The Tech Storror

 Internet The Internet is the dominant medium in the computer networking process of today's world. Thanks to the Internet, all the computer users of the entire world have been able to be bound in the same circle. As a result, mutual cooperation, solidarity, etc. have increased unexpectedly. So some call the Internet a network of networks. However, it can be said that the Internet is the dominant force in all computer networking in the current world. The “Internet” is dominating the field by bringing the vast empire of the computer world into its hands. Thanks to the Internet, the communication system has been greatly improved. People can get news from different parts of the world in a short time and at a low cost. You can send the necessary information to the nearest person in any part of the world in a moment. Milestones of internet speed. It plays an immense role in today's communication system and information exchange. NET family members will find solutions to most of their

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

Different generations of mobile telephone systems A stage or stage of increasing use and development of mobile phones is called mobile phone generation. The mobile technology invented so far can be divided into four generations. Below is a detailed discussion about its generation. First generation: In 1983, the first generation of mobile phones commercially introduced in North America, called AMPS (Advanced) Mobile Phone System) used AMPS analog signals to communicate. Its link channels are separated by FDMA (Frequency Division Multiple Access) method. This system uses two analog channels, namely — forward and reverse, base station reverse. Besides, there were two other mobile phone systems in operation called first generation CT/1 and NMT. First generation mobile systems have the following features -- (i) This generation uses analog system of radio signals. (ii) Cell signal encoding method is FDMA. (iii) Mobile phones are smaller in size and lighter in weight than the typical telepho

Types of mobile or cellular sets  Mobile phone service providers are offering various services to the customers. Due to different uses of mobile phones, nowadays people are using different types of mobile phone sets. Based on the structural aspects and multipurpose use of the mobile phone, mobile or cellular phone sets can be divided into several categories. namely -- (i) Basic Mobile Phones (ii) Camera mobile phones (iii) Music or MP-3/MP-4 mobile phones (iv) Video mobile phones (v) Smart mobile phone (vi) PDA or Note mobile phone Types of mobile phone technology: The current mobile phone technology can be mainly divided into two categories, namely--  (i) GSM = Global System for Mobile Communication, technology and (ii) CDMA (CDMA Code Division Multiple Access) technology.   GSM  It was first named Group Special Mobile (GSM) in 1982, then the definition of the name was changed to Global System for Mobile Communication (GSM). The third generation version of GSM technology is standardiz

Mobile telephone system A system designed to exchange data and information between two mobile devices or one mobile and one fixed device is called a mobile telephone system. The mobile device is called Mobile Station (Mobile Station or MS) or Mobile Unit or Mobile Set and the fixed device is called Land Unit. A mobile service provider divides its coverage area into smaller segments. Each division is called a cell. From this cell another name of mobile phone has been given as cellular phone. A cell consists of an antenna and a small office, the small office with the antenna is called a base station. Each base station is controlled by a mobile switching center from where call connection, call information recording, billing system are controlled in a computerized manner. Cell size usually depends on population density. Cell sizes can typically range from 1 mile to 12 miles. Cellular phones are now also known as mobile phones. Nowadays, data such as audio, video, image, text etc. can be ex

Electronic commerce or e-commerce The full name of E-Commerce is Electronic Commerce. Electronic commerce refers to the online process of exchanging business information, maintaining relationships between sellers and buyers, producing goods or services, marketing, selling, delivering, servicing and paying prices using the Internet. In today's internet age, e-commerce does not mean only buying and selling of goods online or on the internet. On-line product and service delivery excellence, on-line processing development, marketing management expansion and dissemination, global internet e-commerce community formation implies. Use of electronic commerce: E-commerce requires the use of information technology, telecommunication systems and internet technology. Important uses of e-karmas are-- (i) E-commercemust ensure accurate information, marketing, transaction execution and secure payment settlement procedures for the buyer. (ii) Trade and business partnerships rely on the Internet and

Protocol: A protocol is a set of rules by which a computer communicates with another computer. Protocol is also called by some as the language of network. That is, the accepted rules for proper communication between networked computers are called protocols Introduction to Communication Protocol : A computer network connects numerous computers. System means computer, terminal, remote sensor or device that can receive data. Now the equipment may not be manufactured by the same manufacturing company. After data is sent from one system and flows through the network, the system must be built, the network established, and the software developed to be received accurately and intelligibly by the other system, but following the rules. If the software vendor companies develop software following the protocol, it will be possible to communicate between the computers of all the companies. After all, the protocol is a standard for establishing communication between the computer and the terminal. L

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

Types of Networks Based on Distance Types of computer networks according to the extent: Based on the location of the computers used in the network system, that is, depending on the geographical extent, computer networks are mainly divided into four parts; namely-- (i) Personal Area Network or PAN (PAN) (ii) Local Area Network or LAN (LAN) (iii) Metropolitan Area Network or MAN (MAN) (v) Wide Area Network or WAN. PAN, LAN, MAN and WAN  -- Personal Area Network or PAN: The full name of PAN is Personal Area Network. A system of personal devices near a person is called a Personal Area Network or PAN. However, devices connected to the network may not be private. Pans are typically several meters (10 m) wide. Pan can be connected by USB Bus and Fireware Bus. Among the devices used in PAN are laptops, PDAs, mobiles, printers etc. -- Local Area Network or LAN: If one or more computers are networked in a specific building or campus, then it will be known as a Local Area Network. Its abbreviatio

Basic Concept on Computer Network Network A network is a system where everyone can share information or work together. For example, suppose the postal department delivers letters across the country. For this the postal department has a nationwide network. They have different offices in different places in this network, there are some rules and regulations. Here every part of the network is working. If the postal department does not have such work then they cannot work. Such networks can be used in the case of computers. Network consists of different devices, which are connected by different communication links. Devices can be computers, printers etc. A computer is part of a network when it is connected to one or more other computers to share information. A minimum of two computers is required to network. Apart from that, the rules of how one computer will communicate with another computer, what their language will be, etc. are specified in advance. Computer network A computer network i

Difference Between Base Band and Broad Band Transmission Systems: Base Band: (1) In a baseband transmission system, the data sent from the computer is sent unaltered over the network connection. (2) Modulation is not required in baseband transmission systems. (3) In a baseband transmission system, multiple signals cannot be transmitted over a single pair of wires simultaneously. (4) Low cost in baseband transmission system. (5) Benefits are less available in baseband transmission systems. Broadband: (i) In broadband transmission system, the information received from the computer is modulated by high frequency and sent over the network connection. (ii) Amplitude modulation and demodulation are required in broadband transmission systems. (iii) In broadband transmission system it is possible to establish multiple connections simultaneously through one connection path (iv) Cost of broadband transmission system is high. (v) More benefits are available in broadband transmission systems. Repe