AEM DevOps Engineer Expert Mock Test 2 — AD0-E124

Mock test disclaimer: This is an independent sample practice test created by AEM CQ5 Tutorials. It is not created, endorsed, approved, sponsored, or affiliated with Adobe. All questions are original practice questions based on publicly available Adobe certification objectives and official AEM documentation. They are not actual, leaked, recalled, copied, or reproduced Adobe certification questions.

Passing score: 70% Questions per attempt: 30

Question 1

An AEM as a Cloud Service author instance logs repeated 'OutOfMemoryError: Java heap space' during large package installs. What should you examine first to diagnose the problem?

A. Add more author instances to the pipeline so that the large package install load is split across several nodes B. Restart the publish tier so its replication queue is fully cleared before the large install begins running C. Environment metrics and the error log, to identify which operation drives heap usage over time D. Disable the Dispatcher cache entirely so that the author instance receives more free memory for the install job

Question 2

After deploying a custom bundle, the Felix console shows it in the Installed state instead of Active. Which check identifies the cause?

A. Clearing the OSGi bundle cache from the CRXDE Lite console, then reinstalling the bundle from its package B. Unresolved Import-Package requirements shown on the bundle's details page C. Checking the cq:lastModified property on the bundle node stored under the /apps folder in the repository D. Increasing the Sling thread pool size in the Sling Queue configuration, then restarting the affected instance

Question 3

A feature needs an OSGi configuration that applies only to publish instances and should not exist on author. How should the configuration be stored?

A. In the sling.properties file on the author instance with a publish flag that the runtime reads at startup B. In a node property named sling:resourceType set to the value publish on the configuration node itself C. Under /etc/cloudservices with a publish suffix appended to the configuration file name in that folder D. Under a config.publish folder, so it is applied only when the publish runmode is active

Question 4

A developer needs DEBUG logging for a custom package on a running author instance without a restart. Which approach meets this need?

A. Edit the error.log4j file on disk, then restart the instance so that the new log level takes effect B. Set debug=true in the sling.properties file on the instance, then redeploy the affected bundle C. Enable Dispatcher debug mode in the farm configuration and reload the Apache web server process D. A logger entry in the Sling Logging configuration in the Felix console

Question 5

A team needs three separate configurations of the same OSGi service, each pointing to a different endpoint. Which approach is correct?

A. Create three configurations with the same PID, each placed in a different runmode configuration folder B. Define properties suffixed .1, .2 and .3 inside one file, which OSGi reads as three separate services C. Factory configurations sharing one factory PID with distinct name suffixes D. Create one configuration, then restart the service three times with a different value on each restart

Question 6

A developer needs an API key available to the code only in the stage environment. Where should the key be defined?

A. In the pom.xml as a Maven property that the pipeline reads at build time and bakes into the package B. Committed to a config folder under /apps for the stage runmode so the value is loaded at startup C. As a secret environment variable scoped to the stage environment type in Cloud Manager D. As a plain text variable in the Dispatcher farm file that every environment loads when it starts

Question 7

A program needs an environment that mirrors production sizing for load testing but does not serve live traffic. Which Cloud Manager option meets this need?

A. The Stage environment, which mirrors production and serves no live traffic B. Create an additional Production environment and use it for load testing before the real launch date C. Enable autoscaling on the Dev environment so that it grows to match the production capacity profile D. Use a second program that reuses the same pipeline definition and copies the production environment settings

Question 8

A team migrating from AEM 6.5 to AEM as a Cloud Service must restructure legacy repository content. Which tool is designed for this task?

A. Package Manager with a filter limited to the /apps path, exported from the legacy author instance B. Repository Modernizer, which restructures legacy content for Cloud Service C. The Dispatcher SDK validator, which checks the httpd configuration files for syntax and best practices D. The AEM Maven archetype used to generate new projects with the standard module layout and settings

Question 9

A CI job calls the Cloud Manager API and must authenticate without user interaction. Which credential should be created in the Adobe Developer Console?

A. An OAuth Server-to-Server credential linked to a technical account with Cloud Manager API access B. A personal access token generated from an individual developer's Adobe ID profile page in the console C. An Adobe ID login with the password stored in the CI tool's variables for unattended authentication D. An Experience Cloud API key scoped to the Dispatcher configuration and shared with the build team

Question 10

Which Cloud Manager role is needed to change environment variables for a stage environment?

A. Developer, since environment variables are treated as part of the application code in the repository B. Quality Assurance, which controls all configuration changes made to every environment in the program C. Program Manager or Deployment Manager on the program D. Business Practitioner, which manages the pipeline definitions and the environment settings for the team

Question 11

A Dispatcher filter must block /system/console for public traffic. Which filter design follows the secure default?

A. Allow all requests by default, then add a deny rule that blocks only the /system/console path entirely B. Start with a rule that denies all requests, then add specific allow rules for required paths C. Remove the /filter section entirely, since the publish tier is expected to handle all access control D. Use the /renders section to restrict requests by path, since renders control which URLs are served

Question 12

After a page is published, the Dispatcher keeps serving the previous version, and the replication agent reports success. What is the most likely cause?

A. The Dispatcher cache is disabled for all HTML files served from the content tree on this farm B. The Apache rewrite rules send the incoming request straight to the publish instance, skipping cache C. The flush does not touch the statfile at the level covering the cached page's path D. The page carries a cq:lastModified date set in the future, which blocks the Dispatcher from caching

Question 13

Pages requested with a tracking query parameter bypass the cache, which increases publish load. What should you adjust?

A. Configure /ignoreUrlParams so the tracking parameter is ignored when the cache key is built B. Disable query string handling in the publish replication agent so that parameters never reach publish C. Add the tracking parameter to the author Dispatcher filter as an allowed path for the content tree D. Remove the cache rule for every URL that contains a question mark in the request path or query

Question 14

A security scan reports that /crx/de is reachable through the public Dispatcher. What should you change?

A. Remove the /crx/de node from every author replication agent so that it is no longer exposed B. Set the /crx/de servlet to read-only in the CRXDE Lite settings page and then restart the author C. Move the Dispatcher into a separate Cloud Manager environment that is not connected to publish D. A /filter deny rule for /crx/de in the publish Dispatcher, then redeploy

Question 15

A Cloud Manager pipeline shows the Deploy to Stage step failed on a health check, but the build succeeded. Which item should you examine first?

A. The Stage deployment execution log, which shows the health check failure B. The code quality report from the last successful build, which lists the findings for each module C. The Git commit history of the main branch, which shows who changed each file in the last release D. The Dispatcher cache statistics from the production tier, which summarize the hit ratio per path

Question 16

A content package build fails because the project declares com.adobe.aem:aem-sdk-api with compile scope and the package ends up embedding the entire API. What is the correct fix?

A. Change the aem-sdk-api dependency scope to test so it is excluded from the content package B. Change the aem-sdk-api dependency scope to provided C. Change the packaging type of the content module to jar so that Maven stops embedding dependencies D. Add the API as a system-scoped dependency that points to a local jar file on the build server

Question 17

The ui.frontend module fails with a message that the Node binary cannot be found. Which change fixes the pipeline build?

A. Add frontend-maven-plugin with an install-node-and-npm execution B. Install Node.js on the build agent using a shell script committed to the repository root folder C. Remove the ui.frontend module and move all of the JavaScript into the ui.apps module instead D. Set the NODE_PATH variable in the Dispatcher configuration so the build can locate Node

Question 18

A hotfix content package must be installed identically on several on-premise AEM 6.5 instances from a CI job. Which approach is the most reliable?

A. Call the Package Manager HTTP API from the CI job for each instance B. Copy the package into each instance's crx-quickstart/install folder by hand before each release run C. Install the package on one instance and rely on replication to propagate it to every other node D. Upload the package through the Cloud Manager interface separately for each of the instances

Question 19

A Cloud Manager pipeline fails at the Code Quality step with a security finding. Where do you find the file and line of the issue?

A. In the Git tags of the feature branch, where each tag records the findings and the source location B. In the Code Quality report, which lists the file and line for each finding C. In the Dispatcher access log from the last build, which records each request and its error code D. In the Experience Cloud audience settings, under the security tab for the affected program

Question 20

Which statement correctly describes how changes are promoted to production in Cloud Manager?

A. Production deployments can skip the Stage environment when the build is tagged as a hotfix release B. Each environment builds its own artifact from source code at the time the deployment runs C. The same build moves through Stage testing before it reaches Production D. Stage and Production share one database, so every deployment produces identical results everywhere

Question 21

A content package build leaves out the /apps/myproject/config folder. Which file controls which repository paths are included in the package?

A. The filters element in the parent project's pom.xml, which lists every path to include B. filter.xml in the content package's META-INF/vault folder C. The settings.xml file stored in the local .m2 directory of the developer's home folder D. The .content.xml file stored in the root of the /apps folder in the repository tree

Question 22

A developer pushes a feature branch and needs its changes deployed to a development environment for review. Which pipeline type should be used?

A. A production pipeline run with the skip-tests option enabled so the feature branch deploys quickly B. A development pipeline that targets a Development environment C. A stage pipeline that deletes the branch automatically after the deployment completes successfully D. A pipeline created from an Adobe Developer Console project that holds the feature branch credentials

Question 23

A multi-module Maven project fails because the all package is built before the ui.apps module it depends on. What is the correct fix?

A. Rename the modules alphabetically so that the reactor builds the ui.apps module before the others B. Add the -T 1 option to the Maven command so that the build runs with a single thread only C. Move the all package to the repository root folder so that it is built after every other module D. Declare the inter-module dependency so the reactor builds it first

Question 24

Users report slow page loads during a campaign. The Dispatcher cache hit ratio is low while publish CPU is high. Which analysis is most useful?

A. Review only the author garbage collection logs for the days before the campaign started B. Count the content packages that were installed on the author tier during the previous month C. Correlate cache hit ratio drops with publish CPU and latency during the campaign D. Compare the total size of the /apps folder against the file list in the Git repository

Question 25

A publish environment must handle a predictable traffic spike during a sale. Which action is most appropriate?

A. Load test on a production-sized Stage environment and confirm capacity with Adobe B. Increase the Java heap size on the author tier so that it can absorb the publish traffic spike C. Add more replication agents on the author instance so that publish receives content faster D. Disable caching on the Dispatcher so that requests spread evenly across every publish node

Question 26

Which Cloud Manager report shows code quality and security findings for a pipeline build?

A. The Code Quality report, built from each pipeline's scans B. The Dispatcher access log, which is only generated in the production environment for each request C. The Adobe Experience Cloud audience report that summarizes visitor segments for the program D. The OSGi bundle list in the Felix console, which shows the state of each installed bundle

Question 27

Author heap usage rises steadily for several days after each deployment and never returns to baseline. What should you investigate first?

A. Normal behavior that clears on its own after the weekly Dispatcher restart runs on schedule B. A Dispatcher configuration that limits how much memory the author instance is allowed to use C. Too many development environments drawing from the same shared heap on the author instance D. A possible memory leak, investigated with heap dumps

Question 28

A production outage needs urgent help from Adobe Support. Which information is most important to include in the Admin Console support request?

A. A complete list of every user in the organization, together with their assigned roles and groups B. Program ID, environment ID, start time, and recent deployment details C. A request to increase the number of licenses for the team across all of the programs D. A screenshot of the Cloud Manager dashboard with no other context about the failing environment

Question 29

A company wants employees to sign in to AEM with corporate credentials and to sync groups from its identity provider. What should you configure in the Admin Console?

A. A separate Adobe ID for each employee, all sharing one password that is rotated every quarter B. An OAuth credential that replaces the identity provider entirely for all sign-in requests C. A Dispatcher rule that forwards every login request straight to the company LDAP server D. Federated SAML single sign-on, plus group sync to AEM product profiles

Question 30

Before users can be federated, the company's domain must be verified. What is the standard method?

A. Upload a copy of the company's SSL certificate chain through the Admin Console settings page B. Email a signed letter from the company's CIO to the Adobe Support team for manual review C. Create a user account whose username is the full domain name of the company's web site D. Add the DNS TXT record provided by the Admin Console to the domain's DNS zone

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