What is the application layer?

What is the transport layer?

What is the data link layer?

What is the network layer?

What is TCP/IP?

What is in the TCP/IP stack?

How does email work?

What is POP and IMAP?

What is SMTP?

What is a protocol?

What is HTTP?

What is HTTPS?

What are audit trails?

Why does a company want
to back up data?88