Final answer:
The statement is true; Network Operating Systems control and coordinate the activities on a network by managing resources, ensuring authorized access, and maintaining network operations.
Step-by-step explanation:
The statement that Network Operating Systems (NOS) control and coordinate the activities of all computers and other devices on a network is True. A Network Operating System is software that manages and directs network resources and services like user data, applications, and other resources. It also ensures that authorized users have access to network resources, provides security by preventing unauthorized access, and maintains the overall operations of the network.