1.6 - Windows IP Address Configuration

Question 1

How Windows gets an IP address

Answer 1

• DHCP (Dynamic Host Configuration Protocol)
  – Automatic IP addressing
  – This is the default
• APIPA (Automatic Private IP Addressing)
  – There’s no static address or DHCP server
  – Communicate locally (link-local address)
  – Assigns 169.254.1.0 to 169.254.254.255
  – No Internet connectivity
• Static address
  – Assign all IP address parameters manually
  – You need to know very specific details

Question 2

TCP/IP host addresses

Answer 2

• IP Address – Unique identifier
  Subnet mask – Identifies the subnet
  Gateway – The route off the subnet to the rest of the world
• DNS – Domain Name Services
  – Converts domain names to IP addresses
• DHCP – Dynamic Host Configuration Protocol
  – Automates the IP address configuration process
• Loopback address - 127.0.0.1 - It’s always there!

Question 3

A backup for the DHCP server

Answer 3

• Multiple DHCP servers should be installed
  for redundancy
  – There will always be one available
• If a DHCP server isn’t available, Windows uses the
  Alternate Configuration
  – The default is APIPA addressing
• You can also configure a static IP address
  – Keep working normally