Network Defense Essentials (NDE) Practice Exam

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Study for the Network Defense Essentials Test. Prepare with flashcards and multiple choice questions, complete with hints and explanations. Get ready for your NDE exam!

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Which locking system utilizes motors for locking and unlocking by supplying or eliminating power?

Mechanical lock
Electromagnetic
Keypad lock
Deadbolt lock

The correct answer is: Electromagnetic

The locking system that utilizes motors for locking and unlocking by supplying or eliminating power is the electromagnetic lock. This type of lock operates by using an electric current to create a magnetic field that holds the door securely closed when power is supplied. When the power is cut off, the magnetic force is eliminated, allowing the door to be opened. This mechanism is particularly advantageous in environments that require secure access while allowing for quick egress in emergency situations. In contrast, mechanical locks rely on physical components like pins and tumblers operated by a key, without any electrical components. Keypad locks may involve electrical components as well, but they require a code input and typically do not operate on a motorized system for locking or unlocking. Deadbolt locks, while very secure, are also mechanically operated, utilizing a thumb turn or key to engage or disengage the bolt without any motorized action. Thus, the electromagnetic lock stands out as the system that directly uses motorized components for its operation.