Skilled Trades Exam Prep: Practice Questions and Study Guides
CDL, OSHA, and trade certifications. Browse grouped exam families, then open the exact practice questions, study guide, flashcards, or related resource for your credential.
Last updated Jun 2, 2026 · 1,043 exams indexed
1043
Exams
70
Families
1043
Practice Pages
120,444
Practice Questions
What You'll Find in Skilled Trades
Skilled Trades is organized as a domain hub first, then split into exam families and exact exam pages so candidates can move from broad category to the right credential quickly.
Exam Coverage
1,043 exams are grouped into 70 exam families with national, vendor, credential, and state variants kept together where applicable.
Practice Questions
Resource cards link directly to free practice questions when a question bank exists for the exam, alongside study guides, flashcards, course links, blog articles, glossary terms, and comparisons.
Hub Structure
Domain pages help users and search engines understand the category. Family pages handle related exam variants, and individual exam pages handle exact study or practice workflows.
Exam Families
Family hubs group related national, vendor, credential, and state exam variants.
Pesticide Applicator
Pesticide applicator exam prep with state licensing guides, practice questions, flashcards, and coverage for labels, safety, application methods, pests, environmental protection, and regulations.
Water / Wastewater Operator
Water and wastewater operator exam prep with certification guides, practice questions, flashcards, and coverage for treatment processes, distribution, collections, math, safety, and regulations.
Asbestos Abatement
Asbestos Abatement licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for hazard identification, EPA regulations, personal protective equipment, containment procedures, waste disposal, and air monitoring.
Plumber License
Plumber licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for plumbing code, drainage, venting, water supply, fuel gas, and safety.
ICC Certifications
ICC certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for building inspection, plans examination, electrical systems, mechanical systems, plumbing, energy conservation, and fire safety.
Fire Alarm Installer
Fire Alarm Installer licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for NFPA 72, circuit design, initiating devices, notification appliances, system wiring, inspection, and testing.
Fire Sprinkler Contractor
Fire Sprinkler Contractor licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for NFPA 13 code, system design, hydraulic calculations, pipe sizing, installation methods, and inspection requirements.
Electrician License
Electrician licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for code, wiring methods, calculations, safety, and electrical theory.
NCCER Certifications
NCCER trade certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for core curriculum, tools and safety, rigging and material handling, blueprint reading, mechanical systems, and trade-specific skills.
HVAC Contractor License
HVAC contractor licensing exam prep with trade guides, practice questions, flashcards, and coverage for heating, cooling, refrigeration, load calculations, codes, and safety.
General Contractor License
General contractor licensing exam prep with state guides, practice questions, flashcards, and coverage for construction law, project management, estimating, safety, contracts, and building codes.
Funeral Director Jurisprudence
Funeral Director Jurisprudence exam prep with state licensing guides, practice questions, flashcards, and coverage for state funeral laws, licensing requirements, preneed regulations, consumer protection, recordkeeping, facility standards, and ethics.
Low Voltage Contractor
Low Voltage Contractor licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for cabling standards, structured wiring, fire alarm systems, security systems, AV installations, and NEC low-voltage rules.
Well Driller / Pump Installer
Well Driller and Pump Installer licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for drilling methods, well construction, pump installation, water quality, grouting, and state regulations.
AMPP Certifications
AMPP corrosion and cathodic protection certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for corrosion science, cathodic protection design, inspection methods, coatings, electrochemistry, and failure analysis.
ACI Concrete Certifications
ACI Concrete certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for concrete testing, mix design, field inspection, shotcrete application, structural repair, and quality control procedures.
ABC Water Operator Certification
ABC water operator certification prep with study guides, practice questions, flashcards, and coverage for water treatment, distribution, wastewater treatment, collections, math, and safety.
American Welding Society Certifications
American Welding Society certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for weld quality, inspection methods, codes and standards, metallurgy, welding processes, and safety.
Landscape Contractor License
Landscape Contractor License exam prep with trade and licensing guides, practice questions, flashcards, and coverage for plant identification, irrigation systems, grading, pest management, business law, and landscape construction.
Roofing Contractor License
Roofing Contractor licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for roofing systems, materials, flashing, codes, safety regulations, and contractor business law.
Boiler Operator
Boiler Operator licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for boiler construction, steam systems, fuel combustion, safety controls, water treatment, and pressure vessel regulations.
IICRC Certifications
IICRC restoration and cleaning certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for water damage restoration, mold remediation, fire and smoke restoration, structural drying, odor control, and carpet cleaning.
NICET Certifications
NICET certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for fire alarm systems, water-based suppression, construction inspection, materials testing, special hazards, and system layout.
API Inspector Certifications
API Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for pressure vessel inspection, piping systems, risk-based inspection, welding metallurgy, corrosion mechanisms, and pipeline construction.
InterNACHI Home Inspector Certification
InterNACHI Home Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for structural systems, roofing, electrical, plumbing, HVAC, mold detection, and environmental hazards.
NCCCO Crane Operator Certifications
NCCCO Crane Operator certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for load charts, rigging fundamentals, crane inspection, signal communication, safety regulations, and operational controls.
ASNT NDT Certifications
ASNT NDT certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for ultrasonic testing, radiographic testing, magnetic particle testing, liquid penetrant testing, visual testing, and eddy current testing.
BPI Building Performance Certifications
BPI Building Performance certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for building science principles, energy auditing, air leakage testing, HVAC systems, envelope diagnostics, and health and safety.
Elevator Mechanic License
Elevator Mechanic licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for ASME A17.1 code, electrical systems, hydraulic systems, safety devices, wiring diagrams, and installation procedures.
NABCEP Certifications
NABCEP solar and energy storage certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for PV system design, installation safety, commissioning, energy storage, system inspection, and technical sales.
USCG Captain Licenses
USCG Captain license exam prep with trade and licensing guides, practice questions, flashcards, and coverage for navigation rules, chart reading, vessel safety, stability, fire and emergency procedures, and STCW requirements.
ACAC Mold Certifications
ACAC indoor air quality and mold certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for mold inspection, microbial remediation, indoor environmental assessment, air sampling, health effects, and remediation protocols.
ASSE Plumbing Certifications
ASSE plumbing and medical gas certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for backflow prevention, cross-connection control, medical gas systems installation, fire protection piping, and program administration.
NRCA Roofing Certifications
NRCA roofing certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for asphalt shingle installation, low-slope membrane systems, metal roofing, modified bitumen, tile installation, and flashing techniques.
AACE Certifications
AACE certification exam prep with certification guides, practice questions, flashcards, and coverage for cost estimating, project planning and scheduling, earned value management, risk analysis, forensic claims, and project controls.
CDL
CDL exam prep with permit and endorsement guides, practice questions, flashcards, and coverage for general knowledge, air brakes, combination vehicles, hazmat, passenger, and school bus topics.
CTEF Tile Installer Certification
CTEF tile installer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for substrate preparation, waterproofing membranes, mortar beds, grout application, large-format tile, and shower receptor installation.
Irrigation Association Certifications
Irrigation Association certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for system design, hydraulics, water management, scheduling and auditing, installation practices, and agricultural and landscape applications.
Crane Operator License
Crane Operator licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for load calculations, rigging, crane inspection, safety regulations, operational signals, and state-specific code requirements.
FCC Radio Operator Licenses
FCC Radio Operator License exam prep with trade and licensing guides, practice questions, flashcards, and coverage for radio regulations, antenna theory, distress procedures, GMDSS equipment, maritime communications, and radar systems.
IMSA Traffic Signal Technician
IMSA Traffic Signal Technician certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for cabinet wiring, controller programming, vehicle detection, signal timing, communications systems, and MUTCD standards.
LEED Credentials
LEED credential exam prep with trade and licensing guides, practice questions, flashcards, and coverage for sustainable site design, energy efficiency, water use reduction, indoor environmental quality, materials, and green building operations.
AHERA Asbestos Certifications
AHERA Asbestos certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for asbestos identification, abatement procedures, inspection protocols, project design, management planning, and EPA regulations.
NALP Landscape Certifications
NALP Landscape Industry certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for horticulture, plant identification, turf management, irrigation, pesticide application, and landscape installation.
NBBI Inspector Certifications
NBBI Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for ASME boiler codes, pressure vessel inspection, in-service inspection procedures, repair standards, and safety regulations.
NEBB High-Performance Building Systems Certifications
NEBB High-Performance Building Systems certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for testing, adjusting and balancing, commissioning, building enclosure testing, sound measurement, and HVAC systems.
NIULPE Power Engineer Certifications
NIULPE Power Engineer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for boiler operation, thermodynamics, heat transfer, electrical systems, mechanical equipment, and plant efficiency.
FRA Railroad Certifications
FRA railroad certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for locomotive operation, train handling, railroad rules, signal systems, track safety, and federal operating regulations.
NETA ETT Certifications
NETA ETT Electrical Testing Technology exam prep with trade and licensing guides, practice questions, flashcards, and coverage for electrical test equipment, power system maintenance, safety standards, relay protection, switchgear, and transformer testing.
NGWA Groundwater Certifications
NGWA Groundwater certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for well drilling methods, pump installation, aquifer science, well construction standards, closed loop systems, and groundwater regulations.
SAIA Scaffold Certifications
SAIA Scaffold Competent Person certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for scaffold erection, load capacity, fall protection, tube and coupler systems, frame scaffolds, and OSHA standards.
AABC and TABB Air and Hydronic Balancing Certifications
AABC and TABB air and hydronic balancing certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for air distribution systems, hydronic balancing, fan and pump laws, psychrometrics, instrumentation, and sound and vibration testing.
Amateur Radio Licenses
Amateur Radio licensing exam prep with official handbook study guides, practice questions, flashcards, and coverage for FCC regulations, operating procedures, radio wave propagation, antenna theory, electrical principles, and safety.
EPA Lead Abatement
EPA Lead Abatement certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for lead hazard identification, abatement methods, worker safety, regulatory compliance, inspection protocols, and project design.
ISA CCST Certifications
ISA CCST Control Systems Technician certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for process measurement, instrumentation calibration, control loops, process control, documentation, and troubleshooting.
ITC Thermography Certifications
ITC Infrared Thermographer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for thermography principles, thermal imaging equipment, emissivity, heat transfer, inspection applications, and image interpretation.
PCI Concrete Certifications
PCI precast concrete certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for precast production quality, mix design, structural tolerances, inspection procedures, and plant and field auditing standards.
CISEC Sediment and Erosion Control Inspectors
CISEC Sediment and Erosion Control Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for erosion control principles, BMP installation, stormwater regulations, site inspection, and plan review.
EPA Lead Inspector and Risk Assessor
EPA Lead Inspector and Risk Assessor certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for lead-based paint regulations, inspection protocols, risk assessment, sampling methods, and HUD guidelines.
FGIA FenestrationMasters
FGIA FenestrationMasters certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for window and door products, installation methods, glazing systems, building codes, weatherization, and product performance standards.
ICRI Concrete Certification
ICRI concrete repair certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for concrete surface preparation, moisture testing, crack repair, overlay systems, material selection, and quality control.
IMSA Roadway Lighting Technician
IMSA Roadway Lighting Technician exam prep with trade and licensing guides, practice questions, flashcards, and coverage for luminaire installation, electrical safety, photometric standards, maintenance procedures, and roadway lighting design.
IMSA Signs and Markings Technician
IMSA signs and pavement markings technician exam prep with trade and licensing guides, practice questions, flashcards, and coverage for sign installation standards, pavement marking materials, work zone safety, MUTCD requirements, and field inspection.
PTI Multistrand Certifications
PTI Multistrand certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for post-tensioning systems, grouting procedures, tendon installation, structural inspection, load calculations, and safety standards.
PTI Unbonded Installer
PTI Unbonded Post-Tensioning Installer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for tendon installation, stressing procedures, anchorage systems, inspection requirements, safety practices, and ACI code compliance.
ASHI Home Inspector Certification
ASHI home inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for structural systems, roofing, electrical, plumbing, HVAC, insulation, and site conditions.
FCICA Certification
FCICA floor covering installation management certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for project management, estimating, installation standards, business operations, safety, and quality control.
MCAA Masonry Certification
MCAA National Masonry Certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for masonry materials, mortar and grout, structural systems, layout and coursing, safety standards, and quality control.
MICB Inspection Certification
MICB Certified Master Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for structural systems, roofing, electrical, plumbing, HVAC, and inspection reporting standards.
PDCA Painting Contractor Certification
PDCA Certified Painting Contractor exam prep with trade and licensing guides, practice questions, flashcards, and coverage for surface preparation, coating application, project estimating, business management, safety regulations, and paint specification standards.
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Common Questions
Where can I find free Skilled Trades practice questions?
This hub links to 1,043 Skilled Trades practice pages with 120,444+ practice questions across available exams. Start from a practice link on this page or open the exact exam card for study guides, flashcards, and related resources.
What skilled trades exams does OpenExamPrep cover?
OpenExamPrep organizes 1,043 exams across 70 exam families in Skilled Trades. Each family links to available study guides, practice questions, flashcards, blog resources, glossary terms, and comparisons.
How should I choose a skilled trades exam resource?
Start with the exam family that matches your credential or licensing path, then choose the exact exam page for your jurisdiction or certification. Family hubs group related national and state exams so candidates can compare resources without searching one exam at a time.
Are these skilled trades resources free?
Yes. OpenExamPrep study guides, practice questions, flashcards, glossary resources, and AI study support are free to access, with no credit card required for the core exam prep materials.