- Which RFID Credential This Cheat Sheet Covers
- Exam Logistics at a Glance
- The Ten Domains in One Pass
- Domains 1-3: Foundations, Safety, and RF Concepts
- Domains 4-6: Protocols, Tags, and Interrogators
- Domains 7-9: Design, Standards, and Instruments
- Domain 10: Troubleshooting Mindset
- Test-Day Rules and Retake Mechanics
- Keeping the Credential Current
- A Domain-Ordered Review Schedule
- Frequently Asked Questions
- This is ETA International's Radio Frequency Identification Technical Specialist exam: 75 questions, 2 hours, 75% to pass, no hands-on component.
- The verified ETA exam fee is USD 105; ExamRoom.AI remote proctoring adds USD 16 for this two-hour exam.
- Ten official competency domains define scope, but ETA publishes no percentage weights, so study all ten evenly.
- A non-programmable calculator is allowed; phones are prohibited and scratch paper must be surrendered at the end.
Which RFID Credential This Cheat Sheet Covers
The acronym "RFID" appears in several credential names across the industry, so start by confirming you are studying the right one. This page covers Radio Frequency Identification Technical Specialist, issued by ETA International (ETA). It is not a credential from the RFID Professional Institute, and it is not CompTIA RFID+. Fees, rules, and content from those programs do not apply here.
The ETA exam is a proctored knowledge examination. It tests what you know about RFID systems, not what you can do with your hands, because there is no hands-on assessment. The intended background is foundational electronics and RF communications, which means the questions assume you are comfortable with basic circuit and radio concepts and are applying them to identification systems.
If you want the broader picture before diving into facts, our overview pages on what RFID certification is and the main RFID certification guide explain where this credential sits in the field. This cheat sheet is the compressed, review-the-night-before version.
Exam Logistics at a Glance
Memorize these numbers first. They are the easiest points of confusion and the ones candidates most often get wrong when planning.
| Item | Fact |
|---|---|
| Issuer | ETA International (ETA) |
| Format | Proctored knowledge examination, no hands-on assessment |
| Questions | 75 |
| Time limit | 2 hours |
| Passing score | 75% |
| Exam fee | USD 105 |
| Remote proctoring add-on | USD 16 (ExamRoom.AI, rate effective October 1, 2025) |
| Delivery | ETA Certification Administrators, Trapeza online or paper testing |
| Retake | One free retake within one year, after a 30-day wait |
| Certification cycle | Four years |
Run the arithmetic on the passing score once so it is not a surprise: 75% of 75 questions means you need 57 correct answers (56.25 rounds up in practice to a whole number of questions). That gives you room to miss 18. For a deeper look at how scoring works, see our RFID passing score breakdown.
The Ten Domains in One Pass
ETA's scope source is the document Radio Frequency Identification - RFID - Technical Specialist Competency Requirements (copyright 2021). The ten domain headings below are official exam competency objectives, not preparation-curriculum headings, which means they describe what the exam can ask rather than a recommended teaching order.
- Introduction to Radio Frequency Identification (RFID) Fundamentals
- RF Safety
- RF Fundamentals Applied in RFID
- Communication Methods and Protocol in RFID
- Tag Characteristics
- Fundamentals of Interrogator Communications
- RFID System Design Selection and Installation
- RFID Standards and Regulations
- Additional Instrumentation Used with RFID Systems
- Troubleshooting an RFID System
A small structural note: the top-level headings run 1.0 through 10.0, but the subordinate numbering inside sections 9 and 10 is inconsistent in the source document. That is a quirk of the competency list, not something to stress over. Know the ten headings and the topics beneath them.
Domains 1-3: Foundations, Safety, and RF Concepts
Domain 1: Introduction to RFID Fundamentals
This is the vocabulary layer. Expect questions that check whether you can name system components and describe how they cooperate.
- Know the core pieces of an RFID system: tag, interrogator (reader), antenna, and the host/software side.
- Be able to explain, in plain terms, how a tag and interrogator exchange information over a radio link.
- Distinguish passive, semi-passive, and active tag concepts and what powers each.
Domain 2: RF Safety
Safety is its own domain, so it is fair game for several questions. Do not skim it because it feels non-technical.
- Understand why RF exposure is a concern and how exposure relates to power, distance, and time.
- Know general safe-practice habits around transmitting antennas and interrogators.
- Be ready for scenario questions asking what a technician should do before working near an active antenna.
Domain 3: RF Fundamentals Applied in RFID
This is where the electronics-and-RF prerequisite pays off. The exam applies general RF theory to identification systems.
- Frequency, wavelength, and the relationship between them.
- Decibels and power ratios, including how gain and loss combine.
- Antenna basics, propagation, and why environment (metal, liquids) affects read behavior.
- Near-field versus far-field behavior and how it changes how a tag is energized.
Because a non-programmable calculator is permitted, expect some quantitative items. Practice dB arithmetic and frequency-to-wavelength conversions by hand until they are routine. If you are weak on electronics basics, review the prerequisites in our RFID requirements article before you start memorizing RFID-specific material.
Domains 4-6: Protocols, Tags, and Interrogators
Domain 4: Communication Methods and Protocol in RFID
How data actually moves between tag and interrogator.
- Modulation and encoding concepts at a level sufficient to recognize and compare them.
- Anti-collision: why multiple tags in one field create a problem and the general approaches used to resolve it.
- The difference between a physical signaling method and the higher-level protocol riding on top of it.
Domain 5: Tag Characteristics
Expect comparison-style questions. Build a mental table of tag types.
- Passive versus active versus semi-passive: power source, range tendency, cost tendency, and typical use.
- Memory types and what a tag can store, including identifiers versus user data.
- Form factors and how mounting surface and packaging influence performance.
- Read-only versus read/write behavior.
Domain 6: Fundamentals of Interrogator Communications
The reader side of the link.
- What an interrogator does: generate the field, transmit commands, receive and decode the response.
- How interrogators connect to a host system and pass data upstream.
- Basic interrogator configuration concepts such as power level and antenna selection.
- Single versus multiple antenna arrangements and their effect on coverage.
These three domains form the technical heart of the exam. A good drill is to trace one complete read event end to end: the interrogator emits energy, the tag harvests or uses it, the tag responds using its modulation scheme, the interrogator decodes, and the host receives data. If you can narrate that sequence and name what could go wrong at each step, you are prepared for both Domain 4-6 and Domain 10 questions.
Domains 7-9: Design, Standards, and Instruments
Domain 7: RFID System Design Selection and Installation
Practical, scenario-driven questions live here. The exam wants to see that you can match a system to a requirement.
- Choosing frequency band and tag type based on read range, environment, and throughput needs.
- Site survey ideas: identifying interference sources and reflective or absorptive materials before installing.
- Antenna placement and orientation, cable considerations, and grounding and mounting practices.
- Tradeoffs: range versus cost, speed versus accuracy.
Domain 8: RFID Standards and Regulations
This domain rewards recognition and understanding of why rules exist rather than rote recitation of every document.
- Why standards matter for interoperability between vendors.
- The role of regulatory bodies in governing allowed frequencies and power levels.
- How regional differences in spectrum rules can affect equipment selection.
Domain 9: Additional Instrumentation Used with RFID Systems
Test and measurement equipment that supports installation and diagnosis.
- What common RF test instruments measure and when you would reach for each.
- Basic interpretation of readings, such as signal strength or standing-wave indications.
- Auxiliary devices that integrate with RFID deployments, such as sensors and signaling components.
One practical note: because the competency list for Domain 9 contains the inconsistent subordinate numbering mentioned earlier, do not rely on item numbers when cross-referencing. Study by topic name instead.
Domain 10: Troubleshooting an RFID System
Troubleshooting questions tend to be the most integrative on the exam, because they pull from every earlier domain. A symptom is described, and you must reason toward the likely cause. Build a habit of working from the simplest explanation outward.
- Confirm power and connectivity: Is the interrogator powered, and is it talking to the host?
- Check the antenna path: Cable, connector, and antenna health are common culprits.
- Examine the environment: New metal, liquids, or interference sources can quietly degrade reads.
- Evaluate the tag: Orientation, damage, mounting surface, and tag type suitability.
- Review configuration: Power level, protocol settings, and anti-collision parameters.
Key Takeaway
When a troubleshooting question gives you symptoms, resist jumping to exotic causes. The exam consistently favors fundamentals: power, cabling, antenna, environment, then tag, then configuration. Eliminate in that order and the correct answer usually becomes obvious.
Test-Day Rules and Retake Mechanics
Several small rules trip up otherwise well-prepared candidates. Review them the day before.
- Photo identification is required. Bring valid ID that matches your registration.
- Phones are prohibited. Plan to keep yours out of reach.
- Scratch paper must be surrendered when you finish, so do not plan to walk out with notes.
- A non-programmable calculator is permitted, including a non-programmable scientific calculator. A programmable one is not.
- Delivery options run through ETA Certification Administrators, using Trapeza online or paper testing. Remote delivery uses ExamRoom.AI proctoring, which adds USD 16.
If the first attempt does not go your way, ETA allows one free exam retake within one year after a 30-day waiting period. The remote-proctoring fee still applies to the retake if you test remotely, so the retake is free of the exam fee but not necessarily free of every charge. For scheduling specifics, see our RFID exam dates guide, and for a realistic read on difficulty, how hard the RFID exam is.
Keeping the Credential Current
Passing is the start of a four-year cycle. To maintain the credential you need either 10 related continuing-education hours per year (40 per four-year cycle) or employer verification, plus USD 25 annually (USD 100 per cycle). Renewal details live on ETA's maintenance page, so check there before your cycle ends.
There is also an optional upgrade path. The stand-alone route to this credential does not require the Associate CET (CETa). However, an optional Journeyman upgrade does require CETa and at least two years of combined training and experience. If you are weighing whether the credential pays off for your career, our ROI analysis and salary guide cover earnings and value, and RFID jobs outlines where the skills are put to use.
A Domain-Ordered Review Schedule
You only need one structured plan, so here is a four-week arrangement built around how the domains depend on each other rather than generic study advice. The logic: lock in the RF theory first, because Domains 4 through 10 all lean on it.
Foundations and RF theory
- Domains 1, 2, and 3. Spend the most time on dB math, wavelength, and near-field versus far-field.
- Drill calculator-based problems until they are automatic.
The communication chain
- Domains 4, 5, and 6. Build your tag-type comparison table.
- Practice narrating one full read event from interrogator to host.
Applying it
- Domains 7, 8, and 9. Work design scenarios and review standards and regulatory roles.
- Learn what each test instrument measures.
Integration and practice
- Domain 10 plus full-length timed practice using our practice tests.
- Revisit your weakest domain and rehearse the test-day rules.
For a fuller study framework, see the RFID study guide, and when you are ready to measure yourself against exam-style questions, start with the RFID practice exams. Candidates curious about outcomes can also review what the data shows in our pass rate article.
Frequently Asked Questions
ETA International (ETA) issues it. It is a distinct credential from RFID programs offered by other bodies, and fees and content from those do not apply to the ETA exam.
The exam has 75 questions and a two-hour time limit. You need a 75% to pass, and there is no hands-on assessment, so it is entirely a knowledge examination.
The verified ETA exam fee is USD 105. If you test remotely with ExamRoom.AI proctoring, add USD 16 for this two-hour exam. A lower figure seen on an ETA Press mirror page could not be confirmed and should not be used for budgeting.
No. The stand-alone route does not require CETa. Only the optional Journeyman upgrade requires CETa plus at least two years of combined training and experience.
ETA publishes no percentage weights, so prepare for all ten domains. A non-programmable calculator, including a non-programmable scientific model, is permitted, but phones are prohibited and scratch paper must be surrendered.