Network Tech World

NETWORK TECH WORLD A network device is a hardware device that helps to connect a computer or other devices to a network. There are several types of network devices, including: Routers: These devices route data packets between different networks. Switches: These devices allow multiple devices on a network to communicate with each other by forwarding data packets to the intended recipient. Hubs: These devices are similar to switches, but they do not filter the data packets based on the destination. Instead, they broadcast the data packets to all devices connected to the hub. Bridges: These devices connect two different networks and allow data packets to be transmitted between them. Modems: These devices allow computers to connect to the internet by converting data into a format that can be transmitted over a phone line or cable connection. Firewalls: These devices protect a network by blocking unauthorized access and monitoring traffic for any malicious activity. These are just a few exa

NETWORK TECH WORLD A network protocol is a set of rules and standards that define how devices on a network should communicate with each other. Network protocols govern everything from the type of cable that is used to connect devices to the way in which data is transmitted between them. There are many different types of network protocols, each of which serves a specific purpose. Some common examples include: TCP (Transmission Control Protocol): This is a connection-oriented protocol that is responsible for breaking up data into packets, transmitting the packets over the network, and reassembling the packets at the destination. TCP is a reliable protocol that ensures that all packets are delivered to their destination. IP (Internet Protocol): This is a connectionless protocol that is responsible for routing packets between devices on a network. IP is an unreliable protocol that does not guarantee that packets will be delivered to their destination. HTTP (Hypertext Transfer Protocol): Th

NETWORK TECH WORLD What is ip address and classes  An address is a reference to a specific location in memory where data is stored. In most computer systems, an address consists of a unique number that identifies a specific location in memory. In the context of programming, a class is a template for creating objects. It is a way to define the structure of an object and the methods that will operate on it. Classes can contain variables and functions (also known as methods) that are used to manipulate the data stored in the object. When you create an object from a class, you are creating an instance of that class. Address and Classes An address is a reference to a specific location in memory where data is stored. In most computer systems, an address consists of a unique number that identifies a specific location in memory. In the context of programming, a class is a template for creating objects. It is a way to define the structure of an object and the methods that will operate on it. Cl

NETWORK TECH WORL What is difference between osi model and tcp model  The OSI model (Open Systems Interconnection model) and the TCP/IP model are both frameworks that describe how data is transmitted between computers over a network. The OSI model is a theoretical model that consists of seven layers, each of which performs a specific function in the process of transmitting data. The layers are: Physical layer: This layer deals with the physical transmission of data. It is concerned with things like cables, connectors, and the actual physical transmission of data over the network. Data link layer: This layer is responsible for ensuring that the data is transmitted accurately from one device to another over a physical link. It is concerned with things like error correction and flow control. Network layer: This layer is responsible for routing data between devices on a network. It determines the best path for data to take based on things like network congestion and the availability of res

NETWORK TECH WORLD Tcp Model  The Transmission Control Protocol (TCP) is a transport layer protocol that is used to establish and maintain a connection between two computers in a network. It is a reliable, stream-oriented protocol that ensures that data is delivered in the correct order and without any errors. The TCP model is a simple, four-layer model that explains how TCP works: Application layer: This is the top layer of the model and is responsible for providing the interface between the application and the network. It is responsible for translating the messages sent by the application into a format that can be transmitted over the network. Transport layer: The transport layer is responsible for providing end-to-end communication between the two computers. It ensures that the data is delivered reliably and in the correct order, and it also provides flow control and error checking. Network layer: The network layer is responsible for routing the data across the network. It determine

NETWORK TECH WORLD  OSI Model The OSI (Open Systems Interconnection) model is a framework used to understand how communication occurs between different devices on a network. It consists of seven layers, each of which has a specific function: Physical: This layer deals with the physical aspects of communication, such as cables, switches, and routers. Data Link: This layer is responsible for establishing a link between devices and providing error-free transmission of data across a network. Network: This layer is responsible for routing data packets between devices on a network. Transport: This layer provides end-to-end communication between devices, ensuring that data is delivered reliably and in the correct order. Session: This layer establishes, maintains, and terminates connections between devices on a network. Presentation: This layer is responsible for translating data into a format that can be understood by the application layer. Application: This layer provides the interface betwe