Did you know that the DNS client in Windows 7 (like the DNS server in Windows Server 2008 R2) supports DNS Security Extensions (DNSSEC) as per RFCs 4033, 4034, and 4035 to validate the integrity of DNS records? Windows Server 2008 R2 can validate that a DNS record was generated by an authoritative DNS server and that the DNS record has not been modified. This ensures the integrity of DNS responses.
You can view the IP configuration of your computer by using either the command-line tools Ipconfig or Netsh, or by using the Network and Sharing Center. The command-line tools display your computers’ network adapters IP settings including IPv4 and IPv6 addresses, subnet masks and the default gateway.
An IP address identifies a computer in a network and hence, each computer must have a unique address within the same network. Private IP addresses are used for internal networks while public addresses are used for the Internet. Since there are not enough public IP addresses to be allocated for every internal device, we use private addresses internally and use NAT to translate these addresses to a public address. An organization or individual that needs Internet access is allocated one or more public IP addresses through various agencies worldwide that are responsible for the distribution of public IP addresses.