1. What is the main purpose of a Grafana dashboard?
A. To store raw log files permanently
B. To visualize and monitor data from different data sources
C. To replace Linux operating system tools
D. To install monitoring agents automatically
Answer: B. To visualize and monitor data from different data sources
2. In Grafana, which menu is commonly used to create or view dashboards?
A. Alerting
B. Connections
C. Dashboards
D. Administration
Answer: C. Dashboards
3. What is a Grafana panel?
A. A Linux service
B. A single visualization inside a dashboard
C. A database table
D. A user permission group
Answer: B. A single visualization inside a dashboard
4. Which visualization type is best for showing CPU usage over time?
A. Time series
B. Text
C. Table only
D. Playlist
Answer: A. Time series
5. Which visualization type is useful for showing a single current value such as “Memory Used %”?
A. Stat
B. Logs
C. Trace view
D. User list
Answer: A. Stat
6. In Grafana, what is a data source?
A. A place where Grafana gets monitoring data from
B. A dashboard folder
C. A user account
D. A browser plugin
Answer: A. A place where Grafana gets monitoring data from
7. Which Grafana menu is used to add a new data source such as Graphite, Prometheus, or CloudWatch?
A. Dashboards
B. Connections
C. Bookmarks
D. Starred
Answer: B. Connections
8. If Grafana is connected to Graphite, what does Grafana usually do?
A. Collects Linux metrics directly
B. Reads metrics from Graphite and displays them in panels
C. Deletes old Whisper files
D. Installs Telegraf automatically
Answer: B. Reads metrics from Graphite and displays them in panels
9. Which option should be used in Grafana to test a metric query before adding it to a dashboard?
A. Explore
B. Playlists
C. Users and access
D. Authentication
Answer: A. Explore
10. In a Graphite-backed Grafana dashboard, which query format is correct?
A. telegraf.linux-demo.cpu.usage_active
B. telegraf/linux-demo/cpu/usage_active.wsp
C. /opt/graphite/storage/whisper/cpu.wsp
D. servers.cpu.usage_active.wsp
Answer: A. telegraf.linux-demo.cpu.usage_active
11. Why should .wsp not be used in Grafana Graphite queries?
A. Because .wsp is only the Whisper storage file extension
B. Because Grafana does not support CPU metrics
C. Because .wsp is used only for logs
D. Because Graphite does not store data
Answer: A. Because .wsp is only the Whisper storage file extension
12. What are thresholds used for in Grafana panels?
A. To change user passwords
B. To color values based on warning or critical limits
C. To restart Grafana
D. To install plugins
Answer: B. To color values based on warning or critical limits
13. Which Grafana feature is used to notify users when a metric crosses a defined condition?
A. Alerting
B. Snapshot
C. Playlist
D. Theme settings
Answer: A. Alerting
14. Which condition is a valid example of a Grafana alert rule?
A. CPU usage is above 90% for 5 minutes
B. Dashboard title is too long
C. User logs in successfully
D. Browser tab is closed
Answer: A. CPU usage is above 90% for 5 minutes
15. What is the purpose of organizing dashboards into folders in Grafana?
A. To delete old metrics
B. To group related dashboards and manage access more easily
C. To increase CPU usage
D. To convert Graphite metrics into logs
Answer: B. To group related dashboards and manage access more easily