Practice questions:

Q.1 What is the significance of the DNS protocol while you surf the Internet?

Q.2 How would you define zone transfers and recursive DNS queries?

Q.3 What is the difference between recursion desired and recursion available in DNS queries?

Q.4 How many DNS record types exist? Explain the purpose of the AAAA record type and what does non-authoritative answer mean?

Q.5 Differentiate between active and passive modes of FTP. Explain which mode is better.

Q.6 What solution can you come up if you are being asked to make your FTP session encrypted? Explain the difference it would make.

Q.7 Using a virtual infrastructure or a physical one, install the FTP server on any of the machines and then try to communicate with it while capturing live packets in Wireshark.

Q.8 Find out how you can limit the maximum number of login attempts. How can such limitation affect the overall security of your FTP server?

Q.9 Why do we refer to HTTP communication as a request/response approach and what is...