12. How common are duplicate packets and retransmission on most TCP/IP networks?
Indicate whether the sentence or statement is true or false.
13. _______ The encryption method involved in SSH and TLS uses three keys.
14. _______ TCP is more vulnerable to hijacking than UDP.
Match these unsafe network protocols with their safer encrypted counterparts:
a. Post Office Protocol (POP3)
b. File Transfer Protocol (FTP)
c. Telnet
d. Internet Message Access Protocol (IMAP)
e. Hypertext Transport Protocol (HTTP)
f. Simple Mail Transfer Protocol (SMTP)
15. _______ POP3 over TLS
16. _______ SMTP over TLS
18. Name a safer, encrypted counterpart to Telnet.
19. Name a safer, encrypted counterpart to File Transfer Protocol (FTP).
20. _______ Secure Hypertext Transport Protocol (HTTPS), SSL