Network Addressing

IP Address

Decimal identifier for a device in the network

Can a device’s IP address change?

Yes

What format are most IP addresses in?

IPv4 format

MAC Address

hexadecimal identifier burned into the NIC of a device

Can a MAC address change?

No

What is the difference between private and public IP addresses?

Public IP addresses are routable to the internet, while private IP addresses are made to allow for LAN connections.

Class A IP addresses

Large corporations with a beginning octet range of 0-126.

Class B IP Addresses

Medium-level businesses with a beginning octet of 127-191

Class C IP addresses

Small businesses and households with beginning octet of 192-224

Loopback Address

IP addresses that start with 127, tests the network card of a device

What are the private ranges for Class A IP’s?

from 10.0.0.0 to 10.255.255.255

What are the private IPs for class B?

172.16.0.0 - 172.31.255.255

Private IPs - Class C

192.168.0.0 - 192.168.255.255

Ipv6

Written in hexadecimal

IPv4

Written in decimal

Automatic Private IP Addressing (APIPA) IP Ranges

169.254.0.0 - 169.254.255.255

What is the primary function of APIPA?

enables devices to communicate when no DHCP server is available