AEM DevOps Engineer Expert Mock Test 3 — 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

A custom servlet returns 404 only on the publish tier, while the same request works on author. The bundle is Active. What should you check first?

A. Whether the author instance uses the same port number as the publish instance in the farm B. Whether the publish Dispatcher filter allows the servlet's registered path C. Whether the bundle version number in the manifest header is lower than 1.0 for this release D. Whether the target page node in the repository uses the nt:file node type instead of cq:Page

Question 2

A file named com.example.Scheduler.cfg.json was added to the config folder, but the service still uses old values. What is the most likely cause?

A. The config folder's runmode is not active on the running instance B. OSGi configurations are cached for twenty-four hours before the framework rereads the file again C. The service is registered as a factory, so it ignores any single-file configuration on startup D. Configurations can only be changed through CRXDE Lite and not through a normal code deployment

Question 3

Which format correctly stores a multi-value property in an OSGi configuration file?

A. A JSON array in the .cfg.json file, such as a list of strings for the property B. A comma-separated string stored in a property with a plural name in the configuration file C. A nested object in the configuration whose keys are the numbers 0 and 1 for each value D. A Java properties file with the same key repeated on several lines in the same folder

Question 4

Replication from author to publish is queued but nothing is delivered, and the publish instance is reachable. Where should you look first?

A. The replication agent's queue status and its log on the author instance B. Only the publish instance's Dispatcher access log for the requests that were rejected C. The Git history of the project's pom.xml file, to see which commit changed the agent D. The package manager history in the author's Sling home folder, which lists installed packages

Question 5

A site needs /en to map to /content/site/en on the publish tier without changing the authored path. Which mechanism is appropriate?

A. A rewrite rule added to the author's replication agent so that the path is changed in transit B. A new JCR node type defined under the /apps folder with a mapping property on the type C. Sling mapping entries under /etc/map on the publish tier D. A Dispatcher renders mapping that rewrites the content path before the request reaches publish

Question 6

A team needs a feature disabled in production but enabled in stage. Which approach fits the Cloud Manager model?

A. A hard-coded host name check inside the bundle code that enables the feature for stage only B. Deleting the feature bundle from the stage pipeline definition, so it never reaches stage at all C. A separate Git branch that only production builds are allowed to deploy, using a special tag D. A production-scoped environment variable that the feature code reads

Question 7

A program needs a Stage environment for load testing, but only one Stage environment is allowed per program. Which action complies with this rule?

A. Create a second Stage environment from the Admin Console so that the test does not conflict B. Reuse the existing Stage environment and schedule deployments around tests C. Clone the Production environment into a Development environment that serves live traffic D. Ask Adobe to add a dedicated load-test tier to the program for the duration of the test

Question 8

Before moving a project from AEM 6.5 to AEM as a Cloud Service, which item must be removed or replaced because it is not supported in the cloud?

A. OSGi components that use the Sling Resource Resolver to read and write content in the repository B. Direct writes to the local file system, such as custom files under crx-quickstart C. Content packages that include a filter.xml file to define the paths they install into the repo D. Sling models annotated with the Model annotation so that they can be injected into components

Question 9

A team wants Cloud Manager to notify its service when a pipeline finishes. Which Adobe I/O feature should be configured?

A. A Dispatcher flush rule that posts the event payload to an external URL after each flush runs B. An Adobe I/O Events integration subscribed to the Cloud Manager event provider C. A replication agent that points at the external service and sends each event as a package D. A Sling event handler bundle installed on the author tier that polls the Cloud Manager API

Question 10

A quality assurance engineer needs to view pipeline logs but must not deploy. Which Cloud Manager role fits best?

A. The Quality Assurance role on the program B. The Program Manager role, which grants full deployment rights in every environment of the program C. The Developer role, which is required in order to read the logs for any pipeline execution D. The Business Practitioner role, which is allowed to edit the pipeline definition and its steps

Question 11

A production environment must not run debug logging, while the dev environment should. How should the logging configuration be scoped?

A. Runmode-specific config folders, such as config.dev, so logging applies only in dev B. Edit the logging configuration in production through CRXDE Lite after each deployment finishes C. Set the debug level in the Dispatcher httpd.conf file on the production publish servers D. Add a debug flag to the pom file so that the build chooses the log level for each environment

Question 12

A developer wants to find which deployments ran on a given Cloud Manager environment and their status history. Where should they look?

A. The branch list in the Git repository, where each branch records the environments it deployed to B. The credentials page in the Adobe I/O console, which records each deployment it has triggered C. The Dispatcher flush log on each publish node, which records every deployment that was run D. The Environments page in Cloud Manager, which lists deployment history

Question 13

Authors need a clear way to validate Dispatcher configuration changes before deployment. What is the recommended check?

A. Restart the author instance so that it picks up any changes made to the Apache configuration B. Run the Dispatcher SDK validator against the configuration in the pipeline or locally C. Install a content package with the Dispatcher filter disabled to confirm the content loads D. Review only the Git diff of the httpd.conf file and approve the change if it looks correct

Question 14

HTML responses for logged-in users are being cached and shared between different users. Which configuration issue is most likely?

A. The Dispatcher is running in dev mode, which disables all caching for every request path B. The publish instance sends a Vary header on every response, so every response is treated as personalized C. A cache rule that allows personalized paths without excluding session cookies or auth D. The replication agent transfers session cookies to the publish tier with each published page

Question 15

A penetration test shows that double-dot path segments can reach /libs through the public Dispatcher. Which control addresses this?

A. A cache rule on the /libs path that stores each response with a longer time to live B. A filter rule that denies /libs and normalizes request paths before filtering C. A higher statfile level for the content tree so that flushes reach the deeper folders D. A renders entry that forwards all /libs requests to the publish instance for processing

Question 16

After publishing, a new page returns 404 on the public site, but the page exists on author. The Dispatcher cached a 404 before publishing. What fixes it?

A. Restart the publish AEM instance so that the Dispatcher clears its entire cache on startup B. Flush the affected path so the Dispatcher removes the cached 404 response C. Delete the author page, recreate it with the same title, and publish it to the publish tier D. Disable the Dispatcher for the content path entirely until the next scheduled maintenance window

Question 17

In AEM as a Cloud Service, what does Cloud Manager deploy to each environment?

A. Source code, which is compiled separately on each environment at the time that it is deployed B. Individual JAR files that are uploaded by hand to each author node after the build finishes C. One immutable build artifact, deployed unchanged to each environment D. Snapshots of the environment's repository taken before the deployment and restored after it

Question 18

A multi-module project has a ui.apps module that must be built as an AEM content package. Which packaging type should its pom.xml declare?

A. bundle, which packages the module as an OSGi bundle for the runtime container to load B. war, which packages the module as a web application archive for a servlet container C. content-package D. jar, which packages the module's classes and resources into a standard Java archive file

Question 19

A build passes locally but fails in the Cloud Manager pipeline because a dependency exists only in the developer's local .m2 cache. What is the correct fix?

A. Copy the required jar file into the src/main/resources folder of the module that uses it B. Add the skip tests flag to the pipeline's Maven goal so that the dependency check is skipped C. Point maven.repo.local at a folder on the developer's laptop so that the cache is shared D. Declare it in the pom so it resolves from repositories the pipeline can reach

Question 20

Three AEM 6.5 publish instances need a config package installed before a content package, because the content depends on the config. How should the CI job handle it?

A. Merge both packages into one zip file without any dependency information in its metadata B. Install the content package on one instance and let replication copy the config to the rest C. Install the config package on each instance first, then the content package D. Rename the config package so that its name sorts first in the Package Manager list view

Question 21

A release branch pipeline must produce reproducible builds. Which dependency practice is recommended?

A. Use released, fixed versions of dependencies rather than SNAPSHOT versions B. Use SNAPSHOT versions only on Development environments so that the release pipeline is fast C. Use the latest version resolved at build time for every dependency in the release pipeline D. Use Maven version ranges so that the build automatically picks up the newest compatible fixes

Question 22

A ui.frontend build should place its compiled output where the ui.apps package will include it. Which change achieves this?

A. Copy the generated files into the jcr_root folder manually before each commit to the branch B. Add the node_modules folder to the content package filter so that its contents are included C. Configure the frontend build output path to the ui.apps module's jcr_root folder D. Place the output in the ui.content module, which is not packaged into the release artifact

Question 23

A Maven build uses a settings.xml file with credentials in a developer's home folder, and the pipeline cannot access them. What is the correct approach?

A. Commit the credentials into the project's settings.xml file in Git so that every build can read them B. Add a skip authentication flag to the Maven goal so the build does not require the credentials C. Copy the developer's entire .m2 folder into the repository root so the pipeline can use it D. Store them as Cloud Manager secret variables used by the pipeline

Question 24

Which metric is the best indicator that a publish tier needs more capacity during a sale?

A. The number of authors who logged in to the author instance at any point during the business day B. The total size of the Git repository, including its full history of commits and branches C. Sustained high CPU and rising response time on publish under peak request load D. The count of content packages that were installed on the author tier over the previous week

Question 25

A release manager wants trend data on pipeline durations over several months. Where can this data be obtained?

A. The OSGi bundle list in the Felix console, which shows each bundle and its current state B. The Dispatcher access log on the author instance, which records every request it handles C. The Git blame view of the pom.xml file, which shows the author of each line in the file D. The Cloud Manager pipeline execution history, exported through the Cloud Manager API

Question 26

A nightly batch job spikes author CPU and slows editing during working hours. Which approach reduces the contention?

A. Run the batch on every publish instance at the same time so that the work finishes sooner B. Disable the Dispatcher cache on the author instance during the batch so that it is faster C. Add more replication agents on the author instance to spread the batch work across agents D. Schedule the batch off-hours and throttle it with workflow limits

Question 27

Which logging setup helps identify slow JCR queries in AEM?

A. Slow query logging configured for the Oak query engine B. The Dispatcher error log, which records the requests that failed on each publish node C. The Cloud Manager dashboard summary, which shows the overall health of each environment D. The Admin Console audit log, which records the sign-in and role changes for each user

Question 28

Your team needs Adobe Support to review a Cloud Manager issue. Which channel should be used to file the request, scoped to the program?

A. The Admin Console support request form, with the product and program selected B. An email to the Adobe Developer Console sales team that describes the issue in detail C. A public issue opened in the open-source AEM project repository on GitHub for the team D. A ticket in the company's internal issue board that Adobe engineers cannot access directly

Question 29

After SAML is configured, users can sign in but lose AEM access because their groups are not synced. What should you check?

A. The Dispatcher cache lifetime configured for the login page, which may hold stale content B. Whether the Adobe ID password was changed in the last thirty days by the account owner C. The version of the AEM core components bundle deployed on the author and publish tiers D. The user group mapping between identity provider groups and AEM product profiles

Question 30

Which tool syncs users and groups from an enterprise directory into the Adobe Admin Console?

A. The AEM Package Manager with a users.zip file that is uploaded to each instance manually B. The User Sync tool, which uses directory connectors such as LDAP or Azure AD C. A Dispatcher filter that forwards user lookup requests to the enterprise directory service D. The Cloud Manager environment variable editor, which stores user records for each program

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