Free Adobe AD0-E103 Exam Practice Questions & Explanations
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A developer needs to see verbose logging for a single request scenario on a running AEM author instance and does not want the change to survive a restart or be captured in source control. They use the Web Console at /system/console/slinglog to add a temporary logger at DEBUG level.
Statement: Loggers created through the Sling Log Support Web Console are persisted as OSGi configurations and therefore remain active after the instance is restarted.
This is True. Loggers added through the Sling Log Support console are stored as OSGi factory configurations (org.apache.sling.commons.log.LogManager.factory.config) in the configuration admin persistence, so they do survive a restart. That is exactly why the developer's assumption in the scenario is wrong: to make the change genuinely temporary, the logger must be removed manually from the console afterwards. Only configurations created in the repository under /apps are captured in source control, but persistence across restarts applies to console-created loggers as well.
After a release, browsers keep serving an old version of the site's client library JavaScript even though the Dispatcher cache was cleared and publish serves the new file. The team wants a permanent solution so that every future deployment automatically forces browsers to fetch fresh client library files.
Which approach should the developer implement?
Browser caching is controlled by the URL plus response headers. Versioned clientlibs inject a content hash selector into the clientlib URL (for example /etc.clientlibs/.../clientlib.lc-<hash>-lc.min.js), so a content change produces a new URL that no browser has cached, while unchanged files can still be cached for a long time. B destroys performance by forcing every request to publish. C is not a solution the team controls. D is incorrect: allowProxy true is what enables serving via /etc.clientlibs, and it has nothing to do with cache headers.
A developer sets up a new local AEM development environment on a machine that already has the required JDK. They have the quickstart JAR and a license file, and need an author instance on port 4502 with sample content available and the ability to attach a debugger from the IDE.
Which set of actions accomplishes this?
AEM derives the run mode and port from the quickstart JAR file name (aem-author-p4502.jar), and the license file must sit in the installation directory. Starting from the command line lets you add JVM options, including the JDWP agent that exposes a remote debug port for the IDE. A is wrong because nosamplecontent is the production-ready run mode and removes the sample content the scenario asks for. C sets the wrong run mode and sling.properties is not how run modes are meant to be configured for this purpose. D is wrong: debug options are JVM start parameters, not a Web Console setting.
Authors report that after activating a page, the published page shows updated content but an included navigation component still renders stale links for some visitors. The Dispatcher cache is flushed by the Flush agent on activation, but the navigation appears on hundreds of pages that were not themselves activated.
Which Dispatcher configuration change best resolves the stale navigation?
The Dispatcher invalidates cached files by comparing their timestamp against .stat files. With /statfileslevel set to a value greater than 0, .stat files are maintained at each folder level up to that depth, so activating one page touches the .stat file that covers the whole content branch, causing shared elements like navigation to be re-rendered. B relates to caching authenticated requests and is a security-sensitive setting, not a staleness fix. C: gracePeriod actually defines how long invalidated-but-not-yet-updated content may still be served; setting it to 0 does not invalidate related pages. D would effectively disable caching benefits and is not a configuration fix.
A developer needs to capture DEBUG output from only the custom bundle package com.mycompany.core.services into a dedicated file logs/mycompany.log, without changing the verbosity of error.log. The change must be applied on a running AEM instance and be repeatable across environments through the code base.
Which approach meets these requirements?
The Apache Sling Logging Logger Configuration factory PID org.apache.sling.commons.log.LogManager.factory.config defines a logger with its own level, output file and one or more categories. Delivering it as a repository configuration (sling:OsgiConfig node or a .cfg.json file under /apps/<project>/osgiconfig/config.<runmode>) makes it part of the code base and applies without a restart. The optional companion writer factory (...factory.writer) only controls file rotation/size, not levels or categories, so D alone is insufficient. B changes global verbosity and floods error.log. C is a manual, non-repeatable file edit that AEM's Sling logging normally overrides and requires a restart.