Which SOS subsystem has a server that retains and distributes software for a site?

• A. Site Support Subsystem (SSS)
• B. Terminal Automation Subsystem (TAS)
• C. Monitor and Control Subsystem (MCS)
• D. Operational Data Subsystem (ODS)

Answer: (A)

Software management for a site is handled by the Site Support Subsystem. This subsystem acts as the local software repository and distribution point, storing approved software images, patches, and configuration files, and delivering them to site equipment as needed. It keeps track of versions and coordinates deployments during maintenance windows, ensuring devices at the site stay current. The other subsystems focus on automation, monitoring/control, or data handling, not on hosting and distributing site software, which is why the Site Support Subsystem is the best fit.