Aspin Chakma

The 7 Layers of the OSI model OSI ( Open Systems Interconnection ) is a reference model for how applications communicate over a network. A reference model is a conceptual framework for understanding relationships. The purpose of the OSI reference model is to guide vendors and developers so the digital communication products and software programs they create can interoperate, and to facilitate a clear framework that describes the functions of a networking or telecommunication system. Most vendors involved in telecommunications make an attempt to describe their products and services in relation to the OSI model . And although it is useful for guiding discussion and evaluation, OSI is rarely actually implemented as-is. That's because few network products or standard tools keep related functions together in well-defined layers, as is the case in the OSI model. The TCP/IP protocol suite , which defines the internet, does not map cleanly to the OSI model .

Different networking devices have different roles to play in a computer network. These network devices also work at different segments of a computer network performing different works. In our new series after network topology, we talk about different networking devices like a switch, router, hub, bridge, etc. Computer networking devices are known by different names such as networking devices , networking hardware, network equipment, etc. However, all of the names mean the same but have got different purposes. After covering different topics on network topologies and their advantages and disadvantages, we are here once again with a series on the network devices .

The way that computers are connected to each other on a  network is topology . This is basically a Physical layout of the network ( physical layout ). The physical layout is how computers, printers, and other  devices  are connected to each other on the network. The network system was developed by combining different computers. The main purpose of this coordinate system is to use the necessary information and exchange of resources, and to do these tasks requires a well-controlled path or medium, which may be a cable or some other special system, which ensures information from beginning to end. Sure exchange. Network design is basically the right design and management of information-exchange data. How each computer is interconnected and forming a network is called  network topology . The network topology determines how data and information will flow between every station on the network. The main purpose of the  computer network  is to create data and i...

The Internet Protocol ( IP ) is a protocol, or set of rules, for routing and addressing packets of data so that they can travel across networks and arrive at the correct destination. Data traversing the Internet is divided into smaller pieces, called packets. IP information is attached to each packet, and this information helps routers to send packets to the right place. Every device or domain that connects to the Internet is assigned an IP address, and as packets are directed to the IP address attached to them, data arrives where it is needed. Once the packets arrive at their destination, they are handled differently depending on which transport protocol is used in combination with internet protocol (IP) . The most common transport protocols are TCP and UDP. An Internet protocol (IP) address is a unique identifier assigned to a device or domain that connects to the Internet. Each IP address is a series of characters, such as '192.168.1.1'. Via DNS resolvers, which ...

A virtual local area network ( VLAN ) is a logical group of workstations, servers, and network devices that appear to be on the same LAN despite their geographical distribution. A VLAN allows a network of computers and users to communicate in a simulated environment as if they exist in a single LAN and are sharing a single broadcast and multicast domain. virtual local area network ( VLANs ) are implemented to achieve scalability, security, and ease of network management and can quickly adapt to changes in network requirements and relocation of workstations and server nodes. Higher-end switches allow the functionality and implementation of VLANs . The purpose of implementing a virtual local area network ( VLAN ) is to improve the performance of a network or apply appropriate security features. A broadcast domain is a network segment in which if a device broadcasts a packet then all the devices in the same broadcast domain will receive it. The devices in the same broadcast domain wi...

Inter VLAN Routing is the process of forwarding network traffic from one VLAN to another VLAN using a router. As we know, the VLAN trunk allows you to communicate between two or more same VLAN on different switches. Same as this, Inter VLAN routing allows you to communicate between two or more completely different VLAN in the same switch or other with the help of layer device Router. Types of Inter VLAN Routing : Inter VLAN can be configured in three different ways: 1.        Traditional Method 2.        Router on stick 3.        Inter VLAN in layer 3 switch