Adobe AD0-E123 Exam Questions

Given the dispatcher configuration snippet provided in the image, we can understand the URL patterns that will be ignored (not cached) by the dispatcher. The configuration under /ignoreUrlParams shows patterns to match query parameters in the URLs:

/0001 { /glob '*' /type 'deny' } means that by default, all query parameters are ignored (not cached).

/0002 { /glob 'search' /type 'allow' } specifically allows caching for URLs with the 'search' parameter.

/0003 { /glob 'order' /type 'allow' } specifically allows caching for URLs with the 'order' parameter.

Based on this, let's evaluate the options:

A) /myproduct/myrecipe.html?search=searchparam --- This URL will not be cached because the 'search' parameter is allowed, but the actual value 'searchparam' does not match any allow pattern. B) /myproduct/myrecipe.html?search=s&order=asc&brand=ad --- This URL will not be cached because although 'search' and 'order' parameters are allowed, the 'brand' parameter is not allowed according to the configuration. C. /myproduct/myrecipe.html?brand=mybrand --- This URL will be cached because there are no allowed parameters, so the default deny does not apply, and the page can be cached without considering the 'brand' parameter.

Therefore, the page that will be cached on the dispatcher is the one in option C, as it does not contain any of the explicitly allowed query parameters ('search' or 'order'), and all other parameters are ignored by default.

In Sling Models, annotations are used to map request parameters, attributes, and properties to fields in Java classes. When an HTL script passes parameters to a Sling Model, the Sling Model can use annotations to access these parameters.

Option B uses the @RequestAttribute annotation which allows the Sling Model to retrieve an attribute that has been set on the Sling HTTP request object. This is a valid approach to read the 'testParam' if it has been set as a request attribute.

Option C uses the @Inject annotation with the name attribute specifying the name of the parameter to inject. This is another valid approach to read the 'testParam' from the request.

Option A is incorrect because @Named is not the correct annotation for retrieving request attributes or parameters.

Option D is incorrect because there is no @Prop annotation in Sling Models; it's likely confused with the @Property annotation which is not the correct one for this context either.

When the dispatcher encounters a URL that is defined as 'deny' in the /filter settings, the out-of-the-box response is typically a 403 Forbidden error. This HTTP status code indicates that the server understands the request but refuses to authorize it. This means the dispatcher configuration has rules set up to explicitly prevent access to certain patterns of URLs, and when such a pattern is matched, it will deny the request, resulting in a 403 response.

To start an AEM instance in debug mode automatically, without manually providing JVM parameters each time, a developer can add the required JVM parameters to the AEM instance's start script. This script is executed every time the AEM instance is started, and by including the debug parameters there, the instance will automatically start in debug mode each time. The start script is typically named start.bat (for Windows) or start.sh (for Unix-based systems) and is located in the AEM installation directory.

Adding JVM parameters to a properties file under a run mode-specific directory (Option A) or setting an OSGi configuration (Option B) are not standard methods for configuring JVM debug parameters for AEM startup.

The CQ_JVM_OPTS parameter in an AEM start script is used to set options for the Java Virtual Machine (JVM). The setting '-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n' enables the Java Debug Wire Protocol (JDWP) agent for the JVM, allowing a debugger to attach to it. The suspend=n flag means the JVM will not suspend at the start but will wait for a debugger to connect on port 8000. This effectively runs the AEM instance in debug mode, which is useful for development and troubleshooting.

Option B is incorrect because the suspend=n setting means the JVM does not suspend on start-up.

Option C is incorrect because this parameter is for debug mode, not for specifying the run mode of the AEM instance.