Instrumentation And Exporters

Which TWO of the following are true about the node_exporter?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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?

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

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

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

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

Which TWO of the following are true regarding Prometheus Histograms?

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

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

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

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?

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

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

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

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

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

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 common issues that cause scraping failures?

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?

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

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

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

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

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

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

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

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

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

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

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

What is the default port used by node_exporter?

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

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

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?