Practice Test GeeksDCA - Docker Certified Associate Exam Practice Test
← All DCA Flashcard Decks

Data Analysis & Reporting Flashcards

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

Read the first 7 Data Analysis & Reporting flashcards as text

  1. Which command shows real-time resource usage statistics for all running containers?

    Answer: docker stats

    `docker stats` streams live CPU, memory, network I/O, and block I/O metrics for running containers.

  2. You want to capture a single snapshot of container stats without streaming continuously. Which flag achieves this?

    Answer: --no-stream

    `docker stats --no-stream` outputs one set of stats and exits instead of continuously streaming.

  3. Which `docker system` subcommand displays disk usage broken down by images, containers, and volumes?

    Answer: docker system df

    `docker system df` reports disk usage for images, containers, local volumes, and build cache.

  4. A developer needs to retrieve the last 50 log lines from a container named `api`. Which command is correct?

    Answer: docker logs --tail=50 api

    `docker logs --tail=50 api` outputs only the last 50 lines from the container's log.

  5. Which log driver sends container logs directly to a syslog server?

    Answer: syslog

    The `syslog` log driver forwards container log messages to a syslog-compatible server.

  6. What does the `--format` flag in `docker stats` allow you to do?

    Answer: Customize the output columns using Go templates

    `--format` accepts Go template strings to select and arrange which stats fields are displayed.

  7. Which Docker CLI command lists all Docker events (create, start, stop, etc.) occurring in real time?

    Answer: docker events

    `docker events` streams real-time lifecycle and configuration events from the Docker daemon.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. training.mirantis.com — Test delivery, eligibility, fees, passing score, renewal, retake policy, score release, time limit, score validity · verified Oct 2026