Hardware of LAN
- Server
- Network Workstation
- Network Adapter)
- Hub
- Vswitch
LAN components
- Mainstream network model: Ethernet
- Main Building Network Topology: Star-shaped Topology
Lan transmission medium
- Twisted Pair wires
- Coaxial Cable
- Optical Fiber
- Wireless
Ethernet Transmission Mechanism
- The IEEE 802.3 protocol planned by the LAN Organizing Committee uses the "CSMA/CD" Transmission Method
Generally, 172.16.x.x or 192.168.x.x is used to plan IP addresses in the office network.
Knowledge points in questions:
- A hub is only a medium used to connect lines of computers;
- Network interface card (NIC );
- The layers of the OSI system and the Internet model (TCP/IP) are different (compared with the OSI model, there is no presentation layer and Session Layer in the Internet; the Internet does not explicitly specify the Communication Subnet protocol, the physical layer, data link layer, and network layer of the Communication Subnet are not differentiated. The Internet emphasizes the Internet layer, and the IP protocol running is the core protocol of the Internet, and the Internet connection layer only provides connectionless services, rather than connection-oriented services );
- The network adapter is selected based on the topology of the network, the maximum length of the network segment, the distance between nodes, and the type of transmission media used;
- The maximum length of a twisted pair connecting a computer to a hub is 100 meters;
- RJ45 is a NIC interface that uses twisted pair wires as transmission media;
- A group of workstations connected to a hub belong to the same conflict domain and broadcast domain;
Part 2 connect to the office network using a hub-Note
