Which of the following items is used as a component in intrusion detection systems?

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Multiple Choice

Which of the following items is used as a component in intrusion detection systems?

Explanation:
Intrusion detection systems rely on sensors that actively detect unauthorized entry. A motion sensor fits this role because it monitors for movement in a protected area and signals the system when activity is detected, initiating an alert or log. It directly contributes to detecting intrusions, which is the core function of an IDS. Transmission line is simply a communication path for signals and isn’t itself a detection device. A password vault stores credentials and isn’t related to detecting intrusions. An alarm siren, while important for alerting once a threat is detected, is an output device rather than the detecting element itself.

Intrusion detection systems rely on sensors that actively detect unauthorized entry. A motion sensor fits this role because it monitors for movement in a protected area and signals the system when activity is detected, initiating an alert or log. It directly contributes to detecting intrusions, which is the core function of an IDS.

Transmission line is simply a communication path for signals and isn’t itself a detection device. A password vault stores credentials and isn’t related to detecting intrusions. An alarm siren, while important for alerting once a threat is detected, is an output device rather than the detecting element itself.

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