Network Addresses p12 Summary

Network Addresses

• Enable communication between devices.

• Two primary types: Physical addresses and Logical addresses.

Physical Addresses

• Unique identifier for devices (MAC address).

• Hard-coded in Network Interface Card (NIC); cannot be changed.

• Example of MAC Address: 70-D9-58-36-C2-EE.

  • Format: 6 parts, each with 2 hexadecimal characters, separated by dashes (-) or colons (:).

  • Represents a 48-bit binary number.

• Characteristics:

  • Duration: Permanent.

  • Use case: Local network communication.

  • Notation: Hexadecimal format.

  • Assigned by NIC manufacturer.

Logical Addresses

• Unique identifiers assigned to devices for network identification (IP Address).

• Can be changed by network admins or DHCP systems.

• Common form: IPv4 addresses (e.g., 192.168.1.1).

  • Notation: Dotted decimal format.

  • Each segment is an octet (8 bits).