A. If you right-click a network connection and select Status, Windows displays information about the connection's speed, duration of connection, and packet activity. For XP and later, a Repair option appears on the Support tab. When you click Repair, Windows attempts to resolve a range of problems. Specifically, the OS

• Attempts to renew the DHCP lease, if the connection obtains its IP address through DHCP, using a broadcast message.
• Flushes the Address Resolution Protocol (ARP) cache using the command

  arp -d * 

• Flushes the NetBIOS cache using the command

  nbtstat -R

• Flushes the DNS cache using the command

  ipconfig /flushdns

• Reregisters the NetBIOS name and IP address with WINS using the command

  nbtstat -RR 

• Reregisters the computer name and IP address with DNS using the command

  ipconfig /registerdns