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DevOps & Automation Flashcards

6 cards from real IT and Technology practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which configuration management tool uses an agentless, SSH-based approach?

    Answer: Ansible

    Ansible is agentless and communicates with managed nodes over SSH using YAML-based playbooks, requiring no software installed on targets.

  2. In Docker, what is the function of a Dockerfile?

    Answer: Defining the instructions to build a container image

    A Dockerfile contains a series of instructions that Docker executes in order to build a repeatable, layered container image.

  3. What metric best measures the speed of a DevOps team's deployment process?

    Answer: Deployment frequency

    Deployment frequency measures how often code is successfully released to production, directly reflecting pipeline speed and automation maturity.

  4. Which practice involves automatically rolling back a deployment when error rates exceed a threshold?

    Answer: Automated rollback

    Automated rollback uses monitoring thresholds to detect failures and revert to the previous stable version without manual intervention.

  5. What is the primary benefit of using immutable infrastructure?

    Answer: Servers are never modified after deployment, improving consistency

    Immutable infrastructure replaces servers rather than patching them in place, eliminating configuration drift and ensuring consistent, reproducible environments.

  6. Which open-source tool is widely used for monitoring metrics and alerting in DevOps environments?

    Answer: Prometheus

    Prometheus is an open-source time-series monitoring system that scrapes metrics from targets and supports alerting via Alertmanager.