Pass the Cisco AppDynamics Certified Associate 500-425 Questions and answers with ValidTests

The option that would solve this the fastest for the customer is to include baseline data within widgets on the dashboard. Baseline data is the data that represents the normal or expected behaviorof a metric, based on the historical data collected by the AppDynamics Cognition Engine. By including baseline data within widgets on the dashboard, the customer can easily compare the current value of the metric with the past average value for the same time. For example, if the customer wants to see the number of current database connections on their application in a Timeseries graph, and compare it to the past averages for the same time, they can create a Timeseries graph widget that shows the metric “Database Connections” and enable the option “Show Baseline Data” in the widget settings. This will display the current and the baseline values of the metric in the same graph, and allow the customer to see the trends and deviations over time1.

According to the Java Memory Leaks document1, one of the ways to detect and troubleshoot Java memory leaks is to use the Automatic Leak Detection feature on the Memory tab of the Node Dashboard. This feature captures and analyzes the collections that are actively used and growing in size over time, indicating a potential memory leak. You can also drill down into the leaking collections to see the content summary and the access traces that show the code path and the business transactions that access the collection. Therefore, the correct answer is D. Examining the values on the Server tab, configuring Object Instance Tracking, or verifying and adjusting the Memory Monitoring configuration may not directly reveal the source of the memory leak, but they may provide some useful information or metrics to support the diagnosis. References:

Java Memory Leaks

According to the Install the Standalone Machine Agent document1, the machine agent is a standalone Java program that collects performance statistics about your environment. It can be deployed on any machine that hosts application servers, database servers, messaging servers, Web servers, etc. However, the machine agent does not start collecting metrics as soon as it is installed. You need to start the machine agent manually or configure it to run as a service or a daemon. Therefore, the correct answer is D. The machine agent does not require an app agent to collect metrics, nor does it run with the monitored application. These are false statements. References:

Install the Standalone Machine Agent

Percentile metrics are a way to measure the distribution of response times for a Business Transaction. They show the value below which a certain percentage of measurements fall. For example, the 50th percentile metric shows the median response time, and the 99th percentile metric shows the worst-case response time for 99% of the transactions. To enable percentile metrics, you need to go to Configuration > Slow Transaction Thresholds and indicate 5 whole numbers between 1 and 99 as Percentiles to Collect. You can then view the percentile metrics in the Metric Browser under Business Transaction Performance > Business Transactions > > > Percentiles.

<a href="https://docs.appdynamics.com/display/PRO45X/Percentile+Metrics">https://docs.appdynamics.com/display/PRO45X/Percentile+Metrics

The App Server agent configuration GUI allows you to set the configuration for the following agent properties:

Node-name: This property defines the name of the node that appears in the Controller UI. You can use the GUI to change the node name or use auto-naming rules based on environment variables or system properties1

Max-business-transactions per node: This property sets the maximum number of business transactions that can be registered on a node. If the number of business transactions exceeds this limit, the agent stops registering new business transactions and reports them as “All Other Traffic”. You can use the GUI to increase or decrease this limit2

References: 1: Node Naming 2: Configure Business Transaction Limits

Remote Services metrics are the metrics that show the performance and behavior of the external systems that an application interacts with, such as web services, databases, message queues, etc. An AppDynamics administrator can use two locations to view Remote Services metrics: the Tier Dashboard and the Exit Point Metrics. The Tier Dashboard shows the flow map of a tier and its downstream dependencies, including the remote services that the tier calls. The administrator can click on any remote service node on the flow map to see the metrics such as average response time, calls per minute, errors per minute, etc. The Exit Point Metrics show the metrics for all the exit points (remote service calls) of an application, grouped by type, such as HTTP, JDBC, JMS, etc. The administrator can drill down to see the metrics for each exit point, such as the backend name, the tier name, the business transaction name, etc.

One possible reason why Java APM agents used in a production environment are consistently found to be disabled while no development environments exhibit this behavior is that the production agents are running out of heap memory and crashing. This can happen if the production agents are monitoring a high volume of business transactions, metrics, or snapshots, and the default heap size is not sufficient to handle the load. To resolve this issue, you can enable the heap-storage-monitor-enabled setting on the agent, which allows the agent to monitor its own heap usage and automatically reduce the amount of data it collects when the heap usage reaches a certain threshold. This can help to prevent the agent from running out of memory and crashing. You can also adjust the heap-storage-monitor-threshold setting to specify the percentage of heap usage that triggers the data reduction1. Alternatively, you can also increase the heap space for the agent by using the -Xmx option in the agent startup script, but this may require more resources from the host machine2.

The other options are not valid solutions to resolve this issue. Enabling agent auto-restart in the controller UI will not prevent the agent from crashing due to heap exhaustion, but only restart the agent after it crashes. This may cause data loss and performance degradation3. Decreasing the worker thread count will not affect the heap usage of the agent, but only limit the number of concurrent tasks that the agent can execute. This may reduce the agent throughput and responsiveness.

https://docs.appdynamics.com/display/PRMY22/Java+Agent

https://docs.appdynamics.com/appd/23.x/latest/en/application-security-monitoring/cisco-secure-application-requirements

An HTTP Data Collector is a type of data collector that captures data from HTTP requests and responses. It can capture three kinds of data: parameter values, headers, and cookies. Parameter values are the values of the query string or form parameters in the HTTP request. Headers are the key-value pairs that are sent or received as part of the HTTP request or response. Cookies are the small pieces of data that are stored by the browser and sent to the server with each request. An HTTP Data Collector can be configured to capture any of these data types by specifying the name of the parameter, header, or cookie in the data collector settings. The captured data can be used for various purposes, such as adding context to business transactions, creating custom metrics, or triggering health rules.

https://community.appdynamics.com/t5/NET-Agent-Installation/HTTP-Data-Collector-How-to-know-the-HTTP-Params-name/td-p/24186

One possible reason why the host does not appear in the Tiers and Nodes view and there are no metrics in the Metric Browser is that the license count for that agent type has been exceeded. You can check the license usage and availability by going to Settings > License in the Controller UI. If the license count is exceeded, you can either purchase more licenses or deactivate some agents to free up the license slots12 References: 1: License Rules and Restrictions 2: Manage Licenses

Business Transaction metrics are the key performance indicators that measure the health and performance of your applications. They include metrics such as average response time, calls per minute, errors per minute, and so on. You can use various types of performance degradation analysis to identify and troubleshoot the root causes of performance issues using Business Transaction metrics.

According to the Troubleshoot Business Transactions - AppDynamics, the following types of performance degradation analysis are used with Business Transaction metrics:

Correlation Analysis: This type of analysis helps you to find the correlation between different metrics and events that may affect the performance of your Business Transactions. For example, you can use the correlation analysis to see how the response time of a Business Transaction is related to the CPU utilization of a node, or how the error rate of a Business Transaction is related to the number of slow database calls.

Remote Services Analysis: This type of analysis helps you to understand how the performance of your Business Transactions is impacted by the calls to remote services, such as databases, web services, message queues, and so on. For example, you can use the remote services analysis to see the response time, call count, error count, and wait time of each remote service call, and drill down to the details of each call.

Compare Releases: This type of analysis helps you to compare the performance of your Business Transactions across different releases of your application. For example, you can use the compare releases analysis to see how the response time, error rate, and throughput of your Business Transactions have changed after a new deployment, and identify any performance regressions or improvements.

Therefore, A (Correlation Analysis), B (Remote Services Analysis), and E (Compare Releases) are three types of performance degradation analysis that are used with Business Transaction metrics. References:

Troubleshoot Business Transactions - AppDynamics

Business Transaction - AppDynamics

Cisco AppDynamics Associate Performance Analyst Certification