Lesson 23—Troubleshoot Network Issues

Question 1

What are three common issues that can interrupt network services on a Mac computer?

Answer 1

These three common issues can interrupt network services on a Mac:

a. Local issues—Usually related to either improperly configured network settings or disconnected
network connections.

b. Network issues—Use network diagnostic to help you investigate possible causes.
c. Service issues—Related to the network device or service you are trying to access.

Question 2

How can you identify the MAC addresses for all the Mac computer’s network interfaces?

Answer 2

You can identify all the MAC addresses for the Mac computer’s network interfaces from the Info pane in
Network Utility.

Question 3

How can you verify basic connectivity to another network host?

Answer 3

You can use the Ping tab in Network Utility to test basic connectivity to another network host by sending a ping packet and then waiting for its return.

Question 4

How can you verify that DNS host name resolution is working?

Answer 4

You can use the Lookup tab in Network Utility to test name resolution against the currently configured DNS server.

Question 5

How can you verify that the system can establish a connection to a remote network host?

Answer 5

You can use the Traceroute tab in Network Utility to verify the connection hops between your Mac and a
remote host.