Final answer:
Employee training systems is one of the five basic process technology systems that any Internet service provider should consider when dealing with the customer service side of the business.
Step-by-step explanation:
Of the options listed, employee training systems is one of the five basic process technology systems that any Internet service provider should consider when dealing with the customer service side of the business. Employee training systems play a crucial role in ensuring that the staff members are well-equipped with the necessary skills and knowledge to provide effective customer service.
Phone systems are essential for communication with customers, knowledge systems can help provide quick and accurate information to customers, and reverse logistics systems can facilitate the return and management of customer equipment or products. However, while these options are important, employee training systems specifically focus on building the skills and knowledge of the service providers, making them a crucial component of the customer service process in an Internet service provider.
Therefore, the correct answer is 4. Employee training systems.