Cisco DCAUTO 300-635 exam-day guide
Cisco DCAUTO 300-635 · Prepare for the day ahead.
Your checklist
Confirm exam delivery format and appointment
Log in to your Cisco certification account (or the testing provider's portal) to verify the exam name/code (300-635 DCAUTO), your appointment date and time, and whether you are taking it at a test center or online with a remote proctor. Confirm the exact start time in your local time zone, since portals often display UTC or provider-local time. If anything looks wrong, reschedule or contact support before the appointment window closes.
Government-issued photo ID matching your registration name
Bring the original, unexpired ID that matches the name on your registration exactly. A passport or a national/state photo ID is typical; a driver's license may be accepted for test-center delivery. Exact accepted ID types differ by country and by delivery method, so confirm the accepted forms with the provider before test day. Photocopies and expired documents are almost never accepted.
Second form of identification (test center)
Some test centers require a second ID, often a signature-bearing card such as a bank card or another government ID. This varies by location and provider, so confirm the requirement with the provider rather than guessing. If a second ID is required and you do not bring one, you may be turned away.
Know the exam blueprint and weighting
Review the official 300-635 exam topics page and note the domains and their approximate weights. DCAUTO covers data center automation topics such as Cisco ACI, NX-OS/Nexus automation, model-driven programmability (YANG, NETCONF, RESTCONF, gNMI), Python scripting, Ansible, and CI/CD pipelines. Use the published weights to decide where to spend your final study hours. Do not rely on memory of an older blueprint; verify the current version.
Remote-proctoring system check (online delivery only)
If testing online, run the provider's system test well before exam day: webcam, microphone, browser compatibility, bandwidth, and any required secure browser. Confirm the room and desk requirements (clear desk, no second monitor, no notes, door closed) with the provider's rules page. needs_review: exact software and room rules are provider-specific and can change.
Quiet, private room and stable internet (online delivery only)
Arrange a private room where you will not be interrupted, with a reliable wired or strong Wi-Fi connection and a power source for your laptop. Notify household members. Proctors may ask you to pan the camera around the room before starting. Confirm the provider's specific environment rules in advance.
Practice the tooling in a lab or sandbox
Be able to write and read Python scripts that call REST APIs, construct JSON/XML payloads, parse YANG-modeled data, and run basic Ansible playbooks against network devices. Hands-on fluency matters more than memorizing syntax. Use Cisco DevNet sandboxes or your own lab; confirm current sandbox availability on DevNet.
Review CLI and API specifics you will be asked about
Refresh ACI object model concepts (tenants, VRFs, bridge domains, EPGs, contracts), APIC REST calls, NX-OS on-box Python and guest shell basics, NETCONF/RESTCONF operations, and gNMI telemetry concepts. Know how to authenticate and where configuration lives conceptually. Avoid rote memorization of version-specific defaults you cannot verify.
Plan logistics: travel, parking, arrival buffer
For a test center, confirm the address, parking or transit options, and arrive early enough to complete check-in. The provider sets the required arrival time; confirm it. For online delivery, log in before the appointment time to complete ID checks and the room scan.
Understand break and scoring rules before you start
Confirm with the provider whether breaks are allowed, whether the clock stops during a break, and how the exam is scored. Cisco associate/professional exams are typically pass/fail against a scaled score with a passing threshold set per exam; do not assume a specific number. needs_review: confirm the current passing score and break policy with Cisco or the provider.
Prepare for question navigation and time management
Know in advance how to flag questions for review, move between questions, and whether you can return to earlier items. Budget roughly a minute per question as a starting heuristic and adjust to the actual item count and time limit shown at the start. Do not spend excessive time on a single hard item.
Rest, hydration, and a backup plan
Sleep well, eat before the exam, and have a backup plan for connectivity or travel problems (phone number for provider support, alternate internet). If a technical failure occurs, contact the provider promptly; do not attempt to restart the exam on your own without guidance.
Plan the day
Do a final pass over the official exam topics and your weak domains. Take one or two timed practice sets to calibrate pacing, then review only the explanations for missed items. Stop learning brand-new topics; consolidate what you already know. Confirm your appointment, ID, and delivery-method requirements with the provider.
Re-run the remote-proctoring system test (online) or confirm travel and parking (test center). Rehearse writing a small Python REST call and a basic Ansible playbook from memory against a sandbox. Review ACI object relationships and NETCONF/RESTCONF/gNMI distinctions, since these are commonly tested conceptual areas.
Light review only: skim your own notes and error log. Do not cram new material. Prepare your ID, confirm the start time in local time, charge devices, and set two alarms. Get a full night's sleep. Avoid alcohol and heavy screen time late in the evening.
Eat a normal meal, hydrate, and arrive or log in early per the provider's instructions. For a test center, bring your ID(s) and leave prohibited items (notes, phones, smartwatches) outside the testing room. For online delivery, clear your desk, close other applications, and complete the room scan calmly.
Read the instructions on navigation, breaks, and time limit. Note the total time and question count, then set a rough per-question budget. If a tutorial is offered, use it to learn the interface rather than skipping it.
Work steadily. Flag uncertain items and return to them if the interface allows. For configuration/scripting items, read the whole prompt before answering and eliminate clearly wrong options. For scenario questions, identify the required outcome first, then the tool or API that achieves it. Watch the clock and reserve the last few minutes to review flagged items.
Note your result and, if unsuccessful, capture which domains felt weakest while memory is fresh. The provider will show or email a score report; use it to plan a retake. Confirm any retake waiting period with Cisco or the provider before scheduling.
Rules to check
Bring original, unexpired government-issued photo ID whose name matches your registration exactly. Accepted ID types vary by country and delivery method; confirm the list with the provider before exam day.
Do not bring or use unauthorized materials: notes, books, phones, smartwatches, or second screens. For online delivery, keep your desk clear and your room private; proctors may ask you to show the room.
Arrive or log in by the provider's required time. Late arrival may forfeit your seat or appointment; confirm the arrival and check-in window with the provider.
Breaks are governed by provider policy and may or may not stop the clock. Confirm the break rules for your delivery method before you begin, and plan hydration accordingly.
The exam is scored against a passing standard set by Cisco; do not assume a specific passing score or a fixed number of questions. Confirm current scoring details with Cisco or the provider.
Do not attempt to record, copy, or share exam content. Doing so violates the certification agreement and can void your result and affect eligibility for future exams.
If a technical problem occurs, stop and contact provider support immediately. Do not troubleshoot the exam session on your own in ways the proctor has not authorized.
Rescheduling, cancellation, and retake policies have deadlines and fees that change. Confirm the current terms with Cisco or the testing provider rather than relying on secondhand information.