What is the primary data model used by Prometheus?

Time-series data identified by metric names

Relational tables using structured schemas

Unstructured logs stored in a distributed file system

Document-oriented JSON blobs with nested objects

What does it mean that Prometheus is a "Pull-based" system?

Prometheus initiates HTTP requests to scrape metrics

Targets must broadcast UDP packets to the server

Agents must upload periodic batches via an API

The kernel pushes telemetry directly to the disk

What is a Prometheus "Exporter"?

A proxy that translates service metrics into Prometheus format

A backup tool for migrating data to S3 buckets

A visualization plugin used for exporting Grafana PDFs

A load balancer that distributes scrapers across nodes

The functional query language used to process metrics

A configuration syntax for setting up alert routes

A protocol for streaming metrics over gRPC channels

A specialized markup language for designing dashboards

What is the "Node Exporter" used for?

Collecting hardware-level metrics from the host OS

Monitoring Node.js runtime and heap performance

Deploying Kubernetes nodes via infrastructure scripts

Verifying network connectivity between cluster nodes

What is a "Gauge" metric used for?

Measuring a value that can increase or decrease over time

Tracking the cumulative sum of successful operations

Calculating the distribution of latency across requests

Storing static metadata such as software version numbers

In Grafana, what is a "Data Source"?

The underlying database that stores the observability data

The CSS file that defines the dashboard visual theme

The raw CSV file uploaded manually by the developer

The internet gateway used to fetch external API metrics

What is the purpose of the "Alertmanager"?

Routing, grouping, and deduplicating alert notifications

Generating the initial alert signals based on thresholds

Storing a historical record of all past alert failures

Automatically restarting services that trigger critical alerts

What does the PromQL query "rate(http_requests_total[5m])" calculate?

The average per-second growth rate over a 5-minute window

The absolute increase in requests over the last 5 minutes

The percentage of requests that returned a 200 OK status

The maximum latency observed for a request in that period

In Grafana, what is a "Variable" (Dashboard Variable)?

A dynamic placeholder used to filter data across panels

A hardcoded constant used in individual panel titles

A temporary storage buffer for large query results

The mathematical coefficient used for unit conversion

What is "Cardinality" in Prometheus?

The total number of unique time-series in the system

The number of scrape targets configured in the YAML file

The frequency at which the TSDB flushes data to the disk

The latency involved in executing complex PromQL queries

What does the "Job" label usually represent in Prometheus?

A group of targets serving the same technical purpose

A specific Kubernetes pod identifier within a namespace

A background process that cleans up the Prometheus database

The individual developer responsible for the application code

What is the "Scrape Interval"?

The frequency at which Prometheus collects data from targets

The time allowed for a single target to return its metrics

The amount of time metrics are kept before being deleted

The delay between an alert firing and the notification sent

What is the purpose of "Labels" in Prometheus?

To enable multi-dimensional filtering and data aggregation

To provide a unique name for the entire Prometheus cluster

To encrypt sensitive metric data before it is stored on disk

To automatically generate CSS classes for Grafana dashboards

What is "Prometheus Federation"?

A method for scaling by having one server scrape another

A protocol for balancing traffic between multiple Grafana UI nodes

The process of merging multiple metric names into a single series

A security standard for authenticating across different cloud providers

What is a "Histogram" in Prometheus?

A metric that tracks the distribution of values across buckets

A visual timeline of all dashboard configuration changes

A specialized chart that shows data from previous years only

A tool for measuring the physical temperature of server CPUs

In Grafana, what does a "Panel" represent?

A single visualization block (graph, gauge, or table)

A logical group of dashboards within a specific folder

The side navigation menu used to switch between data sources

A collaborative chat room for discussing observability alerts

What is the "Pushgateway" used for?

Allowing short-lived batch jobs to expose metrics to Prometheus

Speeding up the scraping process for high-latency networks

Serving as a firewall between the internet and the cluster

Providing a UI for manually entering metric values

What is "Alert Grouping" in Alertmanager?

Consolidating multiple related alerts into a single notification

Assigning multiple developers to investigate a single failure

Sorting alerts by their timestamp in the Grafana alert view

Restricting alert visibility to specific user roles only

What is "Silence" in Alertmanager?

A mechanism to mute notifications for a defined period of time

A feature to stop Prometheus from scraping a specific target

A global setting that disables all alerting across the cluster

An error state where Prometheus fails to reach the Alertmanager

What is a "Service Discovery" in Prometheus?

The automated identification of new scrape targets via APIs

A lookup tool for finding the documentation of a specific metric

A protocol for advertising Prometheus dashboards to the internet

A way to identify which developer last modified a dashboard

What does the "sum" operator do in PromQL?

Aggregates multiple time-series into a single total value

Calculates the average value over a specified duration

Finds the maximum value across all existing dimensions

Counts the number of unique labels present in the results

What is "Retention Time" in Prometheus?

The duration for which Prometheus stores metrics before deletion

The time required for a query to return a result from the disk

The delay between a data point being scraped and appearing in UI

The period an alert must stay active before it is considered resolved

What is "Grafana Loki"?

A log aggregation system that uses Prometheus-style labels

A dedicated database for storing distributed trace spans

A high-availability plugin for mirroring Grafana dashboards

A security tool for scanning metrics for malicious patterns

What is "Prometheus Recording Rules"?

A method to pre-calculate and save complex queries as metrics

A way to capture screen recordings of dashboard performance

A set of rules that define how data is encrypted on the disk

A mandatory policy for how developers must name their labels

In Grafana, what is "Provisioning"?

Using configuration files to define dashboards and sources

Allocating CPU and RAM resources for the Grafana pod

The process of purchasing a commercial license for Grafana Enterprise

Setting up the SMTP server for sending alert emails

What is "Blackbox Exporter"?

A probe that monitors endpoints via HTTP, DNS, or ICMP

An agent that collects internal system logs and kernel metrics

A hardware device used to store encrypted Prometheus backups

A security tool that hides metric names from external scrapers

What is "Inhibitions" in Alertmanager?

Muting specific alerts if a related parent alert is already active

A way to limit the CPU usage of the Alertmanager process

Preventing certain users from accessing the Alertmanager UI

A timeout that stops an alert from firing if it lasts too long

What is "Reporting" in Grafana?

A feature that generates and emails PDF snapshots of dashboards

A tool for filing bugs directly to the Grafana GitHub repo

An audit log that shows which users viewed which dashboard

A way to calculate the cost of cloud infrastructure in real-time

Quizzes

Prometheus & Grafana: Monitoring & Observability Fundamentals

Monitoring DevOps Observability

Quiz

Prometheus & Grafana: Monitoring & Observability Fundamentals

Mohammad Abu Mattar20 QuestionsIntermediatePublished: 13 Feb, 2026

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