CiscoProfessional level300-435Page 4 of 4

300-435 exam dumps: questions 301 to 321 of 321

Page 4 of the free 300-435 question bank for the Automating Cisco Enterprise Solutions exam. Questions 301 to 321 are listed below, the first 5 in full with answers and explanations. Back to page 1 for the exam overview and FAQ.

Question bank last updated February 2025

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Questions 301 to 305 of 321

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300-435 Question 301

Single answer

A network administrator is deploying an external captive portal solution to authenticate guest users in a Cisco network. The portal uses REST APIs to communicate with the Cisco Wireless LAN Controller (WLC). Which step is required to ensure successful integration of the external captive portal with the WLC?

A
Configure the WLC with the external captive portal URL and enable the external WebAuth feature.
B
Enable the RADIUS server on the WLC and link it to the external captive portal.
C
Configure the external captive portal to use SNMP for communication with the WLC.
D
Enable WPA2-Enterprise on the WLAN to support the external captive portal.

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Correct answer: A

Explanation

External captive portal integration with a Cisco WLC requires the controller to redirect unauthenticated users to the portal for authentication. This is achieved by configuring the external captive portal URL on the WLC and enabling the external WebAuth feature. The external portal communicates with the WLC using REST APIs to validate user credentials or provide access tokens.

A. Correct.
Correct. The WLC must be configured with the external captive portal URL and the external WebAuth feature enabled to redirect users to the portal for authentication.
B. Incorrect.
Incorrect. While RADIUS servers can be used for authentication, they are not directly linked to the external captive portal API integration in this context.
C. Incorrect.
Incorrect. SNMP is not used for communication between the external captive portal and the WLC; REST APIs are typically used instead.
D. Incorrect.
Incorrect. WPA2-Enterprise is not relevant to captive portal functionality, as it is focused on securing wireless access with 802.1X authentication.

300-435 Question 302

Single answer

You are automating a Cisco enterprise solution and need to configure WebHook Alert APIs to notify your team whenever a network device goes down. What is the primary action you must ensure to successfully receive and process these notifications?

A
Register the WebHook URL with the API provider and validate the subscription handshake.
B
Configure OAuth 2.0 authentication for all incoming WebHook requests.
C
Set up a polling mechanism to frequently check the WebHook endpoint for updates.
D
Create a custom WebHook API server with a static IP address to avoid connection issues.

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Correct answer: A

Explanation

WebHooks are used to deliver real-time event notifications from an API provider to a registered endpoint. To successfully receive these notifications, you must first register your WebHook URL with the provider and complete the handshake process to verify the subscription. This ensures that notifications are sent to a verified and correct endpoint. Other options, such as OAuth and polling, do not align with the WebHook mechanism.

A. Correct.
This is the correct answer because WebHooks require you to register a callback URL with the API provider and complete a validation process (handshake) to ensure notifications are sent to the correct endpoint.
B. Incorrect.
While authentication is important, OAuth 2.0 is not typically required for WebHook requests as they often rely on pre-shared secrets or tokens for security.
C. Incorrect.
WebHooks are event-driven and do not require polling. Polling is a separate mechanism that is not applicable to WebHooks.
D. Incorrect.
Although having a stable server is beneficial, a static IP is not a mandatory requirement for WebHook APIs as DNS-based URLs are commonly used.

300-435 Question 303

Select 3

A network administrator is using a Cisco DNA Center WebHook Alert API to monitor real-time events in the network. They want to ensure that their application can receive alerts whenever a device goes offline. Which of the following steps are necessary to successfully configure the WebHook Alert API and receive notifications?

A
Register the WebHook URL in Cisco DNA Center under the Event Notifications settings.
B
Configure the WebHook service to listen for incoming HTTP POST requests from Cisco DNA Center.
C
Manually poll the WebHook URL to fetch event updates from Cisco DNA Center.
D
Enable and subscribe to the specific device offline event in Cisco DNA Center.
E
Use the WebHook Alert API to send a confirmation email to the administrator for each alert received.

Show answer and explanation

Correct answers: A, B, D

Explanation

To successfully use the Cisco DNA Center WebHook Alert API, the WebHook URL must be registered in the Event Notifications settings. The WebHook service should actively listen for incoming HTTP POST requests to receive notifications. Additionally, specific events, such as 'device offline,' must be enabled and subscribed to in Cisco DNA Center to ensure relevant alerts are sent. WebHooks operate on a push-based notification system, so manual polling is unnecessary. Sending confirmation emails is outside the scope of the WebHook Alert API and requires custom implementation.

A. Correct.
Correct: The WebHook URL must be registered in Cisco DNA Center to enable sending event notifications to the application.
B. Correct.
Correct: The WebHook service must actively listen for incoming HTTP POST requests from Cisco DNA Center to process alerts.
C. Incorrect.
Incorrect: WebHooks do not require manual polling; they operate on a push model where notifications are sent automatically.
D. Correct.
Correct: Subscribing to specific events (such as a device offline notification) ensures that only relevant alerts are sent to the WebHook.
E. Incorrect.
Incorrect: The WebHook Alert API does not natively send confirmation emails; this would require custom logic implemented by the application.

300-435 Question 304

Select 3

Your organization has implemented a WebHook alert system to monitor network events in a Cisco DNA Center environment. You need to configure the WebHook API to deliver alerts to an external application whenever a network device goes offline. Which of the following steps are required to successfully set up the WebHook alert API in Cisco DNA Center?

A
Register the external application as a WebHook subscriber in Cisco DNA Center.
B
Create a custom policy in Cisco DNA Center to filter only device offline events.
C
Provide the external application's listener URL during the WebHook configuration.
D
Configure the external application to send a periodic health check to Cisco DNA Center.
E
Enable the WebHook service in Cisco DNA Center settings.

Show answer and explanation

Correct answers: A, C, E

Explanation

Setting up WebHook alert APIs in Cisco DNA Center involves registering the external application as a subscriber, configuring the listener URL, and enabling the WebHook service. These steps ensure that alerts are correctly sent to the external application. Filtering events and external health checks are optional and not part of the required setup process.

A. Correct.
Correct: To send alerts, you must register the external application as a WebHook subscriber in Cisco DNA Center so it can receive notifications.
B. Incorrect.
Incorrect: While filtering events is useful, specific event filtering is not mandatory for initial WebHook configuration. Alerts can be processed by the external application.
C. Correct.
Correct: During WebHook configuration, you need to provide the external application's listener URL to specify where alerts should be sent.
D. Incorrect.
Incorrect: The external application does not need to send a health check to Cisco DNA Center; it only needs to listen for alerts.
E. Correct.
Correct: Enabling the WebHook service in Cisco DNA Center is a mandatory step to activate WebHook-based alerting functionality.

300-435 Question 305

Single answer

A network engineer is configuring a WebHook alert API to notify an external application whenever a critical event occurs in the network. The engineer wants to ensure that the external application receives real-time updates and can process them immediately. Which key component must be configured for the WebHook API to function correctly?

A
The callback URL of the external application
B
The polling interval for the WebHook API
C
The authorization token for API authentication
D
The IP address of the network device generating the alert

Show answer and explanation

Correct answer: A

Explanation

WebHooks rely on a push-based mechanism, where updates are sent to a specified endpoint (callback URL) in real-time. Configuring the correct callback URL ensures that the external application receives the notifications as intended. Other elements like authorization tokens are important for security but are secondary to the callback URL in terms of the WebHook's core functionality.

A. Correct.
The callback URL is essential because it defines where the WebHook will send the alert notifications. Without it, the WebHook cannot deliver the updates to the external application.
B. Incorrect.
Polling intervals are not relevant for WebHooks, as they operate on a push-based mechanism rather than polling.
C. Incorrect.
While an authorization token is often required for security, it is not the primary component that determines where alerts are sent.
D. Incorrect.
The IP address of the network device generating the alert is not a required configuration for the WebHook API to send notifications.

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300-435 practice questions 301 to 321 of 321

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