200-901 Cisco Platforms and Development Practice Test 3 — 15 Questions

Question 1

A developer wants to use Cisco DNA Center to change the network configuration. Which TWO API categories provide capabilities to modify the network? (Choose two.)

Accepted Answer

Run your network. Change your network and Run your network (command runner) can modify the network. Know your network is read-only.

Answer

Platform

Answer

Know your network

Answer

Monitor your network

Question 2

A network automation engineer is evaluating options for model-driven programmability on Cisco devices. Which THREE are valid YANG model sources or tools? (Choose three.)

Accepted Answer

pyang. pyang is a YANG tool, yangcatalog.org is a repository, and Cisco native models are valid sources. OpenConfig is a standard, but oc-interfaces is a model, not a source/tool.

Answer

NETCONF

Answer

oc-interfaces

Question 3

A developer is building an integration with Cisco Webex and needs to retrieve information about the authenticated user. Which TWO APIs can be used? (Choose two.)

Accepted Answer

GET /v1/people/me. GET /v1/people/me returns the current user. GET /v1/people with an email also returns user info. POST /v1/people is not valid.

Answer

GET /v1/rooms

Answer

GET /v1/memberships

Answer

POST /v1/people

Question 4

A network engineer wants to retrieve a list of all network devices from Cisco DNA Center using the REST API. Which authentication method is required to obtain an access token?

Accepted Answer

Basic Authentication with username and password to obtain a token. Cisco DNA Center uses Basic Authentication to obtain a token by sending a POST request to /dna/system/api/v1/auth/token with a Basic Auth header. The returned token is then used in subsequent API calls.

Answer

OAuth 2.0 client credentials grant

Answer

API key in the X-Cisco-Meraki-API-Key header

Answer

Bearer token in the Authorization header directly with no initial authentication

Question 5

A developer is using the Meraki Dashboard API to retrieve a list of clients for a given network. The initial GET request returns a 429 HTTP status. What should the developer do to handle this response appropriately?

Accepted Answer

Check the Retry-After header and wait that many seconds before retrying. The Meraki API rate limits at 5 requests per second. A 429 response includes a Retry-After header indicating the number of seconds to wait before retrying.

Answer

Convert the request to a POST method to bypass the rate limit

Answer

Ignore the 429 and send the request again with a different API key

Answer

Send a DELETE request to clear the rate limit counter

Question 6

A developer wants to send a message to a Webex room using the API. The message should contain a simple text body. Which endpoint and parameter are required?

Accepted Answer

POST /v1/messages with body parameter 'roomId' and 'text'. To send a message, a POST request is made to /v1/messages with a JSON body containing roomId and text (or markdown). roomId identifies the target room.

Answer

GET /v1/messages with query parameter 'roomId'

Answer

POST /v1/memberships with body parameter 'message'

Answer

POST /v1/rooms with body parameter 'text'

Question 7

An engineer is configuring Cisco IOS XE for RESTCONF programmability. Which configuration is necessary to enable the RESTCONF API?

Accepted Answer

netconf-yang and restconf. RESTCONF requires the 'restconf' service to be enabled globally. Additionally, 'netconf-yang' is often enabled together, but 'restconf' is the key for RESTCONF.

Answer

ip scp server enable

Answer

ip http server and ip http secure-server

Answer

feature nxapi

Question 8

Using the Cisco DNA Center API, which endpoint should be queried to retrieve the Layer 2 topology for a specific VLAN?

Accepted Answer

GET /dna/intent/api/v1/topology/l2/{vlanID}. Cisco DNA Center provides /dna/intent/api/v1/topology/l2/{vlanID} to retrieve Layer 2 topology information for a given VLAN.

Answer

GET /dna/intent/api/v1/issues

Answer

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

Answer

GET /dna/intent/api/v1/topology/physical-topology

Question 9

A developer is using the Meraki Dashboard API to list all organizations. The base URL is https://api.meraki.com/api/v1/. What is the correct endpoint and authentication method?

Accepted Answer

GET /organizations with X-Cisco-Meraki-API-Key header. The Meraki Dashboard API uses a custom API key for authentication, sent via the `X-Cisco-Meraki-API-Key` header. To list all organizations, the correct HTTP method is GET, and the endpoint is `/organizations` (relative to the base URL `https://api.meraki.com/api/v1/`). This matches option C exactly.

Answer

POST /organizations with Bearer token in Authorization header

Answer

GET /organizations with Basic Auth username and password

Answer

GET /v1/organizations with Cookie authentication

Question 10

An EEM applet is triggered when a specific syslog message pattern appears. Which action should be used to send a custom syslog message?

Accepted Answer

action 1.0 syslog msg "Custom event occurred". EEM applets use 'action syslog msg ' to generate a syslog message.

Answer

action 1.0 cli command "show logging"

Answer

action 1.0 info type routername

Answer

action 1.0 set 1.0 _syslog_msg "Custom event"

Question 11

Which YANG model type is defined by industry standards and supported by multiple vendors, offering interoperability?

Accepted Answer

OpenConfig YANG models. OpenConfig models are vendor-neutral, community-driven YANG models that promote interoperability across different network devices.

Answer

MIB-based models

Answer

IETF YANG models

Answer

Cisco native YANG models

Question 12

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 13

When using the NX-API on Cisco NX-OS, which HTTP method is used to send CLI commands in JSON format?

Accepted Answer

POST. NX-API uses POST requests to the /ins endpoint with a JSON body containing the CLI commands and the type (cli_show or cli_conf).

Answer

PUT

Answer

GET

Answer

PATCH

Question 14

In Cisco DNA Center, which API category includes the ability to deploy a configuration template to devices?

Accepted Answer

Change your network. The 'Change your network' category includes template deployment, plug and play, and other configuration changes.

Answer

Run your network

Answer

Know your network

Answer

Platform

Question 15

Which Meraki API response header provides information for paginating through a large result set?

Accepted Answer

Link. Meraki uses the Link header (LinkHeader) with 'next' and 'prev' URLs, or alternatively the startingAfter/endingBefore parameters. The Link header is standard for pagination.

Answer

Content-Range

Answer

X-RateLimit-Remaining

Answer

Retry-After