500-425 Practice Questions
Prepare for 500-425 with more than an answer.
- Exam fee
- $300 USD
- Level
- Associate
- Valid for
- 3 years
Domains covered on the exam 6
- Agents15%
- Dashboards15%
- Data Collectors20%
- Alerts and Responses15%
- Errors and Exceptions25%
- System Access and Security10%
- 1
A policy has been configured to trigger a 'Run a script' action when a health rule is violated. The action is configured to execute a shell script located at
/opt/appd/scripts/restart_service.shon the machine where the event occurred. After a health rule violation, the administrator confirms the policy fired but the script did not execute. The Machine Agent is running as the userappd_user. What are the two most likely reasons for this failure? (Select TWO)Show answer details
Correct answer: A, C
This is a very common cause. The Machine Agent executes the script under the context of its own user (
appd_user). If that user does not have execute (+x) permissions on the script file, the operating system will prevent it from running.For security reasons, the ability for the Machine Agent to execute arbitrary scripts is disabled by default. An administrator must explicitly enable this feature by setting the
run-script-action-enabledflag totruein the agent's configuration file and restarting the agent. - 2
What is the primary difference between a 'Service Endpoint' and a 'Business Transaction' in AppDynamics?
Show answer details
Correct answer: A
This is the correct definition. A Business Transaction (BT) follows a request from its entry point through all distributed tiers. A Service Endpoint (SEP) provides visibility into the performance of a specific piece of code (like a critical method) that might be called by many different BTs, allowing you to monitor its performance in isolation.
- 3
A DevOps engineer wants to capture the User ID from an HTTP Cookie in all transaction snapshots for the
/user/profilebusiness transaction to help with debugging. For security reasons, this data should not be visible for any other business transaction. What is the most efficient way to achieve this?Show answer details
Correct answer: A
This is the correct approach. Data Collector configuration allows for precise scoping. By creating the HTTP Data Collector and then explicitly applying it only to the specific '/user/profile' BT, the administrator ensures the data is captured where needed while maintaining security and isolation from other transactions.
- 4
Case Study
An online learning platform, EduSphere, uses AppDynamics to monitor its application. The platform has a critical 'User' database running on an Oracle server. The AppDynamics administrator has deployed a Database Agent to monitor this server. Recently, users have reported slow performance during peak hours.
The administrator observes frequent 'DB Lock' health rule violations in AppDynamics. When they investigate the Database Visibility dashboard for the corresponding time, they see the following:
- High number of 'Sessions Waiting'
- The top wait state is
enq: TX - row lock contention - Several long-running
UPDATEstatements are identified in the 'Top Queries' list, all targeting theUSER_COURSEStable.
The database administrator (DBA) confirms that the
USER_COURSEStable has proper indexing. However, they suspect that multiple application threads are trying to update the same rows in the table simultaneously, causing locking issues.Which AppDynamics feature would be most valuable for the administrator to use next to help the development team identify the exact application code that is initiating these conflicting
UPDATEstatements?Show answer details
Correct answer: A
This is the most direct and powerful feature for this scenario. Database Visibility can correlate database sessions back to the originating Application Agent and Business Transaction. By finding the long-running
UPDATEstatement in the Database Visibility UI and selecting the option to correlate it, the administrator can pivot directly to the specific transaction snapshots from the application tier that executed that query. This provides the developers with the exact code path and context needed for debugging. - 5
An administrator is creating a new role for a team of junior performance analysts. The team needs to be able to view dashboards and analyze transaction snapshots for the 'E-Commerce' application but must be prevented from making any configuration changes, such as modifying health rules or business transaction definitions. The following diagram illustrates the goal:
graph TD subgraph Role_Permissions ["Junior Analyst Role"] A[View Application Dashboard] --> B{Can See Data?} C[View Snapshots] --> B D[Configure Health Rules] --> E{Cannot Change Config!} F[Configure Business Transactions] --> E end subgraph User_Needs ["Team Requirements"] Need1[View Performance Data] Need2[Analyze Slow Requests] Constraint1[No Configuration Changes] end Need1 --> A Need2 --> C Constraint1 -.-> D Constraint1 -.-> F
Given the requirements, which permission is incorrectly assigned or missing to adhere to the principle of least privilege while still allowing the team to perform its duties?Show answer details
Correct answer: C
In AppDynamics' permission model, the ability to 'View Snapshots' is dependent on the ability to 'View Business Transactions'. An analyst cannot access snapshots without first being able to see and select the business transaction they belong to. Therefore, to make the 'View Snapshots' permission functional, the 'View Business Transactions' permission must also be granted. This does not violate the 'no configuration changes' constraint as it is a read-only permission.
- 6
A financial services company is using AppDynamics to monitor a critical trading application. The DevOps team needs to upgrade the Java agents on a fleet of 100 servers during a very short maintenance window. They are currently on version 22.1.0 and need to upgrade to 23.5.0. A key requirement is the ability to quickly roll back to the previous version if any issues are detected post-upgrade. Which agent upgrade strategy best meets these requirements?
Show answer details
Correct answer: B
Using a symbolic link is the industry-standard best practice for this scenario. It allows the new agent version to be staged in advance. The actual upgrade only involves changing the symlink's target and restarting the application, which is very fast. Critically, rolling back is as simple as repointing the symlink to the old version's directory and restarting again, meeting the key requirement.
- 7
An administrator is troubleshooting an issue where a newly deployed Java agent is not reporting to the SaaS Controller. The application server is in a secured network segment. The following diagram illustrates the network path:
[App Server] -> [Corporate Firewall] -> [Internet] -> [AppDynamics SaaS Controller] (10.10.1.5) (Port 80/443 Outbound Allowed) (customer.saas.appdynamics.com)The
controller-info.xmlfile is configured correctly with the account name, access key, and controller host. The agent log file contains repeated entries of "Could not connect to Controller". What is the most likely cause of this issue?Show answer details
Correct answer: C
All AppDynamics SaaS Controllers require SSL (HTTPS) for communication. The firewall allows outbound traffic on port 443 (HTTPS), but if the agent is configured with
controller-ssl-enabledset to 'false', it will attempt to connect on the non-SSL port (typically 8090 for SaaS, or 80 if not specified), which would be blocked or rejected. This is the most common configuration error in such scenarios. - 8
A new AppDynamics administrator is trying to understand the data flow for Database Visibility. They have deployed a Database Agent on a dedicated monitoring server. Which of the following statements is true regarding the communication path for database metrics?
Show answer details
Correct answer: A
This statement is true. The Database Agent connects directly to the monitored database instance to collect metrics. It then forwards this data directly to the AppDynamics Controller. The Application Agent is not involved in this data path.
- 9
An SRE is configuring health rules for a critical business transaction,
/api/checkout. To improve signal-to-noise ratio, they want to create a health rule that triggers only if the transaction experiences both a high error rate AND a high average response time simultaneously. Which combination of Health Rule settings achieves this goal?Show answer details
Correct answer: D
This is the correct approach. A single health rule can have multiple conditions. By setting the condition combination to 'AND', the health rule will only enter a 'Critical' or 'Warning' state if all defined conditions are met within the same evaluation timeframe, fulfilling the requirement.
- 10
A development team is using a third-party library that logs a specific, benign
java.io.IOExceptionwith the message "Connection reset by peer". This is flooding the error dashboard and causing alert fatigue. The administrator needs to prevent these specific exceptions from being reported as errors, but only for the 'InventoryService' tier. All otherjava.io.IOExceptions in that tier and all exceptions in other tiers must still be reported. What is the most precise way to configure this?Show answer details
Correct answer: B
This is the correct and most precise method. AppDynamics allows for tier-specific error configurations. By creating a configuration for the 'InventoryService' tier, the administrator can add an ignore rule that matches on both the exception class and the specific message content. This ensures only the targeted benign exceptions are ignored, and only within the specified tier.
