Which of the following are true of master key systems? a) The great grand master key opens all of the locks in the system b) Replacing a lost master key is inexpensive c) They are convenient for managers d) They are not authorized for DoD use in barracks e) Because of their inherent security risks, their use is discouraged Match: Switching device: authorizes the operating mechanism to open the lock a) Cylinder b) Combination c) Latch Match: Operating Mechanism: interacts with the switching device to allow or deny entry a) Cylinder b) Combination c) Latch

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