Associated Locksmiths of America (ALOA) Practice Test 2025 - Free Locksmith Practice Questions and Study Guide

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What type of key is typically used for high-security locks?

Standard key

Master key

Restricted key

High-security locks often use restricted keys because these keys are designed to enhance security by limiting the number of copies that can be made. Restricted keys typically require authorization to duplicate and are often manufactured by specific locksmiths or key manufacturers. This controlled duplication process helps to prevent unauthorized copying and ensures that only those with proper authorization can obtain a key.

In contrast, standard keys can be easily duplicated at many locations and do not offer the same level of security as restricted keys. Master keys allow access to multiple locks but can be more susceptible to unauthorized duplication as well. Universal keys are designed to work across various lock systems, further diminishing security effectiveness. Therefore, the unique features and access control associated with restricted keys make them the optimal choice for high-security lock systems.

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Universal key

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