Why might a network administrator assign the read-only class to a user instead of the operator class?

Assigning the read-only class to a user limits their permissions, ensuring they can only view the system's statuses and configurations without having the ability to modify any settings. This is particularly important in environments where security and stability are paramount, as it prevents unauthorized or accidental changes that might disrupt network operations.

While users in the operator class typically have permissions to make changes and perform certain tasks on the network, the read-only class is specifically designed for individuals who need visibility into the system without the risk of altering important configurations. This is useful for roles such as auditors or analysts who require access to data for monitoring and reporting purposes but should not interfere with the operational aspects of the network.

In contrast, the other choices imply additional capabilities, such as full access, troubleshooting tools, or enhanced monitoring capabilities, which are not compatible with the limitations set by the read-only class. Thus, the decision to assign read-only access primarily revolves around maintaining control and security within the network environment.