Docker Certified Associate exam-day guide
DCA · Prepare for the day ahead.
Your checklist
Government-issued photo ID
The name on the ID should match your registration record exactly (including middle names and suffixes). Confirm with the provider which ID types and name variations they accept, and whether a secondary ID is required.
Reliable internet connection plus a backup
Wired ethernet is more stable than Wi-Fi. Have a phone hotspot or secondary network ready as a fallback. Test upload/download speed and latency the day before, not the morning of.
Working webcam, microphone, and speakers/headset
Test all three in the proctoring system check so you catch driver or permission problems early. Confirm with the provider whether headsets or external speakers are permitted before using them.
A private, quiet, well-lit room
Close and lock the door, tell housemates you are unavailable, silence phones and doorbells, and make sure the light source is in front of you so your face is not silhouetted.
A cleared desk and cleared room
Remove papers, notebooks, books, second monitors, printers, and anything with writing on it from the camera's view. Wall posters or notes in view can also be flagged, so scan the background.
Laptop charged with the charger plugged in
A battery drop mid-exam is a common avoidable failure. Plug in directly rather than through a dock, and disable sleep, screen savers, and automatic updates.
All other applications closed and notifications off
Quit chat, email, sync clients, VPNs that might interfere, and anything that can pop up over the exam window. Unplug external monitors and disable virtual desktops.
Your exam access link, login credentials, and appointment confirmation
Know the exact start time in your local time zone, plus the check-in window and the provider's support phone number in case you cannot launch the exam.
Proctoring software installed and system check completed in advance
Run the provider's compatibility test at least 48 hours ahead so you can fix any issue while support is reachable. Confirm with the provider which browser or client they require.
Scratch paper, whiteboard, or notes - only if permitted
Many proctored exams allow nothing at all, or only an erasable whiteboard that stays in camera view. Confirm the allowed-materials list with the provider rather than assuming.
A one-page command reference you review before check-in
You cannot use notes during the exam, so consolidate beforehand: container lifecycle, image build and tagging, volume and bind mount syntax, network driver choices, service and stack commands, secrets, and TLS/signing concepts.
A timing plan for roughly 1.5 minutes per question
Know your pacing target before the clock starts so you do not burn the first ten minutes re-reading question one.
Plan the day
Confirm the appointment, start time, and time zone; verify the name on your registration matches your ID; run the full system and equipment check and install any required proctoring client. Then shift to targeted review: rank the blueprint domains by how much they are weighted and how weak you are, and drill only the weakest two.
Do one timed practice block of about 55 questions in 90 minutes to calibrate pacing and to rehearse the flag-and-return workflow. Afterward, review only the explanations for questions you missed - do not start learning brand-new tools this late.
Read the provider's exam rules and allowed-materials list end to end, including their policy on breaks, scratch materials, and technical failures. If anything is unclear, ask support in writing now, not on exam day.
Do a light pass over your own one-page reference: container vs image commands, Dockerfile instructions and multi-stage builds, tagging and registry push/pull, volume vs bind mount vs tmpfs, bridge vs host vs overlay vs macvlan, swarm services vs standalone containers, compose file structure, secrets vs configs, and image signing/scanning concepts. Stop early.
Physical setup: charge the laptop, test the webcam and mic in the exact room you will use, clear the desk, and confirm the room can be locked or closed. Get a full night's sleep - fatigue costs more points than one extra hour of review.
Eat, hydrate, and avoid anything that will make you need the restroom early. Re-run a quick audio/video and network check, plug in power, close every other application, and put your ID within arm's reach.
Start check-in well before your scheduled time - assume identity verification and the room scan take longer than expected. Confirm the exact early-arrival window with the provider; if you are late, admission is not guaranteed.
Read every question to the end, especially for 'choose two' or 'choose three' wording, and watch for 'BEST' or 'MOST likely' qualifiers that change the answer. Answer what you know, flag what you do not, and keep moving - about 1.5 minutes per question.
Reserve the last 10-15 minutes to revisit flagged items and to make sure no question is left blank. Unless the provider states otherwise, confirm whether unanswered questions are scored as incorrect and whether there is a penalty for guessing.
Stay seated, in frame, and facing the camera. Do not read questions aloud, cover your mouth, or look away repeatedly - proctors flag this even when nothing is wrong. If the connection drops or the client crashes, contact the proctor or support immediately and do not keep troubleshooting alone.
Note how and when results are delivered and what the certification validity period is - confirm both with the provider rather than relying on memory, and put the recertification deadline in your calendar the same day.
Rules to check
Bring a valid government-issued photo ID whose name matches your registration exactly. If your ID name differs in any way (nickname, married name, missing middle name), resolve it with the provider before exam day - proctors can and do refuse admission.
Only materials explicitly listed as allowed may be on your desk. Everything else, including phones, smartwatches, printed notes, and second screens, must be out of reach and out of view. Confirm the allowed list with the provider in advance.
You must remain in the camera's view and in the testing room for the duration. Leaving the room, letting another person enter, or obscuring the camera is treated as a violation. Confirm with the provider whether any break is permitted and whether the clock stops during it.
Do not capture, photograph, record, discuss, or redistribute exam content in any form. Doing so breaches the candidate agreement and can void your result and your eligibility to retake.
Scoring is criterion-referenced against a passing standard set by the certifying body, and the result is typically reported as pass or fail rather than as a raw percentage. Confirm the current passing standard, question count, and time limit with the provider - these details change between exam versions.
Confirm the retake policy, the waiting period between attempts, and any fee before you sit the exam, so a bad first attempt does not catch you unprepared financially or logistically.
If a technical problem occurs, stop and contact the proctor or the provider's support line immediately and get a ticket or reference number. Do not attempt unauthorized workarounds or restart mid-section without guidance - undocumented issues are much harder to appeal.