LAN is a computer network where the network area is very small or limited. For example, a computer network at work, school, home, or in one room only.
Currently, most LANs use IEEE 802.3 Ethernet technology and are equipped with switches with data transfer speeds of 10, 100, or 1000 Mbits/second. In addition, there is also 802.11b (Wi-fi) technology which is widely used to form LANs, where the area that provides a Wi-fi-tech LAN connection is called a hotspot.
In general, LAN networks are used to connect several computers that are in a small area or close together. For example, a computer network in a school laboratory that is connected to each other so that the process of exchanging data can be done easily and quickly.
LAN Network Function
Pada dasarnya fungsi utama jaringan LAN adalah untuk menghubungkan beberapa komputer di dalam jaringan sehingga proses kerja menjadi lebih mudah dan cepat. Sesuai dengan pengertian LAN yang dijelaskan sebelumyan, adapun tujuan LAN adalah sebagai berikut:
To connect several computers in a small area.
To enable communication between computers and devices in the network.
To enable and speed up the process of sharing data and programs between computers on the network.
Help save operational costs because devices on a network can be shared (eg printers, servers, and so on).
Also read: Understanding Router
LAN Network Basic Components
LAN consists of several basic components that are arranged in such a way that it can connect several computers. The basic components of a LAN are as follows:
Workstation, which is a node or host in the form of a computer system.
Server, which is a hardware (hardware) whose function is to serve networks and workstations connected to a network.
Link, which is part of the LAN network that physically connects equipment such as workstations and servers.
Network Interface Card (NIC), which is an electronic circuit specifically designed to handle network protocols.
Network Software, which is software used to run a LAN network to function properly.
Also read: Understanding Data
LAN Advantages and Disadvantages
Each network has its own advantages and disadvantages. The advantages and disadvantages of a LAN network are as follows:
- Advantages of LAN
Various resources (resources), with a LAN, users can share resources on each computer.
Centralized data, data that exists on each computer in the LAN network can be stored in one place, namely on the server. With the server, each user can access the files on each computer.
2. Lack of LAN
Vulnerable security, this happens because every computer can be accessed by every user. There may be users who cannot maintain the confidentiality of their data and passwords so that unauthorized users can break in.
Problems with the central server, if there is a problem with the central server, it will be bad for the entire LAN network. For example, if the central server is infected with a virus then all computers on the network will be infected.
Installation tends to be expensive, basically the installation cost depends on the size of the infrastructure and geographical conditions, and the type of network topology. However, LAN installation in general requires a lot of money.
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