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Which of the following is a method of establishing a secure connection over the Internet for email transfer?

  1. FTPS

  2. POP3S

  3. HTTPS

  4. IMAPS

The correct answer is: IMAPS

The selection of IMAPS as the method for establishing a secure connection over the Internet for email transfer is appropriate because IMAPS, or Internet Message Access Protocol Secure, is specifically designed for accessing and receiving email securely. It encapsulates the IMAP protocol within a secure layer, typically using SSL/TLS encryption. This ensures that the data transferred between the email client and server is protected against eavesdropping and tampering during transmission. In contrast, other options serve different purposes or protocols that may not be specific to email transfer. For instance, FTPS is a secure extension of the File Transfer Protocol (FTP) and is used for secure file transfers rather than email. POP3S is a secure version of the Post Office Protocol, which is also used for retrieving emails but is less commonly used today compared to IMAPS, which supports more advanced email retrieval capabilities. HTTPS is used for secure web browsing rather than for email transfer. Therefore, IMAPS stands out as the most relevant and secure option for handling email communication over the Internet.