What is the maximum number of testers that a 32-bit TSM can support actively?

The maximum number of testers that a 32-bit Test System Manager (TSM) can actively support is influenced by the limitations inherent in a 32-bit architecture. A 32-bit system can typically address up to 4 gigabytes of memory, but this does not translate directly into the number of testers that can be managed due to additional overhead associated with processes, memory allocation, and network traffic.

In practical scenarios, the ability of a TSM to manage multiple testers is often bound by the system's resource allocation and the required performance for each active tester. For many systems optimized for performance, the practical limit may be found around 100 to 150 testers. The specific value of 150 testers reflects a balance of stability and performance typically found in many 32-bit systems when optimized correctly.

Therefore, the choice that identifies 150 testers aligns best with the operational capabilities of a 32-bit TSM in realistic settings, making it the correct answer. This consideration is essential for ensuring that the system remains functional and responsive, allowing it to effectively manage testing processes while maintaining an adequate level of performance.