Journal-Notes-01-24-23

• MAC Address - Physical address of a device issued by the manufacturer.

• IP Address - Given by your internet provider, it is a device address that is used to send traffic and receive traffic over the internet.

• NIC - Network interface card, allows a system to connect to the internet.

• Wired network - A network that uses cables to establish network connection.

• Wireless network - A network that uses radio signals to establish network connection.

• Ethernet - Ethernet works by breaking up information being sent to or from devices, like a personal computer, into short pieces of different sized bits of information called frames. Those frames contain standardized information such as the source and destination address that helps the frame route its way through a network.

• Wi-Fi Alliance—an organization that tests and certifies wireless equipment for compliance with the 802.11x standards

• 802.11a (Wireless-A): This standard can provide data transfer rates up to 54Mbps and an operating range up to 75 feet. It operates at 5GHz.

• 802.11b (Wireless-B): This standard can provide data transfer rates up to 11Mbps, with ranges of 100–150 feet. It operates at 2.4GHz.

• 802.11g (Wireless-G): This standard can provide data transfer rates up to 54Mbps up to 150 feet. It operates at 2.4GHz.

• 802.11n (Wireless-N): This standard provides data transfer rates up to 4 × 802.11g speeds (200+Mbps). It operates either at 2.4GHz or 5GHz.

• 802.11ac (Wireless-AC): This is the latest wireless standard. It provides single-station data transfer rates of 1.3Gbps and operates in the 5GHz frequency band.

• LAN Topologies

  • Fully connected

  • Mesh Network

  • Star network topology

  • Common bus topology

  • Ring network topology

• Node, one end point within a network.