The HCIP-Datacom-Advanced Routing & Switching Technology certification requires passing two written exams: the H12-821 core and the H12-831 sub-direction exam. The order is not required, and the core is not repeated within the validity of its result.
Huawei's authorized training channel publishes the same bar for both exams: 600 out of 1000 total. It is a scaled score, not a fixed percentage of questions.
Each exam allows 90 minutes. Huawei does not publish the question count for either exam - time, not item count, is the published constraint.
Huawei's exam-outline document family prices the H12-821 core at 300 USD and the H12-831 elective at 180 USD. Confirm the live figure at scheduling - Pearson prices vouchers by region.
How the Core-Plus-Elective Structure Works
HCIP-Datacom is not one exam - it is a family of professional certificates built on a shared core. Huawei's authorized training channel states the rule directly: obtaining any certificate in the HCIP-Datacom series requires passing the core exam and the corresponding sub-direction exam, the order of the two exams is not required, and the core exam does not need to be repeated within the validity of its result. Pass the H12-821 core once, and each sub-direction exam you add within its validity earns another HCIP-Datacom certificate.
The most-traveled pair is the Advanced Routing & Switching Technology certificate: H12-821 HCIP-Datacom-Core Technology plus H12-831. Huawei's Career Certification brochure maps five more sub-directions onto the same core - Campus Network Planning and Deployment (H12-841), Enterprise Network Solution Design (H12-851), WAN Planning and Deployment (H12-861), SD-WAN Planning and Deployment (H12-871), and Network Automation Developer (H12-881). This page covers the H12-821 plus H12-831 pair; the scheduling, delivery, and fee rules below apply to every exam in the family.
The validity mechanic rewards sequencing. If you pass the core first, each sub-direction exam you pass inside the core result's validity converts to a certificate. If you pass several sub-direction exams first and then clear the core inside their validity, the matching certificates issue together. Either way, the two-exam total for the first HCIP-Datacom certificate is 480 USD of exam fees at Huawei's published anchors - 300 USD for the core and 180 USD for the elective, confirmed at scheduling.
What the Two Exams Actually Test
The H12-821 core is the deep routing-and-switching exam. Huawei's authorized course structure for the core publishes the knowledge map: IP routing basics (RIB and FIB, route import), OSPF core knowledge through special areas and summarization, IS-IS core knowledge, BGP core knowledge including path attributes, route reflectors, route selection, and BGP EVPN basics, routing and traffic control with policy-based routing and MQC, then switching core knowledge - RSTP, MSTP, stack and CSS - plus multicast (IGMP, PIM), IPv6 core (ICMPv6, NDP, DHCPv6), network security basics on Huawei firewalls, network reliability (BFD, VRRP), network service and management, large-scale WLAN architecture, and the enterprise network solution overview spanning campus, data center, and SD-WAN.
The H12-831 elective is where the protocols go to production: OSPF and IS-IS fast convergence and equal-cost routes, BGP AS_Path and community filters with regular expressions, ORF and peer groups, OSPFv3 against OSPFv2, the IPv6 extensions of IS-IS and BGP, then the switching depth - VLAN aggregation, MUX VLAN, QinQ, port isolation and port security, DHCP snooping, IP Source Guard - and the MPLS block: LDP, MPLS VPN intranet and hub-and-spoke deployment, OSPF for MPLS VPN, closing with routine maintenance, troubleshooting method, and network migration procedure.
Both exams are written examinations with five published question formats - single-answer questions, multiple-answer questions, true-or-false, short-response items, and drag-and-drop items - inside 90 minutes each, against a 600-of-1000 scaled bar. Huawei publishes no question count for either exam, so any page quoting you a fixed number of items is guessing. The prerequisites are the HCIA-Datacom knowledge set for the core, and the core's own course knowledge for the elective.
Can You Take the HCIP-Datacom Exams From Home?
Yes - with one restriction that matters. Both exams run on Pearson VUE infrastructure: at a Pearson test center, or online from home through OnVUE. Pearson hosts a dedicated live Huawei OnVUE page with the program minimums - Windows 10 or macOS 14 or higher, a working webcam, microphone, and speaker (no headphones), one display only, at least 6 Mbps down and 2 Mbps up, and every other application closed. Scheduling runs through your verified Huawei account on the Huawei Talent portal, which hands you to Pearson.
The restriction: Pearson's Huawei program page states that OnVUE is only for candidates residing outside China mainland. Chinese-language appointments scheduled through OnVUE are cancelled and refunded, and candidates residing in China mainland are prohibited from taking any Huawei exam through OnVUE - Pearson publishes that violations mean revoked scores, forfeited certificates, and no refund. If you reside outside China mainland, the at-home route is open for both H12-821 and H12-831; if you reside in China mainland, the Pearson test-center route is the compliant one. This service only supports compliant sittings and will tell you plainly which route fits.
At a test center you arrive at least 15 minutes early with two valid, original, non-expired photo identity documents - photocopies are not accepted - and your registered ID information must match your Huawei Talent registration exactly or the voucher is invalidated with no refund. For OnVUE, check-in opens 30 minutes before the appointment with photo capture and a 360-degree room scan.
What the HCIP-Datacom Pair Costs
Huawei's exam-outline document family prices the H12-821 core at 300 USD and the H12-831 elective at 180 USD - 480 USD of exam fees for the pair, with the live figure confirmed at scheduling because Pearson's Huawei voucher store prices by region (Americas, Asia-Pacific, China, EMEA) with the currency locked per redemption country. Payment runs three routes: credit card on the Pearson website or through the call center, cash at a test center, or an exam voucher valid for one year from issue.
Two rules protect the fees once paid. Reschedule or cancel at least 24 hours before each appointment - inside that window, or on a no-show, the fee cannot be refunded. And the ID documents you bring must match the registered information exactly; a mismatch means you cannot sit and the voucher is invalidated with no refund. If you fail, Pearson's published retake policy lets you rebook at least 7 calendar days after the failed sitting - each attempt is a fresh full fee, so the 480 USD pair price is only the clean-run budget.
Where HCIP-Datacom Sittings Go Wrong
- •[object Object]
- •[object Object]
- •[object Object]
- •[object Object]
- •[object Object]
How the Service Works
You send the brief
You get a straight feasibility answer
The sittings are handled end to end
The pass posts, then the fee
What You Get
A team that has read the actual documents: Huawei's authorized training channel for the H12-821 and H12-831 course-and-exam maps and the pair rule, Pearson's Huawei program page for the retake policy and the residency restriction, the written exam guide for the scheduling and ID rules, and Huawei's Career Certification brochure for the exam-pair map and the three-year validity. Every fact on this page traces to one of those.
Sittings aligned to the published format - two exams, 90 minutes each, 600 of 1000, five question formats - on the delivery route your residency actually permits. And a payment structure that keeps the risk where it belongs: the service fee is due only after the agreed result posts.
Handling It Safely
Every engagement starts from what Huawei and Pearson VUE publish today: the authorized course-and-exam maps for the two exams, the program page's retake policy and residency rule, the written exam guide's scheduling and ID requirements, and the OnVUE minimums on Pearson's dedicated Huawei page. The plan is built inside those boundaries, not around them.
What we control is the quality, discretion, and privacy of the engagement: an honest feasibility answer before anything starts, a structured sitting plan for both exams, and a fee that follows the result. Your details stay private, we never ask for more than the sittings require, and the residency rule is checked before booking - never discovered after it.
Payment: After the Result
The exam fees themselves (300 USD for the core and 180 USD for the elective at Huawei's published anchors, confirmed at scheduling) go to Pearson through the normal booking route. The service fee for the sittings is due only after the agreed result posts - you verify the pass against Huawei's e-Cert notification first, then settle.
No upfront service charge, no fee to hear the feasibility answer, and no invoice if the agreed result does not post. That structure is the whole point: the sitting team carries the execution risk, not you.
Sittings Handled
Core first, elective three weeks later - they sequenced the pair so the core result's validity covered both. BGP route selection and the MPLS VPN block were exactly where they said the exams would push. Paid after each pass posted.
The residency check came before anything else - I'm outside China mainland, so both sittings ran at home on OnVUE, 90 minutes each. Credential emails arrived the next working day. Fee after the results, exactly as promised.
I had failed the core on my own and the 7-day retake rule was burning my window. They rebooked inside the rule, handled both sittings, and I settled the service fee only after the second pass showed in Huawei's system.
HCIP-Datacom Exam Help - Questions
Can the HCIP-Datacom exams be taken online from home?
How many exams does the HCIP-Datacom certification require?
How many questions are on the H12-821 and H12-831 exams?
What is the passing score for HCIP-Datacom?
How much does the HCIP-Datacom certification cost?
What is the retake policy for Huawei exams?
What happens if I need to reschedule or cancel?
When do I pay the service fee?
Get the HCIP-Datacom Sittings Handled
Send your Huawei background, which exams you still need, and your deadline. You get an honest feasibility answer, and the service fee is due only after your pass posts.
Book HCIP-Datacom Exam Help