Which alerting method enables notifications to be sent to mobile devices?

The selection of SMS as the correct answer is accurate because SMS (Short Message Service) is specifically designed for sending text messages to mobile devices. This capability is widely utilized for alerting and notification purposes in various applications, such as monitoring systems, security alerts, and service disruptions.

When an alert needs to be communicated directly to individuals on-the-go, SMS is an effective choice because it can reach users rapidly on their mobile phones, ensuring they receive critical information promptly. This method is particularly beneficial when immediate action or response is required, as SMS messages are delivered quickly and can be accessed easily.

In contrast, other methods mentioned, such as SMTP (Simple Mail Transfer Protocol), SNMP (Simple Network Management Protocol), and Syslog, are not primarily focused on delivering notifications to mobile devices. SMTP is used for sending emails, which require an internet connection and may not provide immediate alerts. SNMP is typically used for network management and monitoring rather than direct user notifications. Syslog is designed for system logging and is mainly used for collecting and storing log messages from various devices. Therefore, when considering methods specifically aimed at mobile device notifications, SMS is the clear and appropriate choice.