Specify the maximum number of computers in a direct connection.

Directly, that is, without intermediate devices, you can only connect two (if you are talking about RJ-45 type.), And through a switch there are infinitely many.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.