Encryption, IP Addresses, MAC Addresses

avatar
Created by
Evelyn Clarke

Cards (13)

  • What unique identifier do all NICs have?
    Media Access Control (MAC) address
  • Are MAC address unique worldwide or unique to the network?
    Worldwide
  • MAC Address
    A unique identifier assigned to a device that cannot be changed
  • What does a switch use to determine where the packets go to?
    MAC Address
  • What does a router use to determine where the packets go to?
    IP Address
  • Internet Protocol (IP)
    The protocol responsible for directing packets between networks
  • Types of IP address: IPv432-bit numbers often displayed as four numbers between 0 and 255 separated by full stops. For example: 72.124.131.67
  • Types of IP address:
    IPv6128-bit numbers, often displayed as eight groups of four hex digits between 0 and ffff. For example: 2001 : 0db8 : 85a3 : 0000 : 0000 : 8a2e : 0370 : 7334
  • Why do devices need IP addresses to connect to the Internet?
    IP addresses are used to identify devices on a the Internet. Routers use IP addresses to direct data packets to the correct destinations
  • Encryption
    Coding data so it can only be decoded with the correct key
  • Encrypted text is called cipher text, while non-encrypted data is called plain text
  • Encryption is essential for sending data over a network securely
  • Describe a MAC address
    A hexadecimal address using six numbers.