Instrumentation And Exporters

Your application has a short-lived batch job that finishes before the Prometheus server can scrape it. What architectural component should be used?

You need to track the number of requests received by your application. Which metric type should you choose?

Which action should be avoided when creating labels for custom metrics?

When implementing a custom exporter, what format must the output follow to be correctly scraped by Prometheus?

You are using the blackbox_exporter to monitor an HTTP endpoint. Which module configuration is required to check the HTTP status code?

A developer wants to expose a metric that represents the current memory usage of a process. Which type is most appropriate?

You need to monitor the duration of database queries. Which metric type is best for calculating quantiles on the server side?

You are monitoring a Linux server and need to track CPU usage. Which exporter is the standard choice for exposing hardware and OS metrics?

What is the default port used by node_exporter?

When running node_exporter, how can you disable specific collectors like 'textfile'?

You are instrumenting a Go application. What is the standard way to register a metric?

A Histogram has buckets [0.1, 0.5, 1, 5]. A request takes 0.7 seconds. Which buckets will be incremented?

What is the effect of using a 'Summary' metric with client-side quantiles?

You want to monitor the status of a specific SSL certificate via blackbox_exporter. Which module is designed for this?

When writing a custom exporter in Python, what is the most common way to expose the metrics?

You need to expose metrics from a legacy application that only logs to a file. What should you do?

What is the purpose of the 'le' label in a Histogram?

When creating a custom exporter, which component is responsible for scraping the data?

When using the Pushgateway, what happens if you push a metric with the same name and labels as an existing one?

What is the impact of naming a metric starting with an underscore?

When using the Prometheus Go client, what is the difference between a Gauge and a GaugeVec?

You notice your custom exporter is timing out during scraping. What is the most likely cause?

Which of the following is a correct unit suffix for Prometheus metrics?

What is the primary function of the 'blackbox_exporter' in a monitoring architecture?

What is the purpose of the 'instance' label in Prometheus?

When configuring a custom exporter, how do you provide labels to a metric?

You are seeing 'NaN' values in your gauge metrics. What does this indicate?

Which metric type is most appropriate for tracking the current total number of active user sessions?

If you are using a Histogram, what is the purpose of the '_sum' metric?

What is the recommended approach for metrics that only need to be exposed periodically?

Which THREE of the following are valid metric types in Prometheus?

What does the `_count` suffix denote in a summary or histogram?

Why are metric names required to follow a specific character set (e.g., alphanumeric and colons)?

Which tool would you use to monitor the availability of a website from various geographic locations?

When instrumenting an application, why is it recommended to use a fixed set of label names?

Which TWO of the following are common reasons to use the Pushgateway?

Which TWO of the following are true about the node_exporter?

Which TWO of the following are true regarding Prometheus Histograms?

Which TWO of the following are true about the Blackbox exporter?

Which THREE components are typically involved in the standard Prometheus instrumentation and scraping process?

Which THREE of the following are standard ways to handle Prometheus metrics?

Which THREE of the following are key design considerations when creating a custom exporter?

Which THREE of the following are true about the Prometheus Text Exposition Format?

Which TWO of the following are true about the Gauge metric type?

Which THREE of the following are common issues that cause scraping failures?

Which TWO of the following should be considered when defining metric names?

Which THREE of the following are valid approaches to instrumenting an application?

You are monitoring server hardware metrics using node_exporter. You observe that the metrics are not showing up in Prometheus. Which initial troubleshooting step is most effective?

A developer wants to track the total number of requests received by a web service. Which metric type is most appropriate for this requirement?

You are implementing a custom exporter for a legacy database. The database provides a single value representing the number of active connections. Which metric type should you use to best represent this data?

You need to monitor the availability of a specific web endpoint from external locations using blackbox_exporter. What is the primary purpose of the 'module' configuration in blackbox_exporter?

You have a histogram metric tracking request durations. You need to calculate the 99th percentile across all instances in a cluster. Why is this difficult with standard Prometheus metrics?

You are troubleshooting high cardinality in your metrics. What is a common cause for this in a custom exporter?

When using a Prometheus client library to instrument a Go application, which function call is typically used to register a new metric?

Which THREE of the following are valid metric types supported natively by Prometheus client libraries?

Which THREE of the following are common use cases for the node_exporter?

Which TWO factors directly influence the accuracy of quantile calculations when using Prometheus Summary metrics?