CFL Safe & Vault Technologies 5

Question 1

Which safe attack method involves cutting around the entire perimeter of a safe door with a power tool to separate it from the body?

Accepted Answer

Ripping

Answer

Ripping uses an angle grinder or cutting wheel to cut entirely around the door perimeter, physically separating the door from the safe body rather than defeating the lock.

Question 2

A UL Group 1R combination lock differs from a standard Group 1 lock because it also provides resistance to what?

Accepted Answer

Radiographic (X-ray) analysis of the lock internals

Answer

The 'R' in Group 1R denotes resistance to radiographic attack, meaning the lock is designed so that X-ray imaging cannot reveal the combination or wheel positions.

Question 3

In the context of vault construction, what is the purpose of reinforced concrete with rebar versus plain concrete fill in a safe body?

Accepted Answer

Rebar binds the concrete to resist chisel and bar attacks that would fracture plain concrete

Answer

Rebar creates a reinforced matrix that holds cracked concrete together under attack, preventing attackers from breaking it apart with chisels or bars.

Question 4

What is the forensic significance of finding burn marks and oxidized metal around a safe's hinge area?

Accepted Answer

Evidence of a torch attack focused on melting or cutting the hinge pins or weld seams

Answer

Torch attacks on hinges are used to cut hinge pins or welds to allow the door to be pried from the hinge side rather than the boltwork side, leaving characteristic burn and oxidation patterns.

Question 5

What is the primary forensic difference between a manipulation attack and a drilling attack on a combination lock?

Accepted Answer

Manipulation leaves no physical damage; drilling leaves clear physical evidence

Answer

Manipulation opens the lock by feel and analysis without damaging it, leaving no physical evidence, while drilling creates permanent, visible damage to the lock body and door.

(CFL) Certified Forensic Locksmith Practice Test

(CFL) Certified Forensic Locksmith Practice Test

CFL Safe & Vault Technologies 5