Some data files should be totally hidden from view, while others should have so users can view, but not change, the data.
answer
no-access properties
read-only properties
full-access properties
write-only properties

read-only properties.

Explanation:

Only the read only properties can view but cannot change the data.The user don't have access to the no access properties, full-access properties can read and modify the data.The write only properties can only modify the data.So to only view the data the data should have read only properties.

b and c ( ip address and port number)