If you configure any more passwords on the switch, will they be displayed in the configuration file as plain text or in encrypted form

The "service password-encryption" global configuration command encrypts passwords configured before and after the command is issued.

Explanation:

A switch is an intermediate network device that is used to transfer frames to nodes on its collision domain. It operates in the Data-link layer of the OSI model.

Switches uses media address control (MAC) table, containing the MAC addresses of the nodes in the network, to determine the destination of nodes.

In the global configuration mode in a switch, the password and other protocols are configured. The service password-encryption command in the global execution mode encrypts passwords configured before and after the command.