Monitoring and Analysis Mastery

What is the primary purpose of Grafana?

• To perform data backups.

• To store and manage databases.

• To visualize and analyze data through dashboards.

• To create web applications.

Which of the following is a valid Prometheus query?

• query_result

• up

• metrics

• status

In Splunk, what command is used to filter results?

• analyze

• filter

• extract

• search

What is the first step in Root Cause Analysis (RCA)?

• Gather data from stakeholders.

• Implement corrective actions.

• Identify potential solutions.

• Define the problem clearly.

Which tool is commonly used for detecting memory leaks in Java?

• Java VisualVM

• YourKit Java Profiler

• JProfiler

• Eclipse Memory Analyzer (MAT)

What is a best practice for monitoring application performance?

• Rely solely on historical data

• Limit monitoring to once a month

• Ignore user feedback on performance

• Use real-time monitoring tools to track key performance indicators.

How can Grafana be integrated with Prometheus in a Spring Boot application?

• 1. Add Micrometer dependencies to your Spring Boot application. 2. Configure application properties to expose metrics. 3. Set up Prometheus to scrape the metrics endpoint. 4. Add Prometheus as a data source in Grafana. 5. Create dashboards in Grafana to visualize the metrics.

• Deploy a separate instance of Spring Boot for metrics collection.

• Integrate Grafana with MySQL for data visualization.

• Use JMX to monitor application performance.

What is the significance of the 'heap dump' in Java debugging?

• Heap dumps are used to improve application performance by optimizing CPU usage.

• Heap dumps are primarily for logging application errors without memory analysis.

• Heap dumps are only useful for analyzing disk space usage in Java applications.

• Heap dumps are significant in Java debugging as they help diagnose memory-related issues by providing a detailed view of the application's memory usage.

Which method can help identify memory leaks in a Java project?

• Use garbage collection to automatically free memory.

• Run the application in a single-threaded mode.

• Increase the heap size to prevent memory issues.

• Use profiling tools like VisualVM or Eclipse Memory Analyzer (MAT) to identify memory leaks.

What visualization types can be created in Grafana dashboards?

• 3D visualizations

• Bar charts

• Graphs, tables, heatmaps, histograms, pie charts, single stat panels.

• Line graphs