North Carolina Locksmith Practice Exam

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What describes a combination lock designed to prevent unauthorized determination of the combination?

Locked Down
Manipulation Proof
Security Enhanced
Combination Secure

The correct answer is: Manipulation Proof

A combination lock designed to prevent unauthorized determination of the combination is best described as "manipulation proof." This term refers to the features and mechanisms built into the lock that resist attempts to decipher the combination through methods like picking, decoding, or exploiting vulnerabilities in the lock's design. Manipulation-proof locks often include advanced security features such as complex dial increments, internal mechanisms that are difficult to analyze or manipulate, and materials that are resilient against common tampering techniques. These characteristics provide an added layer of security, ensuring that only those who know the correct combination can open the lock. Other options like "locked down," "security enhanced," or "combination secure" might imply additional security levels or physical immobilization features, but they do not specifically address the resilience to direct manipulation and unauthorized determination of the combination as effectively as "manipulation proof" does. Therefore, this term accurately encapsulates the unique aspect of this type of combination lock.