If you are able to query the ISP's DNS servers from behind the proxy server or firewall, Windows 2000 and Windows Server 2003 DNS server is able to query the root hint servers. UDP and TCP Port 53 should be open on the proxy server or firewall.
What is the range of IP addresses in the classes of internet addresses?
What are the important topologies for networks?
Difference between bit rate and baud rate?
What is anonymous FTP and why would you use it?
What is the difference between an unspecified passive open and a fully specified passive open?
What is virtual path?
Explain the function of Transmission Control Block?
What is a DNS resource record?
What is a pseudo tty?
What is the Network Time Protocol?
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