VoltExam Blog
Trade Exam Study Guides
Practical guides for passing your certification exam on the first try.
Notary Public Commission Exam: All 50 States Requirements and Practice
Learn what the Notary Public Commission Exam tests in all 50 states, how to prepare, and what requirements you need to meet to get commissioned.
Real Estate License Exam: What Every State Actually Tests
Discover exactly what the real estate license exam tests in every state — national vs. state sections, key topics, pass rates, and how to study smarter.
Plumber License Exam: Journeyman vs. Master Requirements by State
Journeyman vs. master plumber license exam — learn what each state requires, key topics tested, study strategies, and how to pass your plumbing exam on the first try.
5 Best Journeyman Electrician Exam Prep Apps in 2026
A comprehensive review of the top journeyman electrician exam prep apps in 2026, comparing VoltExam, 1 Exam Prep, Mike Holt's, Dakota Prep, and Pocket Prep.
How to Pass the CDL Hazmat Endorsement Test: A Complete Study Guide
A practical guide to passing the CDL Hazmat endorsement — what the test covers, the 9 hazard classes, placarding rules, and a proven 2-4 week study timeline.
How Many Questions Are on the CDL Hazmat Endorsement Test?
The CDL Hazmat endorsement test has 30 questions in most states. Learn exactly what topics are covered, the pass score, and the fastest way to prepare.
Journeyman Electrician Exam Pass Rate — What to Expect in 2026
The journeyman electrician exam pass rate is roughly 50–70% on the first attempt depending on state and exam provider. Here's what drives failures and how to beat the odds.
CWI vs. CAWI — Which Welding Certification Should You Get?
CWI (Certified Welding Inspector) and CAWI (Certified Associate Welding Inspector) both come from AWS. Here's exactly what each requires, what each pays, and which to pursue first.
OSHA 30 vs. OSHA 10 — What's the Difference and Which Do You Need?
OSHA 30 and OSHA 10 are the two most recognized construction safety credentials. Here's exactly what each covers, how long each takes, and which one most employers actually require.
How Long Should You Study for the Real Estate License Exam?
Most first-time real estate exam passers study for 2–4 weeks after completing pre-licensing coursework. Here's exactly how to structure your study time to pass on the first attempt.
ASE Certification Cost Breakdown — All 8 Tests and What Each Covers
ASE A1–A8 certification tests cost $36–$75 per test depending on whether you use a voucher. Here's the full cost breakdown, what each test covers, and the fastest path to becoming ASE certified.
Pesticide Applicator License Requirements by State — What You Need to Know
Pesticide applicator license requirements vary significantly by state. Here's what the federal law requires, how state requirements differ, and the exam topics that appear in every state.
Crane Operator Exam Study Tips — How to Pass NCCCO on the First Try
The NCCCO crane operator certification has written and practical exam components. Here's exactly what the written tests cover and the study approach that produces the highest first-attempt pass rates.
Phlebotomy Certification Guide — What You Need to Know About the NHA CPT Exam
The NHA CPT (Certified Phlebotomy Technician) exam is 100 questions with a 390-minute time limit. Here's exactly what it tests, how to prepare, and what phlebotomy certification actually gets you.
Trade Certification Apps Compared — VoltExam vs. Pocket Prep vs. Others
An honest comparison of the major trade exam prep apps in 2026: VoltExam, Pocket Prep, Dakota Prep, and SkillCat. What each covers, what each costs, and which is worth your money.
How to Pass the Journeyman Electrician Exam on the First Try (NEC 2026)
Pass the journeyman electrician exam on your first attempt. Study strategies, NEC 2026 key topics, common mistakes, and the best practice test app.
How to Pass the EPA 608 Exam — Complete Study Guide (All 4 Sections)
Everything you need to pass the EPA 608 certification exam — Core, Type I, Type II, and Type III. Refrigerant rules, freon phase-out timeline, and 5 practice questions included.
How to Pass the CPO Exam (Certified Pool Operator) — Complete Study Guide
Everything you need to pass the PHTA Certified Pool Operator exam — water chemistry formulas, chlorine dosing math, filtration rules, and the most-tested CPO topics. Includes 5 practice questions.
Journeyman Plumber Exam: IPC Practice Test Questions & Study Guide
Five real-style IPC practice questions with detailed answers, plus a breakdown of what the journeyman plumber exam actually tests — pipe sizing, DFU calculations, venting, and more.
How to Pass the ASE A1 Engine Repair Certification Exam
A practical guide to the ASE A1 Engine Repair exam — task list breakdown, Technician A/B questions, top study strategies, and what experienced mechanics most commonly miss.
VoltExam vs Dakota Prep: Which Electrician Exam Prep App is Better in 2026?
An honest comparison of VoltExam Electrician Prep and Dakota Prep for the NEC journeyman and master electrician exam — pricing, features, question quality, and which one fits your situation.
How to Get Your Electrician License in Texas — Requirements, Costs & Steps
Complete 2026 guide to Texas electrician licensing through TDLR: apprentice, journeyman, and master requirements, exam fees, and how to pass the NEC test.
How to Get Your CDL Hazmat Endorsement in California — Requirements, Costs & Steps
Complete 2026 guide to California's CDL Hazmat endorsement: ELDT training, TSA background check, DMV knowledge test, and total costs from start to finish.
How to Pass the Backflow Tester Certification Exam in 2026
A complete study guide for the backflow prevention assembly tester certification exam — DC, RPZ, PVB, and SVB test procedures, PSID thresholds, and common mistakes that fail candidates.
How to Pass the Pesticide Applicator License Exam in 2026
A practical study guide for the pesticide applicator certification — core exam topics, mix rate math, label reading, and state-specific category exams.
How to Pass the NHA CPT Phlebotomy Exam on Your First Try
A practical study guide for the NHA Certified Phlebotomy Technician exam — what to know, how to memorize the order of draw, and the biggest mistakes test-takers make.
How to Pass the ASE A1–A8 Mechanic Certification Exams in 2026
Everything you need to know about the ASE automotive technician certification exams — how they're structured, what each series covers, and the fastest way to pass all 8.
How to Pass the OSHA 30-Hour Construction Safety Exam in 2026
A straight-to-the-point guide to earning your OSHA 30 card — what topics are covered, how the exam works, and the study approach that actually works for busy tradespeople.
How to Pass the HSPA CRCST Sterile Processing Exam in 2026
A complete study guide for the CRCST certification — decontamination, sterilization parameters, sterile storage, and the exact topics that show up most on the exam.
EPA 608 Type II Exam: Practice Questions and Key Topics
The EPA 608 Type II exam covers high-pressure refrigerants like R-22 and R-410A. Here are sample questions and the 5 topics every HVAC tech must know cold.
NEC 2023 vs 2020: What Changed and What's Actually on Your Exam
A focused comparison of NEC 2023 and 2020 changes that affect the journeyman and master electrician exam — AFCI expansion, GFCI updates, EV charging rules, and more.
NREMT EMT Exam Pass Rate in 2026: Why Candidates Fail and How to Prepare
The NREMT EMT-Basic certification has a first-time pass rate around 67-70%. Here's what the CAT format tests, the most-failed topics, and a focused study plan.
FAA Part 107 Exam Pass Rate and the 10 Topics That Determine If You Pass
The FAA Part 107 Remote Pilot Certificate exam has a pass rate around 85%. Here are the 10 topic areas, which ones most candidates fail, and how to study efficiently.
Notary Public Exam: Which States Require It and What It Covers
Most states don't require a notary exam — but 15+ do. Here's which states test notaries, what the exam covers, and how to get commissioned quickly.
AWS CWI Exam: What to Expect on Each of the Three Parts
The AWS Certified Welding Inspector exam is three separate tests taken on the same day. Here's exactly what each part covers and how candidates fail.
Security Guard License Exam: What to Study State by State
Security guard licensing requirements vary dramatically by state. Here's what the written exam covers, how many hours of training are required, and which states are the hardest.
How Long Should You Study for the Real Estate License Exam?
Most real estate license candidates study 40-80 hours total. Here's a realistic study timeline, what to focus on, and how to avoid the most common fail points.
NCCCO Crane Operator Exam: Pass Rate, Difficulty, and What to Expect
The NCCCO written exam has a first-time pass rate around 55-65%. Here's what's actually on it, why candidates fail, and how to prepare effectively.
How Hard Is the OSHA Forklift Certification? What the Test Actually Covers
The OSHA forklift certification test is straightforward if you understand what's actually being evaluated. Here's what the written test covers and how the practical evaluation works.
How Many Questions Are on the Journeyman Electrician Exam?
The NEC journeyman electrician exam typically has 80–100 multiple-choice questions. Here's exactly what's on it, how long it takes, and what the hardest sections are.
CDL Hazmat Endorsement Pass Rate: How Hard Is the Test?
The CDL hazmat endorsement knowledge test has a national first-time pass rate around 70-75%. Here's what makes people fail and how to pass on the first try.
How to Pass the ServSafe Manager Certification Exam
A complete study guide for the ServSafe Food Protection Manager exam — exam format, temperature danger zone, the 7 HACCP principles, cooling requirements, and proven study strategies.
AWS CWI Exam Study Guide: How to Pass the Certified Welding Inspector Exam
Complete guide to the AWS Certified Welding Inspector (CWI) exam — the three-part structure, Part B code book open-book strategy, and how to prepare for Part A and Part C.
How to Pass the NCCCO Crane Operator Certification Exam
A complete guide to NCCCO crane operator certification — the written exam, practical exam, load chart reading, rigging math, and how to prepare for each section.
OSHA Forklift Certification: What It Covers and How to Get Certified
Complete guide to OSHA forklift operator certification — the types of powered industrial trucks, operator training requirements, load capacity calculations, and what the certification test actually covers.
Security Guard License Exam Study Guide
How to pass the security guard license exam — what state exams cover, use-of-force law, report writing, emergency procedures, and how to prepare for your state's test.
How to Become a Notary Public: Exam, Application, and Bond Guide
Everything you need to know to become a notary public — state exam requirements, application steps, surety bond, journal requirements, and what the notary exam actually tests.
How to Pass the Journeyman Plumber License Exam
A practical guide to passing the journeyman plumber exam — IPC vs. UPC codes, calculation questions, and the state-by-state licensing process every plumber needs to understand.
How to Pass the Real Estate License Exam on Your First Try
A complete guide to the real estate salesperson license exam — what's covered, how to calculate commission and proration, and how to prepare for both the national and state portions.
FAA Part 107 Study Guide: Pass the Remote Pilot Certificate Exam
Complete study guide for the FAA Part 107 Remote Pilot Certificate exam — airspace, weather, regulations, and everything else tested on the knowledge test.
NREMT Exam Study Guide: How to Pass EMT Certification
Everything you need to know about the NREMT computerized adaptive test — how the CAT algorithm works, what to study, and how to avoid the most common mistakes.
EPA 608 Study Guide: Everything HVAC Technicians Need to Know
Complete EPA 608 study guide covering all four certification types, core section topics, and the fastest way to pass and get your HVAC certification.
How to Pass the Journeyman Electrician Exam on Your First Try
A practical, no-fluff guide to passing the journeyman electrician exam — what to study, how to read the NEC, and the mistakes most test-takers make.