Salesforce Updated Slack-Dev-201 Exam Questions and Answers by brooklyn

Option D accurately reflects Slack Connect behavior. Slack's official developer guidance explicitly states that messages sent through an incoming webhook into a Slack Connect channel are visible to all members of that shared channel, including users participating from external organizations. Option A is incorrect because the Events API can deliver events generated by external users participating in Slack Connect channels. Developers must therefore design applications to recognize that the actor may belong to another workspace. Option B is also incorrect: Slack specifically documents that shared channels do not cause duplicate event callbacks merely because the channel spans multiple workspaces. Developers should instead inspect authorization information in event payloads to determine where the application has authorization. Option C is overly broad. Incoming webhooks can send direct messages only under specific installation-team constraints; they cannot simply DM every external participant in a shared channel. Slack Connect therefore changes assumptions about workspace ownership, user identities, channel membership, and application authorization. Applications must distinguish the workspace where the app is installed from external workspaces represented in the shared conversation. This question belongs to Apps in the Slack Platform, particularly Slack Connect architecture and app behavior in externally shared channels.

A message posted to an authorized conversation is a standard example of activity that can generate an Events API notification. Slack provides specific message event subscriptions for different conversation types, including `message.channels`, `message.groups`, `message.im`, and `message.mpim`. The exact events an application receives depend on its subscribed event types, granted OAuth scopes, and access to the relevant conversation. Slack's own Events API walkthrough uses a message posted in a channel containing a bot as a canonical example: Slack sends the event to the application, the server acknowledges it, and application logic can then respond using a Web API method such as `chat.postMessage`. A user's local clock, browser-tab changes, and ordinary billing renewal are not Events API event triggers represented by these developer subscriptions. Therefore, A is correct.

Slack's OAuth 2.0 authorization-code flow issues a temporary authorization code after the installing user reviews and approves the permissions requested by the application. Slack redirects the user to the application's configured redirect URI with this temporary code. The application backend then sends the code to Slack's token-exchange endpoint together with the required application credentials. If the exchange succeeds, Slack returns the applicable access credentials, which can include bot or user tokens depending on the requested authorization. Slack explicitly summarizes the process as requesting scopes, receiving user approval, and exchanging a temporary authorization code for an access token. A workspace ID identifies the Slack workspace but is not exchanged for credentials. Application manifests describe configuration, and user passwords must never be collected as part of Slack OAuth. Therefore, B is correct.

Slack Developer Tools is specifically designed to provide Slack-platform development assistance directly inside Slack. Its capabilities include inspecting existing Slack messages to understand how those messages were constructed and accessing Slack method documentation without leaving the workspace. The official Slack Developer Tools listing describes an Inspect action available from a message's menu. Developers can use it to examine the underlying structure of a message, making it useful for understanding Block Kit layouts and message payload composition. The tool also provides the /sdt docs [method name] command, which retrieves documentation and implementation information for Slack API methods. Postman is useful for constructing and testing HTTP requests against Slack's Web API, but it does not provide the same Slack-native message inspection function. Browser developer tools inspect browser-side behavior and network activity rather than Slack message structures as a dedicated platform feature. The Slack CLI provides significant development, deployment, and application-management functionality, but the option's claimed built-in debugger is not the specific tool described for this requirement. Therefore, A remains correct. This directly maps to the Tools objective of the Slack Developer curriculum.