The Tech Storror

Network Sharing and Security Network Sharing: Network sharing is a feature that allows sharing of resources over a network, such as files, documents, folders, media, etc. It is made accessible to other user computers on networks. Network sharing enables data to be accessed across multiple devices or at the same time. By connecting a device to a network, other user devices on the network can share and exchange information through the network. File Sharing: File sharing is the practice of distributing or providing access to digital media, such as computer programs, multimedia (audio, images, and video), documents, or e-books. File sharing can be saved in different ways. Common methods of storage, transmission, and dissemination are manual sharing uses such as removable media, centralized computer servers, web-based hyperlinked documents, and distributed peer-to-peer networking. Network Sharing in Windows Operating System: Windows 7 and Windows 8x have the same network sharing settings...

 Hybrid network A mixed or hybrid network is essentially a combination of client-server and peer-to-peer networks. Generally, the client-server portion dominates in a hybrid network. However, in addition, there are sparsely coupled peer-to-peer network segments. Advantages of a hybrid network are: (i) Client-server applications can be housed and managed centrally. (ii) Users can control access to their respective computer resources and share their resources. Disadvantages of hybrid network are- (i) Having two types of networks makes it difficult for users to access the network. (ii) Need to remember different passwords for workgroups and servers/domains. (iii) Resources are located on different computers and cannot be managed centrally. Different versions of the same file can be scattered across different computers. (iv) Difficulty backing up files stored on different workstations. Network architecture Designing and implementing an effective network with respect to communication ru...

Client-server network Usually when we receive any data, the computer from which we receive the data or service is called server. We are clients or consumers because we serve from it. In this network, both workstation and server computers have the opportunity to work autonomously with their own CPU and memory. It consists of a graphical user interface or front end program on the client workstation and other facilities. It stores the back end server programs of one or more servers. In other words, a suitable network for centrally storing data, ensuring security, running various applications and running the network is a client-server network. In this network, one computer owns the resource, and other computers in the network use those resources. The computer that shares the resource is the server, and the computers that share the resource are the clients. All the resources of the network are stored on the server so the resources can be managed from the center. Security is ensured as all u...

Data Transmission System Asynchronous Transmission: A data transmission system in which characters are transmitted from sender to receiver is called asynchronous transmission. In this method the sender does not require any primary storage medium for data transmission. Main features of asynchronous data transmission: (i) The sender does not require any primary storage device for data transmission. (ii) In this method of data transmission the sender can transmit the data at any time and the receiver can also transmit it. (iii) In this method of data transmission, the time between the transmission of one character and the transmission of another character may vary rather than be equal. (iv) Each character has a start bit at the beginning and end transmission is also called start/stop transmission. Advantages, Disadvantages and Uses of Asynchronous Data Transmission Advantages of asynchronous data transmission: (i) At any time the sender can send data and the receiver can receive it. (ii) ...

Connectors The cable connector is the daughter device between the network card and the cable. That is, it connects the network cable and (NIC). Notable among cable connectors are coaxial cable, 10 bit, Ethernet etc. Among them, 10 bit connector is comparatively much faster, reliable and widely used. The 10-pin connector looks a lot like a telephone wire. Some network cards support multiple connector types, thus providing multiple ports. Such cards are called combo cards. Recently, Ethernet technology has gained great popularity in the world of networking, to say that now Ethernet is a dominating (Dominating) technology. For that reason, if the network card of the computer is of combo type, then it is possible to upgrade it to use Ethernet technology. The following three types of connectors are commonly used in networks. These are-- a) RJ-45: It is used to connect UTP cable to network interface card or NIC. This connector has a total of 8 contact pins. These 8 pins are used in different...

Cloud Computing  Using different computing resources, such as hardware and software, through a computer network system is called cloud computing. The method used to access some global facilities by connecting to the Internet is called cloud computing. Through this, the remote user gets the data, software and results of the processing through the computer. Cloud computing services started in 2005. Amazon.com's Elastic Compute Cloud (EC2) was the first to offer this service. Although the concept of cloud computing is not new. The concept of central computing was introduced in the sixties. According to that idea, big companies plan to install a mega computer in every city. City dwellers will receive computer services through lines like electric or dish lines. The project did not materialize due to network speed limitations. The concept of grid computing in the 1990s is also basically a concept of cloud computing. At present, famous companies like IBM, Microsoft, Google etc. are provid...

Computer Networking  Computer networks are an important system of communication in today's world. A computer network refers to the connection between two or more computers. The special system in which data transfer, electronic mail transmission, teleconference etc. is done quickly through cable, modem or satellite is called a computer network. Concept of Network: A network can be created by connecting small, low-power microcomputers to a powerful or high-powered server-rich computer. Computers can be side by side, in the same nearby location, or from one city to another, or even from one country to another. The networking process started through the computer network Mini and Mainframe Computer but nowadays personal computer is widely used for networking. The interconnection and ability of multiple computers and other devices to work together in offices, courts, educational institutions or other workplaces under computer networks has brought revolutionary mobility to information exc...

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 techn...

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...

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 abbrevi...

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...

Social network A social network is a network of global social networking systems. It is free to join. Users can add members, send messages and update and exchange personal information, as well as a user can join city, work, school and regional networks. Popular social networks Facebook: English Facebook is a global social networking website, which was established on February 4, 2004. It is free to join. - is owned by Facebook Inc. Users can add friends, send messages, and update and share their personal information as well as connect to a user's city, workplace, school, and regional networks. The website is named after the book given by the university administration on the occasion of better communication between students at the beginning of the academic year. Twitter: A social networking and microblogging website where users can share and publish messages of up to 140 characters. These messages are called Tweets. Twitter members' tweets can be seen on their profile pages. Tw...

Gateway: Gateway is a medium, which acts as a bridge or bridge between two networks so that many computers can exchange data together. That is, the device used to connect different types of networks is the gateway. It translates the protocol. It works on layer 7 of the OSI model. Switch: Network switch and network hub are the main pillars of computer networking. In networking, a switch is a device that performs filtering and packet forwarding when exchanging data packets between different parts of a local area network. The switch and SI layer operate at the data link layer. But sometimes it also works at network layer. A local area network (LAN) that uses switches to communicate between its different parts is called a switched LAN. Switches are the network layer that additionally processes data (Layer 3) and are often referred to above as Layer 3 switches. The first Ethernet switch was introduced in 1990. Functions of switches: Network switches are switches connected to most modern E...