An enterprise wants to build a server system and is required to be able to achieve which of the following functions? (Multiple Choice) 1. The enterprise needs to have its own dedicated mailbox, and…

An enterprise wants to build a server system and is required to be able to achieve which of the following functions? (Multiple Choice) 1. The enterprise needs to have its own dedicated mailbox, and the sending and receiving of emails needs to go through the enterprise's server: 2. The server must provide file transfer and access services, and provide accounts with different permissions for users in different departments within the enterprise: 3. Enterprises can directly enter the domain name in the browser when accessing the internal web page of the enterprise. To meet the above requirements, which of the following servers does the enterprise need to deploy?