Cisco 200-901 - DevNet Associate (DEVASC)

In the Bash shell, the output of a command can be redirected to a file using the > operator. This operator takes the standard output (stdout) of the command and writes it to the specified file.

Option B (devnet > output.txt): This redirects the output of the devnet command to a file named output.txt.

Option A (devnet & output.txt): This is not a valid redirection operator.

Option C (devnet < output.txt): This uses the file output.txt as input to the devnet command, which is not the requirement.

Option D (devnet I output.txt): This is not a valid redirection operator.

When a developer is writing an application that interacts with a REST API, the status code of the response is a critical element used in conditional checks. The status code provides information about the success or failure of the request. Common status codes include:

200: OK (The request was successful).

201: Created (The resource was successfully created).

400: Bad Request (The server could not understand the request due to invalid syntax).

401: Unauthorized (Authentication is required and has failed or has not been provided).

404: Not Found (The requested resource could not be found).

By checking the status code, the application can determine if the request was successful and handle errors appropriately.

The HTTP POST method is used by both Meraki and Webex Teams APIs to send webhook notifications. Webhooks are a way for applications to provide other applications with real-time information. The POST method is used to send data to a server to create/update a resource. In the case of webhooks, the POST request carries the event data to the endpoint URL specified by the receiving service. More details on webhooks can be found in the Meraki Webhook Documentation and Webex Teams Webhooks.

The HTTP POST method is used by both Meraki and Webex Teams APIs to send webhook notifications. Webhooks are a way for applications to provide other applications with real-time information. The POST method is used to send data to a server to create/update a resource. In the case of webhooks, the POST request carries the event data to the endpoint URL specified by the receiving service. More details on webhooks can be found in the Meraki Webhook Documentation and Webex Teams Webhooks.

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Cisco DNA Center provides a REST API that allows users to interact with the network devices managed by the platform. To retrieve a list of network devices, an HTTP GET request is sent to the endpoint https://DNA-c_API_ADDRESS/api/v1/network-device/ . The response from this request contains a list of network devices in JSON format. This API endpoint allows for programmatic access to network device data, facilitating automation and integration with other systems. Detailed information about the Cisco DNA Center APIs can be found in the Cisco DNA Center API documentation.

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1 – B, 2 – E, 3 – C, 4 – D, 5 – A

A hybrid cloud solution is best suited for a company that wants to use on-premise infrastructure while also leveraging user self-service and scalability features of the cloud.

Hybrid Cloud:

Definition: A hybrid cloud combines on-premise infrastructure (private cloud) with public cloud services, allowing data and applications to be shared between them.

Scalability: Hybrid cloud allows for the flexibility to scale resources up or down as needed. When demand exceeds the capacity of the on-premise infrastructure, additional resources from the public cloud can be utilized.

Self-Service: Users can provision and manage resources without IT intervention, typically through a self-service portal.

Use Cases: This is ideal for businesses that need to maintain control over certain data and applications while taking advantage of the scalability and cost-efficiency of the public cloud.

Other Cloud Types:

Public Cloud: Fully managed by third-party providers and shared among multiple organizations. It offers high scalability but may have concerns about data privacy and control.

Private Cloud: Exclusively used by one organization, providing more control and security but may be limited in scalability compared to public cloud.

Multi-Cloud: Use of multiple cloud services from different providers, which can be complex to manage but provides flexibility and redundancy.

References:

Cisco Cloud Solutions: Hybrid Cloud Solutions

1 – D, 2 – A, 3 – H, 4 – F, 5 – G, 6 – E, 7 – C, 8 – B

In the context of webhooks, an application that interacts with a webhook can be described as a Listener or Receiver:

Listener: The application waits for incoming HTTP POST requests sent by the webhook.

Receiver: The application receives the data payloads from the webhook when certain events occur.