12 Questions
What does it mean if the Windows reports 'Limited connectivity' for a network adapter?
The adapter is set to obtain an address automatically, but no DHCP server can be contacted
How does Windows determine 'No Internet access' for a network adapter?
By attempting a connection to www.msftncsi.com and checking DNS resolution
Where can you view IP configuration information in Windows?
Network & Internet settings or the adapter's status dialog
What does the 'ipconfig' command display when used without switches?
IP address, subnet mask, and default gateway (router) for all network adapters
What can ipconfig resolve related to adapter configuration?
Whether the adapter is configured with a static address or by DHCP
What does 'ipconfig /release' command do?
It releases the IP address obtained from a DHCP server
What is the purpose of 'ipconfig /renew' command?
To force a DHCP client to renew the lease it has for an IP address
What does 'ipconfig /displaydns' command do?
It displays the DNS resolver cache
What is the purpose of the 'ipconfig /flushdns' command?
It clears the DNS resolver cache
What information does the 'hostname' command return?
The name configured on the local machine
What does the Network Reset command do in Windows?
Clears any custom adapter configurations and network connections
When is restarting a server warranted?
If the problem is widespread
Study Notes
Network Connectivity Issues
- 'Limited connectivity' means Windows detects a network connection but no internet access.
Determining No Internet Access
- Windows determines 'No Internet access' by checking DNS resolution and pinging well-known internet hosts.
Viewing IP Configuration
- IP configuration information can be viewed in Windows via the Command Prompt command 'ipconfig' or the Network and Sharing Center.
ipconfig Command
- The 'ipconfig' command displays IP configuration information, including IP address, subnet mask, default gateway, and DNS servers, when used without switches.
- ipconfig resolves adapter configuration issues, such as releasing and renewing IP addresses.
ipconfig Options
- 'ipconfig /release' releases the IP address, disconnecting from the network.
- 'ipconfig /renew' renews the IP address, requesting a new IP address from the DHCP server.
- 'ipconfig /displaydns' displays the DNS resolver cache.
- 'ipconfig /flushdns' clears the DNS resolver cache.
Hostname Command
- The 'hostname' command returns the hostname of the local computer.
Network Reset
- The Network Reset command in Windows resets network adapters, removing and reinstalling them, and resets network settings to their default values.
Server Restart
- Restarting a server is warranted when troubleshooting complex network issues or after making significant network configuration changes.
Test your knowledge of troubleshooting IP configuration issues on Windows with this quiz. Learn about error states, network adapter settings, and how to resolve limited connectivity issues.
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