A team uses file_sd_configs to manage scrape targets. They have a file 'targets.json' that lists all targets. They update the file to add a new target. What must they do for Prometheus to pick up the change?

Send a SIGHUP signal to the Prometheus process to reload the file.

Run 'promtool check config' to validate and reload the file.

Nothing; Prometheus automatically watches the file and reloads targets when it changes.

Restart the Prometheus server to reload the configuration.

In Prometheus's data model, what uniquely identifies a time series?

The combination of metric name and label set

When is it appropriate to use the Pushgateway in a Prometheus monitoring setup?

For aggregating metrics from multiple instances of a service

For short-lived jobs that complete before Prometheus can scrape them

For storing metrics for long-term retention

For long-running services that expose metrics via HTTP

A team is monitoring a Linux server. They want to collect CPU, memory, disk, and network metrics. They have installed node_exporter on the server. What is the next step to make these metrics available in Prometheus?

Enable the 'node' metrics in the Prometheus configuration file.

Install the Prometheus server on the same machine as node_exporter.

Add a scrape job in prometheus.yml that targets the node_exporter's port (default 9100).

Configure node_exporter to push metrics to Prometheus.

LPI DevOps Tools Engineer

Domain 4Objective 2

704.2 Prometheus Monitoring (weight: 6) DEVOPS-TOOLS-ENGINEER Practice Questions (Page 5)

Part of the 704 Security and Observability domain, which makes up ~26% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~9–16 in this domain), expect 2–4 from this objective — we provide 38 practice questions to prepare you well beyond it. (estimate)

38questions here

8free pages

13concepts

13 Concepts in This Objective

Prometheus architecture and components
Metrics collection and exposition formats
PromQL queries and data selection
PromQL aggregation and rate calculations
Prometheus configuration for targets and scraping
Service discovery and dynamic target management
Alerting rules and Alertmanager integration
Recording rules and rule evaluation
Prometheus data model and storage
Exporters and instrumentation
Pushgateway for short-lived jobs
Prometheus federation and high availability
Troubleshooting and debugging Prometheus

Questions 21–25

21application · easy
A team uses file_sd_configs to manage scrape targets. They have a file 'targets.json' that lists all targets. They update the file to add a new target. What must they do for Prometheus to pick up the change?
Select an answer first
22foundation · easy
In Prometheus's data model, what uniquely identifies a time series?
Select an answer first
23foundation · easy
When is it appropriate to use the Pushgateway in a Prometheus monitoring setup?
Select an answer first
24application · medium
A team is monitoring a Linux server. They want to collect CPU, memory, disk, and network metrics. They have installed node_exporter on the server. What is the next step to make these metrics available in Prometheus?
Select an answer first
25foundation · easy
Which PromQL aggregation operator would you use to find the maximum value of a metric across all instances?
Select an answer first

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