Chapter 18. Configuring and Verifying Host Connectivity
In the world of TCP/IP, the word host refers to any device with an IP address: your phone, your tablet, a PC, a router, a switch, or a wireless access point. Hosts even include some less obvious devices as well: the electronic advertising video screen at the mall, your electrical power meter that uses the same technology as mobile phones to submit your electrical usage information for billing, your new car.
No matter the type of host, any host that uses IPv4 needs four IPv4 settings to work properly:
IP address
Subnet mask
Default router(s)
DNS server IP address(es)
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