200-901 Practice Test 17 — 15 Questions

Question 1

Which OAuth 2.0 grant type is most appropriate for a server-to-server integration where no user interaction is required, such as a backend service calling Cisco API?

Accepted Answer

Client credentials grant. Client credentials grant is designed for server-to-server scenarios without user consent. Authorization code requires user interaction. Device code is for devices with limited UI.

Answer

Authorization code grant

Answer

Password grant

Answer

Device code grant

Question 2

Which HTTP header is used to specify the format of the request body (e.g., application/json) when sending a POST request to a REST API?

Accepted Answer

Content-Type. Content-Type indicates the media type of the request body. Accept indicates the desired response format. Authorization carries credentials.

Answer

Accept

Answer

Authorization

Answer

X-Requested-With

Question 3

A developer is implementing gRPC telemetry with dial-out streaming from a Cisco IOS XE device. Which component initiates the TCP connection to the collector?

Accepted Answer

The network device initiates the connection. In dial-out streaming, the network device (server) initiates the connection to the collector (client).

Answer

A third-party orchestrator initiates

Answer

The collector initiates the connection

Answer

Both initiate simultaneously

Question 4

A developer is using NETCONF to retrieve the running configuration of a network device. Which operation should be used?

Accepted Answer

. The operation retrieves configuration from a datastore (e.g., running).

Answer

<get>

Answer

<copy-config>

Answer

<edit-config>

Question 5

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 6

Which HTTP method should be used to partially update an existing resource in a REST API?

Accepted Answer

PATCH. PATCH is used for partial updates, while PUT replaces the entire resource.

Answer

PUT

Answer

DELETE

Answer

POST

Question 7

An automation engineer is using the Cisco DNA Center REST API to retrieve a list of network devices. The API call returns HTTP status code 200. What does this indicate?

Accepted Answer

The request was successful and data is returned.. HTTP status code 200 indicates a successful GET request where the server has processed the request and is returning the requested data in the response body. In the context of the Cisco DNA Center REST API, a 200 response to a GET /network-device call means the list of network devices was successfully retrieved and is included in the response payload.

Answer

The request succeeded but no content is returned.

Answer

The request was created successfully.

Answer

The request failed due to a client error.

Question 8

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 9

Which TWO of the following are valid methods for authenticating to a Cisco REST API? (Select two.)

Accepted Answer

API key in a custom header. API key and OAuth 2.0 token are common authentication methods. Basic auth (username:password) is also valid but less common for Cisco APIs. The question likely expects API key and OAuth 2.0.

Answer

IP address whitelisting

Answer

Username and password in the request body

Answer

Session ID in a cookie

Question 10

A developer is designing a Cisco Catalyst Center integration that uses the intent API. Which THREE of the following are available via the intent API? (Select three.)

Accepted Answer

Site hierarchy. The intent API provides access to network devices, site hierarchy, and issues. Command runner is also available but as a separate endpoint.

Answer

Network device configuration files

Answer

Real-time interface statistics

Question 11

In a RESTCONF API call to retrieve a specific interface configuration on a Cisco device, an engineer sends a GET request to /restconf/data/interfaces/interface=GigabitEthernet0/1. What Content-Type should be specified in the Accept header to receive YANG-defined JSON?

Accepted Answer

application/yang-data+json. RESTCONF uses application/yang-data+json for JSON encoding of YANG data.

Answer

text/plain

Answer

application/xml

Answer

application/json

Question 12

When using the Meraki Dashboard API, how should the API key be included in a request?

Accepted Answer

In the X-Cisco-Meraki-API-Key header. Meraki requires the API key in a custom header X-Cisco-Meraki-API-Key.

Answer

As a query parameter named 'apiKey'

Answer

In the Authorization header using Bearer scheme

Answer

In the request body as JSON

Question 13

An application uses NETCONF to configure a Cisco device. It sends an <edit-config> operation with the target 'running' and the operation 'merge'. Which statement about this operation is correct?

Accepted Answer

It will merge the new data into the running configuration, creating or updating as needed.. In NETCONF, <edit-config> with 'merge' operation will update existing data if present, or create if not. The 'running' datastore is typically not directly writable; 'candidate' is used for changes then commit. However, some devices allow direct edit of 'running' with 'merge' if supported.

Answer

It will delete the specified data from the running configuration.

Answer

It will remove all configuration and apply only the new data.

Answer

It will replace the entire running configuration with the new data.

Question 14

In Postman, what feature allows you to reuse a value like a base URL or token across multiple requests?

Accepted Answer

Environments. Environments store variables that can be referenced across requests.

Answer

Mock Servers

Answer

Workspaces

Answer

Collections

Question 15

In the Cisco DNA Center intent API, which HTTP method should be used to update a specific site's information?

Accepted Answer

PUT. For updating an existing resource, PUT is used to replace the entire resource, while PATCH is for partial updates. DNA Center intent API typically uses PUT for updates, but PATCH may also be supported. The question asks for update; PUT is the standard.

Answer

GET

Answer

POST

Answer

DELETE