Part 6 Network Configuration: Lesson 24

Question 0

How do network devices acquire and use self-signed TCP IP addresses?

Answer 0

If DHCP is specified as the configuration for a TCP/IP connection and no DHCP service is available, the device automatically selects a random IP address in the 169.254.XXX.XXX range after checking the local network to ensure that no other device is using that IP address. In most cases, though, this addressing is not normal, and it’s often indicative of a problem with DHCP services.

Question 1

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

Answer 1

Four common issues that can interrupt network services on a Mac are:
Ethernet connectivity issues which can cause the hardware network interface to become inactive or introduce excessive packet errors
Wi-Fi connectivity issues caused by the selection of an improper Wi-Fi network or excessive wireless interference
DHCP service issues which prevent proper TCP/IP configuration
DNS service issues, which prevent host name resolution

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 of Network Utility.

Question 3

How can you verify basic connectivity to another network host?

Answer 3

The Ping pane of Network Utility allows you to test basic connectivity to another network host by sending and then waiting for the return of a ping packet.

Question 4

How can you verify that DNS hostname resolution is working?

Answer 4

the Lookup pane of Network Utility allows you 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

The Traceroute pane of Network Utility allows you to verify the connection between your Mac and a remote host.