Dhcp not updating a records in dns
When a computer requests a URL or file from one of these domains, a fake reply is sent, thus preventing many spyware installs from occuring. We all have had problems with machines being overrun by malware: taking 20 minutes to startup, constant popups, hijacking of the home and search pages, bookmarks being added, etc.Malware can even turn a machine into a "zombie", and be an unwilling participant in spam sending/relaying, address harvesting, or DDOS attacks against other computers.Uptown DC will be the primary DNS server for and for a 192.168.0.x reverse-lookup zone, and it will be the secondary DNS server for a 10.0.0.x reverse-lookup zone.Downtown DC will be a secondary DNS server for and for the 192.168.0.x reverse-lookup zone, and it will be the primary DNS server for the 10.0.0.x reverse-lookup zone.Add a couple of hundred other addresses to your frequent site list, and you can see that host names are a lot easier on the brain than IP addresses.But converting host names to IP addresses doesn’t happen by magic.
Network administrators may delegate authority over sub-domains of their allocated name space to other name servers.
The Domain Name System (DNS) is a hierarchical decentralized naming system for computers, services, or other resources connected to the Internet or a private network.