Free 300-835 sample questions

Correct answer: Implement an exponential backoff algorithm with jitter in the Python script to retry failed requests.

A 503 Service Unavailable error from the AXL service is a classic indicator of rate limiting or service throttling. The most resilient way to handle this is by implementing a client-side retry mechanism. An exponential backoff algorithm increases the delay between retries after each consecutive failure, which prevents overwhelming the server. Adding jitter (randomness) to the delay helps to avoid a 'thundering herd' problem where multiple clients retry simultaneously. This is a standard best practice for consuming any rate-limited API.

Correct answers: Send an Adaptive Card with input fields to the user.; Listen for webhook events of type `attachmentActions`.

Adaptive Cards are necessary to present the interactive form to the user. This is the primary mechanism for collecting structured input from users within a Webex space.

When a user submits an Adaptive Card, the bot receives an `attachmentActions` event. The payload of this event contains the submitted data. Critically, the user's input values are sent directly to the bot via the webhook and are not posted as a message in the Webex space, thus meeting the security requirement.

Correct answer: xapi.event.on('IncomingCallIndication', ...)

The `IncomingCallIndication` event is specifically designed to notify subscribers when a new call is being offered to the endpoint. This event payload contains crucial information, including the `RemoteURI` of the caller, which is necessary to check against the specified SIP URI. Other events like `Call.Status` or `SystemUnit.State` only provide status changes and would not be the primary trigger for logic that needs caller-specific information at the moment the call arrives.

Correct answer: The Reports API, by creating and downloading a `MeetingUsageHistory` report.

The Webex Meetings Reports API is specifically designed for bulk retrieval of historical data. Creating a `MeetingUsageHistory` report allows an administrator to specify a date range and asynchronously generate a comprehensive CSV report containing all the required details. This is far more efficient than making thousands of individual API calls to the Meetings and Meeting Participants APIs, which would quickly lead to rate limiting and poor performance. The Events API is for real-time notifications, not historical data retrieval.

Correct answer: False

A fast-forward merge occurs when the target branch has not diverged from the source branch. In this case, Git simply moves the pointer of the target branch forward to the same commit as the source branch. No new merge commit is created because there are no conflicting changes to reconcile. A merge commit is only created during a three-way merge, which is necessary when the branches have diverged.

Correct answer: An ` ` request containing both ` ` and ` ` operations within the same SOAP envelope.

The ` ` AXL API method is specifically designed to handle multiple AXL operations as a single, atomic transaction. This is the most efficient and reliable method because it ensures that either all operations succeed or they all fail together, preventing a partially configured state. The developer can embed the ` ` request and the ` ` request (to associate the phone) within the ` ` block. This reduces network overhead and improves transactional integrity compared to sending multiple separate requests.

Correct answer: A global load balancer

For a highly available, multi-datacenter deployment, a global load balancer (GLB) is essential. The GLB presents a single public endpoint (URL) for the Webex webhook target. It then uses health checks to determine which data center and application instance is active and forwards the incoming webhook traffic accordingly. This provides both high availability (failover if one DC goes down) and load distribution. A simple reverse proxy or firewall does not provide this level of traffic management and failover capability across geographically separate sites.

Correct answer: Use the In-Room Controls Editor to design the UI panel and a JavaScript Macro using the `HttpClient` command to make the REST API calls.

This solution meets all requirements. The In-Room Controls Editor is the designated tool for creating custom user interfaces (UI Extensions) on the touch panels. A JavaScript Macro running directly on the endpoint can listen for `Widget Action` events from the custom panel. The macro can then use the built-in `xapi.command('HttpClient', ...)` function to send HTTP POST requests directly to the AV control system's REST API. Both the In-Room Control configuration and the macro can be deployed and managed centrally through Control Hub, and it requires no external server.

Correct answer: The Webex REST APIs are primarily synchronous, so the application must wait for the HTTP response of one call before making the next.

Most core Webex REST APIs (like creating spaces, memberships, and messages) operate synchronously. This means when an application sends an HTTP request, it blocks and waits until the server processes the request and sends back a response (e.g., a `200 OK` with the new object's data). For a sequential workflow, the challenge is simply managing this blocking behavior by making one call, waiting for its successful response, and then using information from that response (like the new space ID) to make the subsequent calls.

Correct answers: They allow for the development of custom agent desktop applications (gadgets) that can control agent state and handle calls.; They provide a mechanism for third-party applications to perform CTI actions on behalf of a contact center agent.

A primary use of the Finesse APIs is to create custom gadgets that are embedded within the Finesse agent desktop. These gadgets can interact with agent states (Ready, Not Ready), handle call control actions (Answer, Hold, Transfer), and integrate third-party applications.

The Finesse REST APIs expose agent and dialog (call) resources. An external application can authenticate as an agent and use these APIs to programmatically change agent state, make calls, answer calls, and manage other CTI functions, enabling integration with external CRMs or other business applications.