they use?

Accepted Answer

POST /v1/messages. To send a message, use POST to /v1/messages with roomId or toPersonEmail.

Answer

POST /v1/rooms

Answer

PUT /v1/messages

Answer

GET /v1/messages

Question 9

An engineer is configuring IOS XE for RESTCONF. Which YANG module must be enabled to use RESTCONF?

Accepted Answer

restconf. RESTCONF is a standardized protocol (RFC 8040) that uses HTTP methods to access data defined in YANG modules. To enable RESTCONF on IOS XE, the 'restconf' module must be explicitly enabled in the configuration, typically via the 'restconf' global command. Without this module, the RESTCONF server will not start, and HTTP requests to the RESTCONF API will fail.

Answer

Cisco-IOS-XE-native

Answer

netconf-yang

Answer

nxapi

Question 10

A developer is using the Meraki Dashboard API and receives an HTTP 429 status code with a Retry-After header. What is the correct interpretation?

Accepted Answer

The rate limit has been exceeded; the client should wait the number of seconds specified in Retry-After before retrying.. HTTP 429 status code indicates 'Too Many Requests', meaning the client has exceeded the rate limit imposed by the Meraki Dashboard API. The Retry-After header specifies the number of seconds the client must wait before sending a new request to avoid further throttling. This is a standard rate-limiting mechanism defined in RFC 6585.

Answer

The API key is invalid and the request should be re-authenticated.

Answer

The server is temporarily unavailable; the client should retry immediately.

Answer

The request was successful but the response is too large.

Question 11

Which Cisco platform provides a cloud-managed networking solution with a RESTful API that uses an API key in the X-Cisco-Meraki-API-Key header?

Accepted Answer

Cisco Meraki. The Meraki Dashboard API uses an API key in the X-Cisco-Meraki-API-Key header.

Answer

Cisco Webex

Answer

Cisco DNA Center

Answer

Cisco IOS XE

Question 12

A network automation engineer needs to retrieve the Layer 2 topology for a specific VLAN from Cisco DNA Center. Which API endpoint should be used?

Accepted Answer

GET /dna/intent/api/v1/topology/l2/{vlanID}. The endpoint GET /dna/intent/api/v1/topology/l2/{vlanID} is used to retrieve Layer 2 topology for a VLAN.

Answer

GET /dna/intent/api/v1/issues

Answer

GET /dna/intent/api/v1/site

Answer

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

Question 13

An engineer is using EEM on an IOS XE device. They want to trigger an applet when a specific syslog message appears. Which event trigger type should they use?

Accepted Answer

event syslog pattern. EEM supports syslog pattern matching as an event trigger.

Answer

event interface

Answer

event cli match

Answer

event timer

Question 14

A developer is exploring YANG models on yangcatalog.org. They want to find a standard model for interface configuration that is vendor-neutral. Which model should they look for?

Accepted Answer

oc-interfaces. OpenConfig models are vendor-neutral. oc-interfaces is the OpenConfig model for interfaces.

Answer

Cisco-NX-OS-device

Answer

ietf-interfaces

Answer

Cisco-IOS-XE-native

Question 15

Which Cisco platform uses NX-API to allow programmatic access to CLI commands via JSON?

Accepted Answer

Cisco NX-OS. NX-OS devices support NX-API for programmatic access.

Answer

Cisco Meraki

Answer

Cisco DNA Center

Answer

Cisco IOS XE