Final answer:
Engaging the services of staffing firms to maintain the company's personnel data is not considered a primary managerial task in managing the strategy execution process.
Step-by-step explanation:
The principal managerial tasks associated with managing the strategy execution process include: ensuring that policies and procedures facilitate effective execution, installing information and operating systems that support company activities, and exerting internal leadership to drive implementation. However, engaging the services of staffing firms to maintain the company's personnel data is not typically considered a principal task in strategy execution. The focus of this management aspect is on implementing strategies within the organization rather than on the outsourcing functions related to personnel data management.