20.5.4 Check Your Understanding – Common Internet Connectivity Issues Answers

1. If your physical connection is working as expected, but there is still a problem, what would be the next step?

  • Check your IP configuration.
  • Call your ISP.
  • Reboot all the devices on the network.
  • Unplug cables and plug them back in.

Explanation: If the physical connection to the wired or wireless host appears to be connecting as expected, then check the IP configuration of the client.

2. What command can you use to ask the DHCP server to refresh your IP addressing configuration?

  • ping
  • netstat
  • ipconfig /renew
  • tracert
  • nslookup

Explanation: Use the ipconfig/release and ipconfig/renew commands to release and refresh your IP addressing configuration.

3. What is the most likely cause if you are able to ping multiple sites on the internet, but not able to open web pages?

  • DHCP configuration
  • IP addressing configuration
  • web server configuration
  • firewall configuration

Explanation: If Layers 1 through 3 all appear to be operating normally and you can successfully ping the IP address of the remote server, check firewall configuration. There may also be a DNS issue.

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