Explain the steps for troubleshooting the following connection problems using one or more of the above commands. (5 points) (a) What are the commands you would use to determine that you are unable to connect to a web server because the server is down? (1 point) (b) How to determine whom to call to discuss and resolve the problem with the web server (cse168.example.com)? (1 point) (c) Once you call and confirm that the web server is up and running (i.e., the server is not down), how would you troubleshoot the following network configuration issues? (2 points) (d) What command can be used to determine that a router in the path to the web server (cse468.example.com) is not working, possibly due to a physical connection failure? (1 point)