In a wide area network (wan), how would you troubleshoot an issue with the domain name system (dns)?
a. use the beaconing feature to make sure the carrier network infrastructure is working.
b. use the autosensing mechanism to make sure the firewall is set up.
c. get the of someone with specialized knowledge in the area.
d. run antivirus software until you can trace the root of the problem.

Create a file called favorite_foods, and list your favorite foods, entering five or six or more. press enter after each favorite food so it appears on its own line (make certain you also press enter after the final food item). after the file is created, add two more foods you like that are not on the list (press enter after the final food item). view the list of foods to make certain the two items you added appear at the end of the list