200-901 Practice Test 47 — 15 Questions

Question 1

Which HTTP status code indicates that a POST request successfully created a new resource?

Accepted Answer

201 Created. HTTP 201 Created is the standard response for a successful POST that creates a resource.

Answer

204 No Content

Answer

301 Moved Permanently

Answer

200 OK

Question 2

Refer to the exhibit. A security audit requires that the container cannot run as root. Which part of the pod spec ensures this?

Accepted Answer

runAsUser: 1000. Setting `runAsUser: 1000` in the pod's security context explicitly instructs the container runtime to launch the container's main process with a user ID of 1000, which is a non-root user. This directly satisfies the security audit requirement that the container cannot run as root (UID 0). The `runAsUser` field overrides the default behavior where containers run as root unless a non-root user is specified in the container image or security context.

Answer

The configMap volume

Answer

The image tag "latest"

Answer

allowPrivilegeEscalation: false

Question 3

In a Dockerfile, which instruction is used to set an environment variable that will be available at runtime?

Accepted Answer

ENV. ENV sets environment variables in the image that persist when the container runs.

Answer

RUN export VAR=value

Answer

LABEL

Answer

ARG

Question 4

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 5

A developer needs to retrieve a list of network devices from Cisco DNA Center with pagination. Which TWO URL components are typically used for offset/limit pagination?

Accepted Answer

Query parameter 'limit'. In Cisco DNA Center's REST API, pagination is typically implemented using the 'offset' and 'limit' query parameters. 'offset' specifies the starting index for the results, and 'limit' specifies the maximum number of items to return per page. This is a common pattern in many RESTful APIs for offset/limit pagination.

Answer

Link header

Answer

Query parameter 'page'

Answer

Path parameter 'page'

Question 6

A Python script using the Cisco ACI Toolkit (aciToolkit) fails with 'LoginError: unable to login to APIC'. The APIC is reachable via HTTPS. What is the most likely cause?

Accepted Answer

The script uses an incorrect APIC domain (e.g., 'apic' instead of the FQDN).. The Cisco ACI Toolkit (aciToolkit) requires the APIC domain to be specified as a fully qualified domain name (FQDN) or IP address that matches the APIC's certificate. Using a short name like 'apic' instead of the FQDN (e.g., 'apic.example.com') causes a TLS certificate hostname mismatch, leading to a login failure even though the APIC is reachable. The 'LoginError: unable to login to APIC' error typically indicates an authentication or connectivity issue, and in this scenario, the certificate validation fails because the toolkit verifies the server's hostname against the certificate's Subject Alternative Name (SAN).

Answer

The APIC has reached its maximum session limit.

Answer

The script uses HTTP instead of HTTPS.

Answer

The APIC is running an unsupported firmware version.

Question 7

An engineer is automating the configuration of SNMP on Cisco routers using Ansible. Which two modules are commonly used for this purpose? (Select TWO)

Accepted Answer

cisco.ios.ios_config. The cisco.ios.ios_config module is correct because it allows you to push raw CLI configuration lines to Cisco IOS devices, including SNMP-related commands like 'snmp-server community' or 'snmp-server host'. The cisco.ios.ios_snmp_server module is correct because it is a dedicated Ansible module that provides structured, idempotent management of SNMP server settings (e.g., communities, hosts, traps) without requiring raw CLI lines.

Answer

cisco.ios.ios_interface

Answer

cisco.ios.ios_command

Answer

cisco.ios.ios_banner

Question 8

An engineer is designing a CI/CD pipeline for a Python application. The pipeline should automatically run unit tests, build a Docker image, push it to a private registry, and deploy to a Kubernetes cluster. Which sequence of stages is correct?

Accepted Answer

Test -> Build -> Push -> Deploy. A CI/CD pipeline for a Python application must first run unit tests to validate code quality, then build the Docker image from the tested code, push the image to a private registry, and finally deploy to Kubernetes. This sequence ensures that only tested and built artifacts are deployed, preventing deployment of broken or untested code.

Answer

Build -> Test -> Push -> Deploy

Answer

Test -> Push -> Deploy

Answer

Test -> Deploy -> Build -> Push

Question 9

An application is secured using OAuth 2.0 for Cisco Webex API access. Which three components are involved in the authorization code grant flow? (Choose three.)

Accepted Answer

Client Secret. The authorization code grant flow in OAuth 2.0 requires the client to present its Client ID and Client Secret to authenticate itself to the authorization server. The flow begins by requesting an authorization code, which is then exchanged for an access token. The three components explicitly involved in this exchange are the Client Secret (A), Client ID (B), and Authorization Code (C).

Answer

Refresh Token

Answer

API Key

Question 10

A REST API uses offset and limit parameters for pagination. If the first request returns items 0-49 with limit=50 and offset=0, how should the next request be constructed to get the next page?

Accepted Answer

offset=50, limit=50. Pagination with offset and limit works by advancing the offset by the limit value to fetch the next set of items. The first request returned items 0-49 (offset=0, limit=50), so the next request should start at offset=50 with the same limit=50 to retrieve items 50-99. This ensures no overlap and no gaps in the data.

Answer

offset=1, limit=50

Answer

offset=50, limit=100

Answer

offset=0, limit=100

Question 11

Which TWO of the following HTTP methods are considered safe (idempotent and not modifying server state)? (Select two.)

Accepted Answer

GET. GET and HEAD are safe; they do not change server state and are idempotent.

Answer

PUT

Answer

DELETE

Answer

POST

Question 12

An engineer is troubleshooting a VoIP call quality issue. The call uses UDP and experiences packet loss. Which characteristic of UDP most likely contributes to the problem?

Accepted Answer

No retransmission of lost packets. UDP is a connectionless transport protocol that does not provide retransmission of lost packets. In VoIP, packet loss directly degrades call quality because lost audio data is never resent, leading to gaps or distortion in the conversation.

Answer

Ordered delivery guarantee

Answer

Connection-oriented setup

Answer

Flow control mechanism

Question 13

Refer to the exhibit. A developer receives this response when making a POST request to the Cisco DNA Center API to create a new device. What is the most likely issue?

Accepted Answer

The request body is missing the required field 'ipAddress'.. The error response includes a field 'missingParameters' with the value 'ipAddress', which explicitly indicates that the request body did not include the required 'ipAddress' field. Cisco DNA Center's API for device creation requires this field to identify the device on the network. Without it, the API cannot proceed with adding the device, resulting in a 400 Bad Request.

Answer

The API endpoint is incorrect.

Answer

The device IP address is already in use.

Answer

The API token has expired.

Question 14

In a microservices architecture, a REST API must support idempotent updates. Which HTTP method and design practice should be used?

Accepted Answer

PUT with the full resource representation. PUT is inherently idempotent per HTTP/1.1 RFC 7231, meaning repeated identical requests produce the same server state. In microservices, using PUT with the full resource representation ensures that any number of identical PUT requests result in the same resource state, which is critical for safe retries in distributed systems. This aligns with RESTful design principles where PUT replaces the entire resource at the given URI.

Answer

POST with a unique transaction ID

Answer

DELETE with a resource version

Answer

PATCH with a conditional header

Question 15

A developer is building an integration with Cisco Meraki and needs to handle rate limiting. Which two responses indicate rate limiting and how should they be handled? (Choose two.)

Accepted Answer

Retry-After header with wait time in seconds. The Retry-After header explicitly tells the client how long to wait before retrying a request, which is the standard way to handle rate limiting. Option C is correct because HTTP status code 429 (Too Many Requests) is the definitive signal from the server that the client has exceeded the allowed rate limit. Together, these two responses allow a developer to identify and respond to rate limiting by pausing requests for the specified duration.

Answer

X-RateLimit-Remaining header

Answer

Link header with rel="next"

Answer

HTTP status code 503