300-640 DCAI exam-day guide
300-640 DCAI · Prepare for the day ahead.
Your checklist
Confirm exam delivery format and scheduling with the provider
The 300-640 DCAI exam is delivered through a certification provider, and the exact format (in-person test center vs. online proctored), scheduling window, and reschedule/cancellation deadlines are set by that provider. Log in to your candidate account and confirm your appointment details, the delivery method, and the reschedule policy. If anything on the confirmation page is ambiguous, contact the provider's support before test day rather than assuming.
Government-issued photo ID matching your registration name
Bring at least one valid, unexpired government-issued photo ID. The name on the ID must match the name on your registration; if you have a preferred name, maiden name, or a single-name passport, confirm with the provider in advance how identity will be verified. For online proctoring, have the ID ready to hold up to the camera at check-in.
Know the exam blueprint and topic weights
Before the final week, download or re-read the official exam description for 300-640 and list the domains with their approximate percentage weights. Use that list to decide what to review in the last 72 hours. Do not rely on memory of the blueprint; confirm the current published version with the provider, since blueprints are revised periodically.
Review your weak-domain notes only
In the final 72 hours, study from your own condensed notes and error log rather than opening new material. Focus on the two or three domains where your practice scores were lowest. Re-deriving a concept from first principles is more useful at this stage than re-reading documentation end to end.
Take one timed practice set under exam conditions
At least 48 hours before the exam, complete one full timed practice run with no notes, no pauses, and the same time limit as the real exam. Review every missed question and write down the underlying concept, not just the correct answer. Stop full-length practice runs within 24 hours of the exam so fatigue does not carry over.
Prepare your testing environment (online proctoring)
If testing online, confirm the provider's requirements for camera, microphone, browser, and system check, and run the equipment check the day before. Use a private, quiet room with a clear desk, stable power, and a wired or reliable network. Confirm with the provider which items are permitted on the desk; policies on notes, water, and phones vary.
Plan travel and arrival buffer (test center)
If testing at a center, confirm the address and arrival time, and plan to arrive with a buffer well before your appointment. Check local transport disruptions the night before. Late arrival can result in forfeiture of the seat and fee, so confirm the provider's cutoff for admission.
Confirm break and scheduling policy with the provider
Whether breaks are allowed, whether the clock stops during a break, and whether you can leave the testing room are provider-specific. Confirm these rules in advance so you can plan hydration and timing. Do not assume unscheduled breaks are permitted.
Confirm scoring, pass score, and result delivery
The passing score and score-report format are set by the certifying body. Confirm the scaled score range, the minimum passing score, and when results are released (immediately on screen vs. by email later). Also confirm the retake policy and any waiting period before a second attempt.
Set up a question-flagging strategy
Decide in advance how you will handle uncertain questions: answer every question as you go, flag the ones you are unsure of, and return to them if the interface permits review. Confirm whether the delivery interface allows navigation back to previous questions and whether it marks unanswered items before submission.
Sleep, meals, and medication routine
Keep the 24 hours before the exam boring: normal sleep schedule, normal meals, no new caffeine dose on exam morning. If you take prescribed medication, follow your normal routine. Cognitive performance on a multi-hour technical exam depends more on rest than on last-minute cramming.
Re-verify appointment time zone
Online proctored exams are often scheduled in a specific time zone shown on your confirmation. Convert the appointment time to your local time and set two alarms. A time-zone mistake is one of the most common avoidable no-shows; if the confirmation does not state a time zone, ask the provider.
Plan the day
Switch from learning to consolidating. Re-read the official blueprint and map each domain to your notes. Spend most of the time on your two weakest domains, and re-derive key concepts rather than re-reading documentation. Do one timed practice set of moderate length and review every miss, writing the concept behind the error. Prepare logistics: confirm appointment, ID, delivery format, and (for online) run the system check. Stop introducing new topics after this window; new material this late mostly adds anxiety.
Do a light review of your error log and condensed notes only, for no more than a couple of hours. Do not take a full-length practice exam. Confirm the appointment time in your local time zone, the address or meeting link, and the arrival/check-in window. For online proctoring, clear your desk, test camera and microphone, and confirm the room is private. Pack ID and any permitted items. Set alarms, eat a normal dinner, and go to bed at your usual time. Avoid alcohol and heavy late meals.
Eat a normal meal and hydrate moderately. Do a 20-30 minute skim of your one-page summary sheet, then stop. Arrive at the test center with buffer, or log in early for online proctoring and complete identity verification and the room scan. Keep your desk clear of anything not explicitly permitted. Close other applications and silence notifications. Use the restroom before the clock starts, since break rules are provider-specific. If something goes wrong with check-in, contact provider support immediately and keep records.
Read each question fully, including qualifiers such as 'best', 'first', and 'not'. Answer every question as you go so nothing is left blank if time runs short. Flag uncertain items and return to them if the interface allows. Budget time: note the number of questions and total time, and aim to be at roughly the proportional point at each quarter mark. If a question stalls you, make your best choice and move on. Before submitting, confirm you have no unanswered or flagged items you intended to revisit, then submit deliberately.
Rules to check
Identity: bring valid government-issued photo ID whose name matches your registration. If your ID name differs from your registration (preferred name, name change, single-name passport), confirm the provider's verification process before test day.
Permitted materials: assume nothing is allowed unless the provider states otherwise. Confirm the rules for notes, calculators, water, phones, and watches for your specific delivery format, and follow the proctor's instructions at all times.
Breaks: break availability, duration, and whether the clock stops are provider-specific. Confirm the policy in advance and raise your hand or use the designated mechanism rather than leaving the testing area on your own.
Prohibited conduct: no communication with others, no screen capture or recording, no use of unauthorized devices or materials, and no assistance from another person. Suspected misconduct can lead to score cancellation and a ban, per the provider's policy.
Scoring: the passing score, score scale, and result timing are set by the certifying body. Confirm the current passing score and score-report format with the provider; results may be shown on screen or delivered later by email.
Retakes: the retake policy, waiting period, and fees are provider-specific. Confirm these before the exam so you know your options if you do not pass.
Technical issues: if the delivery platform fails during the exam, stop and contact provider support through the documented channel, and keep any case or ticket numbers. Do not attempt to restart or troubleshoot in ways the proctor has not authorized.
Record keeping: save your appointment confirmation, check-in emails, and any support correspondence until results are finalized, so you can resolve disputes about attendance, identity, or technical failures.