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Adobe AD0-E124 Exam Syllabus Topics:

Adobe Experience Manager DevOps Engineer Expert Sample Questions:

1. A customer is using the Content Transfer Tool (CTT) to migrate to AEM as a Cloud Service. Only published content should be migrated to the target Production instance.
Which two actions should the DevOps engineer take? (Choose two.)

A) Install CTT on the source Author instance and migrate all content to the target Author instance.
B) Install CTT on the source Publish instance and migrate all content to the target Publish instance.
C) Install CTT on the source Author instance and migrate all content to the target Author and Publish instances.
D) Install CTT on the source Publish instance and migrate all content to the target Author instance.
E) Copy and run the publish content tree workflow on the target Author instance.

2. What should be done if a critical OSGi configuration change causes AEM to become unresponsive?

A) Restart AEM and manually reapply the previous settings
B) Revert to the last known working OSGi configuration through the /system/console/configMgr UI
C) Deploy a package with the previous configuration settings
D) Use CRXDE Lite to modify the OSGi configuration nodes

3. A DevOps engineer is managing an AEM as a Cloud Service Sites environment for a customer. After development tested the Maven build locally, a new development pipeline is executed. The development pipeline fails in the build steps with the following errors:
[Queue Processor for Subscriber agent forwardPublisherSubscriber] org.apache.jackrabbit.vault.fs.io.Importer Error while processing...
Caused by: org.apache.sling.api.resource.PersistenceException: Unable to commit changes to session.
Caused by: javax.jcr.AccessDeniedException: OakAccess0000: Access denied Message: Error trying to extract package at path /etc/packages/com.myapp/myapp-base.content.zip.
What should the DevOps engineer do?

A) Add ACLs for the sling-distribution-importer user via curl command.
B) Restart the sling-distribution-importer bundle via the OSGi Web Console.
C) Add ACLs for the sling-distribution-importer user via the repoinit script.
D) Add ACLs for the sling-distribution-importer user via User Admin.

4. A DevOps engineer is called in to resolve a repeated performance issue. A problem is occurring with the Author performance due to a resource allocation. The AEM platform is set up using the cold-standby Author cluster with the same resources allocation as the primary.
What should the DevOps engineer do?

A) Upscale the Author instance size.
B) Run an online-compaction on the primary Author.
C) Enable the cold-standby Author as primary.

5. A DevOps engineer is running a test compilation of the project source code and encounters errors during a local compilation. The project source code is intended to be deployed to a development environment on Adobe Managed Services.
The project source code has been upgraded from Java 8.
The project source code has been merged from multiple repositories into a single code base.
The project source code has been refactored to compile with Azul Zulu JDK 11.0.10 The project is intended for AEM 6.5.9 with a Cloud Manager deployment.
The following errors have been flagged in the 'error.log'.
15.09.2020 00:30:20.868 *ERROR* [FelixStartLevel] org.apache.sling.scripting.sightly bundle org.apache.sling.scripting.sightly:1.1.2.1_4_0 (557)
[org.apache.sling.scripting.sightly.impl.engine.extension.use.JavaUseProvider(3410)] :
Error during instantiation of the implementation object
(java.lang.NoClassDefFoundError: jdk/internal/reflect/ConstructorAccessorImpl) java.lang.NoClassDefFoundError: jdk/internal/reflect/ConstructorAccessorImpl at java.base/jdk.internal.misc.Unsafe.defineClass0(Native Method) at java.base/jdk.internal.misc.Unsafe.defineClass(Unsafe.java:1192) at java.base/jdk.internal.reflect.ClassDefiner.defineClass(ClassDefiner.java:63) at java.base/jdk.internal.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:400) at java.base/jdk.internal.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:394) at java.base/java.security.AccessController.doPrivileged(Native Method)
...
What is causing this issue?

A) An unsupported version of JDK was used to compile
B) Upgrade the project source code to JDK 17
C) A class definition was not defined in the pom.xml
D) Missing packages in the boot delegation property

Solutions: