Assembly Language Certification

The Assembly Language Certification is a free intermediate-level, 20-minute skill test from Science of Apps. It tests assembly language skills — CPU architecture, registers and data representation, instructions, flags and addressing modes, control flow, the stack and calling conventions on x86-64 and Arm64, and assemblers, system calls and debugging — written to the Intel 64 Software Developer's Manuals, the System V AMD64 ABI, Microsoft's x64 calling convention, Arm's A64 guide and NASM documentation for 2026. Score 70% or more on its 20 questions to earn a verifiable Assembly Language Proficiency certificate (SOA-AL). Every question is based on published standards and research — including Intel 64 and IA-32 Architectures Software Developer's Manuals (Intel), NASM: The Netwide Assembler documentation (NASM), System V Application Binary Interface: AMD64 Architecture Processor Supplement (x86-64 psABI project) — and each answer is explained with its source.

Science of Apps offers a free Assembly Language Certification, updated for 2026 and 2027. It measures architecture and data representation, instructions, flags and addressing, control flow, the stack and calling conventions and assemblers, system calls and debugging and gives instant results with a shareable certificate.

Read the four skill areas on this page, then take the 20-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a Assembly Language Proficiency certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: Intel 64 and IA-32 Architectures Software Developer's Manuals (Intel); NASM: The Netwide Assembler documentation (NASM); System V Application Binary Interface: AMD64 Architecture Processor Supplement (x86-64 psABI project); Learn the architecture: A64 instruction set architecture guide (Arm); x64 calling convention (Microsoft Learn). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Four skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Architecture and Data Representation (Registers, Number systems and Endianness and two's complement); Instructions, Flags and Addressing (Arithmetic and logic, Flags and Addressing modes); Control Flow, the Stack and Calling Conventions (Jumps and loops, Stack frames and Calling conventions); Assemblers, System Calls and Debugging (Assembler syntax and sections, System calls and Debugging and security). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

Embedded or firmware engineer, Systems or kernel programmer, Reverse engineer or malware analyst, Compiler or performance engineer and Computer science student. It suits anyone who wants a quick, verifiable way to show Assembly Language knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

Most learners start with x86-64 (used in most PCs and servers) or Arm64 (used in phones, Apple silicon Macs and many cloud servers). The core ideas — registers, instructions, flags, the stack and calling conventions — carry over between architectures.

A calling convention is the agreed set of rules for how functions receive arguments, return values and preserve registers. For example, on Linux x86-64 (System V ABI) the first integer arguments go in RDI, RSI, RDX, RCX, R8 and R9 and the return value comes back in RAX.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

20 questions — 5 from each of 4 skill areas — with a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

We rate it Intermediate: assumes hands-on experience in the role. It has 20 scenario questions — 5 from each of 4 skill areas — and a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.