ALOA Certified Master Safe Technician (CMST)

On a Group 2 combination lock being manipulated, what does a flat area on the manipulation graph most likely indicate?

• AA contact point revealing the position of a wheel gate
• BDial friction from worn spline key
• CA false gate milled into the drive cam
• DThe relocker has fired

When manipulating an S&G 6730, how many wheels are typically present in the wheel pack?

• ATwo
• BThree
• CFour
• DFive

The 'Feather Touch' manipulation method relies primarily on detecting:

• AAcoustic clicks through a stethoscope
• BMinute changes in lever nose drop measured by dial feel
• CMagnetic field disturbances
• DTemperature variation on the dial ring

Major Manipulation, as described by Harry Miller, is characterized by:

• ADrilling the change key hole to read wheels visually
• BSystematic amplification of contact point differences across a test cycle
• CUsing a borescope through the dial ring
• DApplying pressure to the bolt while turning the dial

When manipulating an S&G 6741, how does the presence of a nylon drive wheel affect technique compared to an all-brass 6730?

• AIt makes contact-point flats more pronounced
• BIt softens the drop feel and may mute contact area readings
• CIt eliminates the need for a graph entirely
• DIt doubles the number of possible combinations

An S&G 8077AD is a Group 1R lock. What does the 'R' designation tell you about manipulation resistance?

• AIt has reduced resistance compared to Group 2
• BIt is radio-controlled
• CIt is UL-listed as resistant to both expert manipulation and radiological (X-ray) attack…
• DIt is a residential-grade lock

Which LaGard mechanical lock model is most commonly found on modern commercial gun safes and is readily manipulable by a trained CMST?

• ALaGard 3330
• BLaGard ComboGard Pro
• CLaGard 2200
• DLaGard LKM7000

On a manipulation graph with plotted left and right contact points, the AMPLITUDE of the curve represents:

• AThe number of wheels in the pack
• BThe relative position of the gate under the lever nose
• CThe wheel diameter in millimeters
• DThe age of the lock

A 4-wheel mechanical combination lock is considerably harder to manipulate than a 3-wheel lock primarily because:

• AIt has a hardplate
• BThe fourth wheel exponentially increases required test cycles and masks contact points
• CFour wheels always use different numbers
• DManipulation tools cannot reach four wheels

A 'drop-in' indicator during manipulation is BEST described as:

• AThe relocker firing unexpectedly
• BA tactile/graph event showing the lever nose has fallen into a true gate
• CThe dial ring loosening
• DAn electronic chirp from the lock

The LaGard 3390 differs from the 3330 primarily in that it has:

• AAn electronic keypad
• BA manipulation-resistant lever and relocker package qualifying it as Group 1
• COnly two wheels
• DA key override

During manipulation of an S&G 8130, a Group 1 4-wheel lock, which TEST WHEEL strategy is typically recommended?

• AAlways use wheel 1 as the test wheel
• BUse the wheel furthest from the drive (wheel 4) as the test wheel because it shows contac…
• CSkip the test wheel and solve all four simultaneously
• DTest wheels are not used on Group 1 locks

Contact points (contact area) on a mechanical combination lock are caused by:

• AThe lever nose touching the sides of the drive cam gate
• BWheels striking the lock case
• CThe relocker engaging and disengaging
• DThe dial ring limiting rotation

Why can a dial ring with loose tolerance cause FALSE manipulation readings?

• AIt changes the combination
• BPlay in the dial ring adds random offsets to contact-point measurements, masking real gat…
• CIt prevents the relocker from functioning
• DIt cannot — dial ring tolerance has no effect

Which of the following BEST characterizes the relationship between wheel-pack construction and manipulation resistance?

• AAluminum wheels resist manipulation better than brass
• BSerrated (false-gated) wheel edges create multiple false drops, increasing resistance
• CPlastic wheels always qualify as Group 1
• DWheel material does not affect manipulation

When drilling a typical Group 2 mechanical safe lock to read wheels with a borescope, the preferred drill point is:

• ADirectly into the dial ring index
• BA calculated point that places the bit adjacent to the wheel pack without hitting the rel…
• CCenter of the spindle shaft
• DThrough the handle shaft

A hard plate in a high-security safe is typically made of:

• ASoft copper
• BHardened tool steel, often with embedded tungsten carbide chips or ball bearings
• CAluminum
• DPolycarbonate plastic

Which drill bit type is typically preferred when cutting through carbide-chip hard plate?

• AHigh-speed steel (HSS) twist bit
• BDiamond-tipped core bit
• CWood auger
• DBrad-point bit

A 3/16" drill hole is commonly used for:

• ACutting through hard plate
• BBorescope inspection ports after scoping through a change-key hole or thin body
• CDrilling out the handle spline
• DPenetrating a TRTL-30 vault door

When using an MBA USA Auto-Zap or similar auto drill jig, the PRIMARY benefit over freehand drilling is:

• AIt eliminates the need for drill-point charts
• BIt maintains exact angle and depth relative to the dial so the bit lands on the calculate…
• CIt drills through any metal without bit wear
• DIt removes the requirement for eye protection

The 'change key hole' on a mechanical combination lock is used primarily to:

• AReset the combination from the back of the door when open
• BBypass the relocker during burglary
• CProvide ventilation to the wheel pack
• DMount the dial ring

When drilling a dial ring attack point (behind the dial), which hazard is MOST important to avoid?

• AShorting the battery
• BHitting and firing a glass or wire relocker
• CCausing a dial imbalance
• DVoiding a factory paint warranty

What is the typical advantage of a 1/4" scope hole over a 3/8" hole?

• ALess material removed — easier plug and repair, and preserves safe rating for re-certific…
• BIt drills faster
• CIt accepts more borescope models
• DIt cannot be repaired

Tungsten carbide is preferred over high-speed steel in drilling hard plate because tungsten carbide has:

• AHigher hardness (roughly HRC 90+) maintaining cutting edge on hardened steel
• BLower hardness, preventing damage to the plate
• CMagnetic attraction to relockers
• DThe ability to cut only copper

When drilling from the top of the safe to reach a boltwork mechanism, the CMST must also consider:

• AOnly door thickness
• BTop-panel relockers, tear-gas canisters (rarely), internal bracing, and the angle needed…
• CWeight of the dial
• DColor of the safe

A borescope with articulating tip is particularly useful when:

• AThe drill hole does not align directly with the wheel gates and the scope must 'look arou…
• BDrilling straight down into concrete
• COpening a key-in-knob cylinder
• DChecking a dial index

In a safe with a punch-resistant spindle, the spindle is typically made of:

• AHollow aluminum
• BBrass
• CHardened steel with a drive-pin arrangement that shears under punch attack, preventing sp…
• DWood

A glass relocker operates by:

• AUsing a glass fuse that blows on short circuit
• BA tempered-glass plate that shatters when drilled or struck, releasing spring-loaded bolt…
• CA prism that bends drill bits
• DEmitting an audible glass alarm

A random wire relocker is particularly effective because:

• AThe wire pattern is identical on all safes of that model
• BThe wire is routed randomly in each unit so its position cannot be predicted and any cut…
• CIt uses radio signals to alert police
• DIt self-repairs after firing

A PMC (powder-metal composite) hard plate differs from solid tool-steel hard plate in that it:

• ACannot be drilled at all
• BContains embedded abrasive particles distributed through a sintered matrix to rapidly des…
• CIs softer to save weight
• DIs made only for home safes

On an S&G 6120 container lock (GSA-spec), the relocker is typically located:

• AIn the dial
• BBehind the lock case integrated with the boltwork so a lock-case attack fires the relock
• CInside the handle
• DIn the combination card holder

M2 tool steel is commonly used for hard plates because of its:

• ALow cost and easy machining
• BHigh hardness, wear resistance, and heat resistance after hardening
• CRust-preventing zinc coating
• DConductivity for electronics

A thermal relocker fires when:

• ADrill bit dulls
• BHeat (typical threshold around 170-200°F, depending on device) from a torch or drill melt…
• CRoom temperature drops below freezing
• DThe battery fails

The S&G Titan PivotBolt (model 2006) electronic safe lock is commonly specified where:

• AResidential use with no attack concerns
• BHigh-security commercial safes requiring UL Type 1 rated electronic lock with audit trail…
• CVehicle glove boxes
• DLow-cost gun cabinets

LaGard ComboGard Pro / LKM7000 locks are administered via:

• AA dial only
• BA keypad interface supporting manager/user hierarchy, audit trail, and optional PC softwa…
• CVoice recognition
• DBiometric fingerprint only

UL 2058 Type 2 (for high-security electronic safe locks) specifies, among other things, resistance to:

• AHeat and flame only
• BElectronic attacks including voltage spikes, EMP, magnetic fields, and information/side-c…
• CNoise pollution
• DWater immersion

A 'two-person rule' (dual control) on a high-security electronic lock typically requires:

• ABoth users to physically hold the handle
• BTwo separate valid user codes entered sequentially within a time window before the lock w…
• CThe manufacturer's technician to be present
• DA police officer

A duress code on an electronic safe lock typically:

• ASilently opens the lock while signaling an alarm panel or central monitoring station
• BLocks out all users permanently
• CPlays a loud siren at the keypad
• DCalls the manufacturer

Downloading an audit trail from a high-security electronic lock generally requires:

• ACutting the keypad cable
• BA manufacturer-specific USB, serial, or RS-232 interface and encrypted authentication wit…
• COpening the safe first
• DRemoving the battery

Managing 100+ users on a high-security electronic lock is typically accomplished by:

• AMemorizing all codes
• BUsing PC management software and a user database imported to the lock, supporting batch e…
• CWriting codes on the safe
• DImpossible — electronic locks support at most 10 users

The Kaba Mas Cencon family of locks is specifically designed for:

• AResidential jewelry safes
• BRemote-site banking and ATM service access using one-time combinations and centralized di…
• CPersonal gun safes
• DStorage unit padlocks

EMP protection on a high-security electronic safe lock is primarily achieved by:

• AWrapping the keypad in foil
• BFiltered power conditioning, shielded enclosures, and firmware that recovers without losi…
• CDisconnecting the battery during storms
• DUsing wooden safe bodies

A UL TRTL-30X6 rating indicates the safe resisted tool and torch attack on all six sides for at least:

• A15 minutes net working time, only on the door
• B30 minutes net working time on all six sides against specified tools and oxy-fuel torch
• C1 hour on the front only
• D24 hours

A UL TXTL-60 rating means the safe resisted:

• AOnly tool attack for 60 minutes
• BTool, torch, AND explosive (nitroglycerin or equivalent) attack for 60 net working minutes
• CX-ray imaging for 60 minutes
• DThermal attack only

CEN EN 1143-1 is the European standard for burglary-resistant safes. It classifies safes from:

• AGrade A to Grade F
• BClass 0 through Class XIII (with grades generally 0-VI common in consumer/commercial, hig…
• CTier 1 to Tier 3
• DBasic to Premium

UL 608 applies to:

• AResidential gun safes
• BVault doors and modular vault panels
• CElectronic locks only
• DFirearms cabinets

UL 752 standards govern:

• ABullet-resistant glass and equipment, rated Levels 1-10 by projectile type and count
• BTorch-resistant safes
• CResidential alarms
• DElectronic safe locks

A GSA Class 5 container approved under Federal Spec AA-F-358 (later AA-F-363) is rated for:

• A30 minutes surreptitious, 10 minutes covert, and 20 man-hours against forced entry
• BNo forced-entry resistance
• COnly fire resistance
• DWater resistance