100+ Free ALOA CPL Practice Questions

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ALOA does not publish module-level pass rates; master keying, codes, and safes are historically the most challenging modules Pass Rate

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On a Schlage depth-and-space chart, what do the 'depths' represent?

The spacing between pin stacks along the cylinder

The root depths of cuts on the key blade corresponding to bitting numbers

The overall length of the key blank

The diameter of the cylinder plug

to track

2026 Statistics

Key Facts: ALOA CPL Exam

Mandatory PRP Modules

ALOA CPL requirement (plus required electives)

~30-50

Questions per Module

ALOA Proficiency Registration Program

~10%

Master Keying Weight

Largest PRP content area for CPL

~$125-$350

2026 Initial PRP Fee

ALOA (verify current schedule)

~$50

Per-Module Retake Fee

ALOA PRP retake policy

1-2+ yr

Recommended Experience

Bench time before attempting CPL modules

The ALOA CPL is a module-based certification from the ALOA Security Professionals Association Proficiency Registration Program (PRP). Candidates must pass 12 mandatory modules plus required electives; each module is a ~30-50 MCQ computer-based test administered at ALOA Convention, regional ACE classes, and authorized chapter sites. Content spans master keying (~10%), cylinder servicing (~10%), lockset function (~8%), impressioning (~8%), codes (~8%), high-security (~6%), safe locks (~6%), automotive (~5%), access control (~5%), and building/fire codes (~5%). Initial PRP fees run ~$125-$350 with ~$50 per module retake. ALOA membership is required.

Sample ALOA CPL Practice Questions

Try these sample questions to test your ALOA CPL exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1On a Schlage depth-and-space chart, what do the 'depths' represent?

A.The spacing between pin stacks along the cylinder

B.The root depths of cuts on the key blade corresponding to bitting numbers

C.The overall length of the key blank

D.The diameter of the cylinder plug

Explanation: A depth-and-space chart lists two values: depths (root dimension of each cut corresponding to a bitting number, e.g., Schlage 0 = .335") and spaces (distance from shoulder/tip to each cut position). Both are needed to originate a key by code.

2A 'direct' key code is one that:

A.Must be looked up in a code book before cutting

B.Represents the actual bitting cuts and can be cut directly on the machine

C.Is encrypted and requires a software unlock

D.Can only be cut by the factory

Explanation: A direct (or 'direct digit') code IS the bitting — e.g., '24531' means cut depths 2-4-5-3-1. An indirect code (blind code) is a reference number that must be translated via a code book or software before cutting.

3A Medeco sidebar code specifies:

A.Only the depth of each cut

B.Only the spacing of the cuts

C.The angle/rotation of each bottom pin's chisel tip (e.g., L, C, R)

D.The length of the key blade

Explanation: Medeco Biaxial/Original keys use angled cuts; the sidebar code lists the rotation for each pin (left/center/right, or 0/+/-) so the bottom pins align their true gates with the sidebar. A full Medeco bitting needs depth, spacing, AND angle data.

4The MACS (Maximum Adjacent Cut Specification) for a keyway tells the locksmith:

A.The maximum key length

B.The greatest allowable depth difference between two adjacent cuts

C.The minimum master pin size

D.The number of pin chambers

Explanation: MACS limits how steep the cut-to-cut transition can be without the milling cutter destroying the neighboring cut or the key ramp failing to lift pins. Violating MACS produces a key that either cannot be cut cleanly or fails to raise pins reliably.

5What is the standard Schlage 5-pin depth increment?

A..015 inch

B..005 inch

C..020 inch

D..050 inch

Explanation: Schlage uses a .015" depth increment (root 0 = .335", root 9 = .200"). This increment also dictates master pin sizing — a master pin equals the difference between two bittings times .015".

6An HPC 1200CM code machine cuts by code using which primary reference?

A.A pattern key clamped beside the blank

B.Interchangeable depth-and-space cards for specific lock manufacturers

C.A laser scan of the lock

D.A wireless connection to the factory

Explanation: HPC 1200-series machines use card-guided code cutting: a CW/CF card indexes spacing (via slots) and depth (via steps) for a specific manufacturer/keyway. Choosing the wrong card produces wrong cuts.

7A 'blind code' for a Ford 10-cut ignition typically needs to be:

A.Cut directly as given

B.Looked up in a code book or software (e.g., InstaCode) to obtain actual bitting

C.Ignored — VIN is used instead

D.Doubled before cutting

Explanation: Automotive key codes are almost always blind (indirect). The locksmith translates the blind code to a direct bitting via InstaCode, Genericode, factory code books, or the dealer's system before cutting.

8When originating a Schlage C keyway key by code 12345, the FIRST cut (position 1) is nearest to:

A.The tip of the key

B.The shoulder (bow end) of the key

C.The middle of the blade

D.The bow cutout

Explanation: Schlage numbers cuts from the shoulder: position 1 is closest to the bow/shoulder, position 5 is nearest the tip. This is the reverse of some European systems, so confirming the manufacturer's orientation is essential.

9Before disassembling a Schlage pin-tumbler cylinder, the FIRST action is to:

A.Remove the bottom pins with a pick

B.Insert the operating key and install a follower to keep the top pins/springs contained

C.Drill the cylinder

D.Remove the shear line

Explanation: Insert the key to align pins at the shear line, retain the cylinder in a vise or hand, remove the cap/C-clip, and slide a follower behind the plug as you push it out. The follower prevents top pins and springs from escaping.

10A pinning chart column marked 'TMK' stands for:

A.Top Master Key

B.Temporary Master Key

C.Total Master Key

D.Tool Master Kit

Explanation: TMK = Top Master Key, the highest-level key that operates every cylinder in the system. SKD = Single Key Differs, CK = Change Key, MK = (sub)Master Key. On a pinning chart these columns dictate bottom pin plus master pin stacks.

About the ALOA CPL Exam

The ALOA Certified Professional Locksmith (CPL) is earned through the ALOA Proficiency Registration Program (PRP), a module-based certification that validates hands-on locksmith competency. The CPL requires passing 12 mandatory modules plus a required number of elective modules. Content spans master keying (Total Position Progression, MACS, bitting arrays), cylinder servicing and rekeying, lockset function (ANSI/BHMA A156 F-series — F75/F76/F80/F82/F86), impressioning, key codes and code machines (HPC, Framon, ITL), key blank identification (Ilco/JMA cross-references; Medeco, ASSA, Mul-T-Lock, Abloy, BEST restricted keyways), key duplication, high-security locks, safe locks (Group 2/2M mechanical and electronic), automotive locksmithing (wafer, transponder, laser-cut), electronic access control (electric strikes, maglocks, Wiegand/MIFARE/iCLASS), building and fire codes (NFPA 101, ADA, IBC, UL 305/10C), ethics, safety, and forensic locksmithing. ALOA membership and 1-2+ years of locksmith experience are strongly recommended.

Questions

100 scored questions

Time Limit

Module-based CBT at ALOA Convention and ACE classes; each module ~30-50 MCQs

Passing Score

Pass each module at the ALOA-defined cut score (typically ~70%) for all 12 mandatory modules plus required electives

Exam Fee

~$125-$350 initial PRP testing fees plus ~$50 per module retake (ALOA 2026 — verify current schedule) (ALOA Security Professionals Association)

ALOA CPL Exam Content Outline

~10%

Master Keying

Total Position Progression (TPP), rotating constant, standard progression, key bitting arrays, maisonkey/grand master/great grand master hierarchies, selective key systems, MACS (maximum adjacent cut specification), pin interchange and cross-keying risk, SKD (single key different), key control and patented keyway systems.

~10%

Cylinder Servicing

Pin tumbler cylinder construction (bottom/master/top driver pin, spring, plug, shell), rekeying (reading existing cuts, combinating to new key), shimming and picking detection, mushroom/spool/serrated security pins, Schlage/Kwikset/Corbin Russwin keyway profiles, tailpieces and cams, IC core (SFIC/LFIC) operation and control-key function.

~8%

Lockset Function (ANSI F-series)

ANSI/BHMA A156 function designations — F75 (passage/closet latch), F76 (privacy/bed-bath), F80 (cylindrical classroom/office), F82 (storeroom), F86 (entrance/office), F88 (institutional), exit device functions, deadbolt grades, single- vs double-cylinder applications with life-safety/code restrictions, handedness (LH/RH/LHR/RHR).

~8%

Impressioning

Creating a working key by progressively marking and filing a blank — blank selection (correct keyway, uncut), proper grip and rocking torque, reading marks under magnification, filing depth increments, use of micrometer/depth gauge, impressioning with Swiss-pattern files, difference between impressioning and decoding, and when to switch to disassembly/rekey.

~8%

Codes & Code Machines

Direct vs indirect codes, bitting list interpretation, key gauges and depth-and-spacing charts (Schlage C, Kwikset KW1, SC1), code cutting machines (HPC 1200CMB, Framon #2, ITL 9700/950C), origination of keys by code, security/blind codes requiring factory authorization, DSD numbers and key manufacturer code books.

~6%

Key Blank Identification

Manufacturer keyway profiles and cross-references (Ilco, JMA, Silca), restricted/patented keyways (Medeco, ASSA, Mul-T-Lock, Abloy Protec2, BEST), bow shapes and tip/shoulder-stop orientation, blank catalogs (Ilco/Curtis), warded vs tumbler blanks, automotive transponder blanks (TPX, HU64, HU92).

~6%

Key Duplication

Mechanical key duplicators (HPC Punch, Ilco 008A, Curtis clippers), laser/dimple duplication (Silca Futura, Triax), correct blank-stop alignment (tip-stop vs shoulder-stop), deburring, quality control (inspect original vs copy under magnification), key gauges, authorization requirements for duplication of high-security/restricted keys.

~6%

High-Security Locks

Medeco (ARX/Biaxial — elevating and rotating bottom pins on a sidebar), ASSA/Twin/Twin Exclusive, Mul-T-Lock Interactive/MT5+ (telescoping pin-in-pin and alpha spring), Abloy Protec2 (rotating disc detainer), BEST IC cores, UL 437 listing, attack resistance (pick, bump, drill, impressioning), patented keyway and key-control programs.

~6%

Safe Locks & Servicing

Group 1/Group 2/Group 2M mechanical combination locks (Sargent & Greenleaf 6730, LaGard 3330), electronic safe locks (S&G 6120/Z03, LaGard 39E, Kaba Mas X-10), drive cam/fence/wheel pack design, change-key combination changing, manipulation basics (contact points, amplification), drilling as last resort, UL standards (RSC, TL-15, TL-30), GSA containers (X-09/X-10).

~5%

Automotive Locksmithing

Wafer tumbler locks (sidebar, double-sided), reading cuts from door/trunk/ignition, picking and decoding, transponder systems (fixed-code, rolling-code, Hitag2, DST40/DST80), key cloning vs OEM onboard programming, EEPROM and bypass, VATS resistor keys, remote/FOB programming, laser-cut high-security (HU66, HU92, HU100).

~5%

Electronic Access Control

Electric strikes (fail-safe vs fail-secure), electromagnetic locks and life-safety REX egress requirements (motion, touch bar, push button), credential technologies (125 kHz HID/EM prox, MIFARE 13.56 MHz, iCLASS, smart cards), Wiegand protocol, door position switches, request-to-exit devices, stand-alone vs networked access control.

~5%

Building & Fire Codes

NFPA 101 Life Safety Code egress (single operation, no key required from inside), ADA operable-force and lever-handle requirements, IBC means of egress, panic/fire exit hardware (UL 305, UL 10C), delayed egress (15-second rule), double-cylinder deadbolt restrictions, door closer requirements on fire-rated openings.

~5%

Rekeying & Servicing

Reading keys with decoder or micrometer, combinating new pin stacks, removing cylinders from knobs/levers/deadbolts (Schlage, Kwikset, Yale, Sargent, Corbin Russwin, Arrow), IC core replacement and control-key operation, lubrication (graphite vs PTFE dry lube vs avoid wet oils), key-in-knob vs mortise service.

~4%

Ethics & Professional Practice

ALOA Code of Ethics, customer identity verification before service (vehicle registration, photo ID, proof of ownership/residency), key control and restricted-keyway authorization letters, record keeping, lawful service (no service on court-contested property), continuing education, scope of practice and when to refer.

~4%

Safety & Tools

PPE (eye protection during impressioning/drilling), drill motor selection and bit materials (carbide for hardplate), lockout/tagout on commercial work, ladder safety for door closers, electrical safety with maglocks/electric strikes, correct use of picks/tension wrenches, bypass tool limits (under-door, shove-knife), hand-tool maintenance.

~4%

Forensic Locksmithing

Evidence preservation (photograph lock in situ, chain of custody, bagging and tagging), signs of covert entry (pick marks, bump marks, tool-induced wear on pins), overt entry (drilling, prying, bolt-cutting), microscopy and comparative analysis, report writing, working with law enforcement, distinguishing key-operated from manipulation attacks.

How to Pass the ALOA CPL Exam

What You Need to Know

Passing score: Pass each module at the ALOA-defined cut score (typically ~70%) for all 12 mandatory modules plus required electives
Exam length: 100 questions
Time limit: Module-based CBT at ALOA Convention and ACE classes; each module ~30-50 MCQs
Exam fee: ~$125-$350 initial PRP testing fees plus ~$50 per module retake (ALOA 2026 — verify current schedule)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

ALOA CPL Study Tips from Top Performers

1Total Position Progression (TPP) master keying: with 10 depths and 2-step progression, a 5-pin system yields 5^5 = 3,125 potential change keys, but MACS (Maximum Adjacent Cut Specification — typically 4-7 depending on manufacturer) limits cuts between adjacent positions. Always verify MACS before generating a bitting list — a cut pair violating MACS can cause the key to bind or fail, and certain pin combinations create unintended cross-keys (incidental master keys).

2ANSI/BHMA A156 F-series functions — memorize the common ones: F75 passage (latch, no lock), F76 privacy bed-bath (push-button/thumb-turn with emergency release), F79 communicating, F80 classroom/office (key outside, always free egress inside), F82 storeroom (always locked outside, key retracts latch; free egress), F86 entrance/office (key outside, locked or unlocked by inside turn-button), F88 dormitory/institutional. Never install a double-cylinder deadbolt where NFPA 101 or IBC requires single-operation egress.

3Pin-tumbler rekey workflow: (1) remove cylinder and mark orientation, (2) remove plug with follower (keep springs and top pins captive in shell), (3) read old key or gauge existing bottom pins, (4) select new key, gauge cuts with decoder or micrometer, (5) load new bottom pins to match the new key's bitting, (6) reinstall plug with new key inserted, (7) test function before reinstalling in lock. Use graphite or PTFE dry lubricant only — never use WD-40 or household oil, which gum up over time.

4Impressioning step-by-step: (1) select correct blank (right keyway, uncut), (2) insert fully, apply light rotational torque both directions while gently rocking up/down, (3) remove blank and examine each position under magnification for marks, (4) file each marked position slightly deeper (one increment), (5) deburr, polish with #000 steel wool, blacken with smoke or marker if needed, (6) repeat until key turns. A well-made impressioned key is indistinguishable from a code-originated key.

5High-security lock architectures — key recognition pearls: Medeco uses elevating-and-rotating bottom pins that must lift AND rotate to proper angle to align the sidebar — look for angled cuts on the key. ASSA Twin uses a separate side-bitted sidebar with a second row of cuts. Mul-T-Lock MT5+ uses pin-in-pin telescoping construction plus an alpha-spring floating pin and movable element. Abloy Protec2 uses rotating disc detainers (not pins) with a half-moon shaped key — there are no pins or springs in the traditional sense.

Frequently Asked Questions

What is the ALOA Certified Professional Locksmith (CPL)?

The CPL is earned through the ALOA Security Professionals Association Proficiency Registration Program (PRP). It is a module-based certification requiring candidates to pass 12 mandatory modules plus a required number of elective modules. The CPL demonstrates broad locksmith competency across residential, commercial, automotive, safe, high-security, and electronic access control work.

Who is eligible to take the PRP modules for CPL?

Candidates must be ALOA members in good standing at the time of testing. There is no formal education prerequisite, but 1-2+ years of practical locksmith experience is strongly recommended. Many candidates build bench time through ALOA-sponsored ACE classes, manufacturer training (Medeco, ASSA, Mul-T-Lock), and on-the-job work before sitting for modules.

What is the format of the PRP exam?

PRP modules are computer-based tests administered at the ALOA Convention, regional ACE classes, and authorized ALOA chapter testing sites. Each module contains approximately 30-50 single-best-answer multiple-choice questions on a specific subject area (for example master keying, impressioning, safes, automotive). Candidates typically complete modules across multiple sessions rather than all in one sitting.

How much does the 2026 PRP cost?

Initial PRP testing fees run approximately $125-$350 depending on member status and number of modules attempted — always verify the current ALOA schedule. Failed modules can be retaken for approximately $50 per module. Members receive substantially reduced rates compared to non-members, and ALOA membership dues apply.

When are PRP modules administered?

Modules are offered annually at the ALOA Convention each summer, at regional ACE training events throughout the year, and at authorized ALOA chapter testing sites. Candidates should check the ALOA education calendar for upcoming testing opportunities and register in advance.

How is the PRP scored?

PRP uses criterion-referenced scoring at the module level with a defined cut score (typically around 70%) set by ALOA subject-matter experts. A candidate must pass each required module individually; performance on other candidates does not affect the result. Earning the CPL requires passing all 12 mandatory modules plus the required number of elective modules.

What are the highest-yield topics?

Highest-yield topics include Total Position Progression (TPP) master keying with MACS limits, pin-tumbler rekeying and security pins, ANSI/BHMA A156 F-series function designations (F75/F76/F80/F82/F86), impressioning technique with Swiss-pattern files, direct vs indirect codes and code-machine setup (HPC 1200CMB, Framon #2, ITL), key blank identification (Ilco/JMA cross-references), high-security architectures (Medeco Biaxial, ASSA Twin, Mul-T-Lock MT5+, Abloy Protec2), Group 2/2M safe lock servicing, automotive transponder systems (Hitag2, DST40/80), and NFPA 101/ADA egress requirements.

How should I study for the PRP?

Use a structured 6-12 month plan layered on daily locksmith work. Begin with fundamentals (pin tumbler cylinders, rekeying, blank ID, duplication), then master keying, codes and impressioning, then high-security, safes, and automotive, and finish with access control, life-safety codes, and ethics. Use ALOA ACE classes, the Keynotes magazine, manufacturer training (Medeco/ASSA/Mul-T-Lock/Abloy), Truini's Professional Locksmithing Techniques, and high-volume MCQ practice. Complete 2-3 full-length timed module-style mock tests before sitting for the real modules.