The Tech Storror

Hotspot, Wi-Fi, Wi-Max, Bluetooth Hotspot: Hotspot is a type of wireless network that provides internet connection to mobile computers and devices such as smartphones, PDAs, tablets, netbooks, notebooks or laptops. Currently, the three popular hotspot technologies are – 1. Wi-Fi 2. Wi-Max 3. Bluetooth Wi-Fi: Wi-Fi or wireless fidelity is a popular wireless technology that uses radio waves to connect any electronic device to a high-speed Internet connection or computer network to exchange data. It is technically known as IEEE 802.11b. Wi-Fi technology is relatively faster (11 Mbps) and less expensive than standard Ethernet and other common wired LAN technologies. Thus, the Wi-Fi wireless LAN connects laptop PCs, PDAs, smart phones, tabs and other devices with Wi-Fi modems to the rapidly growing business, public and the planet to easily connect to the Internet and other networks. A faster version (802.11g) with a speed of 54 Mbps promises widespread use of this technology. Features of Wi...

Network Topology Computer network topology: The way computers are connected to each other in a network is called topology. This topology plays a special role in network design. The appropriate topology needs to be selected based on which network will be used for which task. Types of network topology: Computer network topology is mainly of two types, namely- (i) Physical Topology and (ii) Logical Topology. Physical topology: Networking media is associated with various network devices. That layout is called physical topology. Physical topology can be divided into the following six categories, namely-- (i) Bus Topology (ii) Ring Topology (iii) Star Topology (iv) Tree Topology (v) Mesh Topology (vi) Hybrid Topology Bus Topology: In bus topology all the computers (nodes) are connected with a single connection line. Here the connection line is usually called a bus. When a computer sends a message to another computer, the message signal travels through the connection line and reaches all t...

Communication model : In the early days of computer networking, various manufacturers made communication software in their own way. Due to the different protocols of these hardware-based software, the software made by one company could not exchange data with the software made by another company. This would be a big problem. Later, a committee was formed from ISO (International Standard Organization) to eliminate this problem. This committee created a protocol model called OSI (Open System Interconnection) to create standard standards for harmonizing all communication software. This model is known as communication model. OSI (Open System Interconnection) Model: The OSI model describes how communication between computers and other networking devices will be developed. The International Organization for Standards (ISO) started working on this model in 1974. The need for the OSI model is felt so that different networking device manufacturers can produce their devices following the same sta...