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IP Address

What is an IP Address?

An IP address (Internet Protocol address) is a unique identifier assigned to each device connected to a computer network that uses the Internet Protocol for communication. It allows devices to locate and communicate with each other over the network.

How Does an IP Address Work?

IP addresses are used to identify devices and route data between them. When a device sends data, the IP address helps ensure it reaches the correct destination. Routers and switches use IP addresses to forward packets across networks.

Types of IP Addresses

  • IPv4: The most widely used type, consisting of four numbers separated by dots (e.g., 192.168.1.1).
  • IPv6: A newer type designed to replace IPv4, using eight groups of hexadecimal numbers separated by colons (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).
  • Public IP Address: Used to identify devices on the global internet.
  • Private IP Address: Used within local networks and not routable on the internet.
  • Static IP Address: Manually assigned and does not change.
  • Dynamic IP Address: Automatically assigned and may change over time.

How Are IP Addresses Allocated?

IP addresses can be allocated in several ways:

  • Manual Allocation: Network administrators assign static IP addresses to devices.
  • Automatic Allocation: Devices receive dynamic IP addresses from a server using protocols like DHCP.

Types of IP Address Allocation

  1. Static Allocation: The address is set manually and remains fixed.
  2. Dynamic Allocation: The address is assigned automatically and may change, typically managed by a DHCP server.

For more details about DHCP (Dynamic Host Configuration Protocol), see the DHCP documentation.