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27. Jack is a security advisor in his company. All users need to connect to an FTP server for data exchange using the FTP protocol. Considering the fact that FTP is an unsecure protocol, which of the following protocols should he replace the FTP protocol with?
28. John is using IE version 6.0 as his browser. He wants to enable ActiveX controls and he also wants a high level of security set for the Internet zone. How can he accomplish this?
30. John is getting frequent complaints from users about receiving unsolicited e-mails from an e-mail address. What should he do to prevent this from occurring?