i need two different documents for two assignments

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Question-1:

  • 8.1 What is the difference between RFC 5321 and RFC 5322?
  • What are the SMTP and MIME standards?
  • What is the difference between a MIME content type and a MIME transfer encoding?
  • Briefly explain base64 encoding.
  • Why is base64 conversion useful for an e-mail application?
  • What is S/MIME?
  • What are the four principal services provided by S/MIME?
  • What is the utility of a detached signature?
  • What is DKIM?

Question-2:

In no less than 250 words, describe a type of email threat and how a hacker can use it to get sensitive information. How can a network administrator prevent this type of attach from happening?

Note: I need two different documents for above two questions