Connection-oriented and Connection-less Services are used to establish connections between two or more devices. Connection-oriented Services A connection-oriented service is one that establishes a dedicated connection between the communicating entities before data communication commences. It is modeled after the telephone system. To use a connection-oriented service, the user first establishes a connection, uses it and then releases it. In connection-oriented services, the data streams/packets are delivered to the receiver in the same order in which they have been sent by the sender. Connection-oriented services may be done in either of the following ways − Circuit-switched connection: In circuit ... Read More

When several computers are connected together and are able to communicate with one another, it is called a computer network. Computer networks are designed to share data and information among the computers of the network. Depending on the operating geographical area, computer networks are of the three major types, namely LAN, MAN, and WAN. All the three computer networks are designed for the same purpose, i.e., for sharing information among the computers. But, they are different in many ways, which we are going to highlight in this article. Let's start with some basics of LAN, MAN, and WAN. What ... Read More

A WAN in general is a network of local area networks (LANs) that link to other LANs via telephone lines and radio waves. WAN connections can include both wired and wireless technologies. Wired WAN services include carrier Ethernet, commercial broadband Internet links, etc., whereas wireless WAN technologies include cellular data networks like 4G LTE, public Wi-Fi, satellite networks.LANs are privately owned and span a smaller geographical area (restricted to a few kilometers). It can be used in various settings, including offices, residences, hospitals, and schools. The setup and management of a LAN is quite straightforward.Go through this article to find ... Read More

CRT and LCD are both display devices. CRT is an old technology whereas LCD is modern one. One major difference between CRT and LCD is in the technology used for image formation. The CRT display produces an image by using an electron beam, while LCD display produces an image on the screen using liquid crystal display. What is a CRT? CRT stands for Cathode Ray Tube. CRT displays produce an image on the screen by using a sharp beam of electrons that is highly focused to hit a phosphor screen present in front of the tube. The important components of ... Read More

After the launch of the first generation mobile network in the early 1980s, the mobile wireless communication system has gone through numerous stages of evolution in the last several decades. Because there was such a high demand for new connections throughout the world, mobile communication standards progressed quickly to accommodate more users. In this brief article, let's have a look at the features offered by the early generation mobile standards.1G ProtocolThe first generation of wireless cellular technology is referred to as 1G. These are analog telecommunications standards that were launched in the 1980s and lasted until 2G digital telecommunications superseded ... Read More

In computer programming, the concept of reusable code refers to the utilisation of previously developed software in the construction of new software. Reusability of code is recognised as an essential component of productive functionality. Establishing associations between classes is one method that object-oriented programming uses to encourage this.In object-oriented programming, there are two primary ways to construct these relationships: inheritance and composition.In object-oriented programming (OOP), inheritance refers to the process through which an object can take on the properties of one or more other objects. In OOP, it is one of the most powerful concepts for establishing code reusability. When ... Read More

Both SQL and NoSQL Databases have their set of advantages and disadvantages. SQL databases can be considered when you are looking for data consistency, reliability, integrity, and when the data is structured. NoSQL databases are a much better option if the data is large, semi-structured, or unstructured and you are looking for faster storage and retrieval of data.With so many databases available in the market, it can get a little challenging for an enterprise to decide whether they should choose an SQL Database or a NoSQL Database. This article will show you the key differences between the two types of ... Read More

The process to alter the structure of a database is basically categorized into two ways, one is Normalization and the other is Denormalization. The basic difference between normalization and denormalization is that the database normalization removes the redundancy of data and anomalies in a poorly designed table, while denormalization combines multiple table data into one so that it can be queried quickly. Read through this article to find out more about normalization and denormalization and how they are different from each other. What is Normalization? Normalization is used to remove redundant data from the database and to store non-redundant and ... Read More

The demand for different programming languages is constantly shifting due to the creation of new mobile and online applications. Additionally, emerging programming languages provide useful capabilities for the construction of powerful websites. A study done by developers at 2020 shows that JavaScript is widely considered to be one of the most popular technologies.Both NodeJS and AngularJS are open-source technologies that are based on JavaScript and are in wide use. AngularJS is a framework written in JavaScript, while NodeJS is a runtime environment that works across several platforms.Angular is a client-side JavaScript framework that allows developers to construct dynamic web applications ... Read More

Both C and C++ are middle-level programming languages that are used for developing system software as well as application software. C is a procedural programming language which have low-level memory access and minimal runtime; therefore, it is used for writing operating systems, embedded systems, and system-level programs. whereas C++ is just an extension of the C language, which is both a procedural programming language and object-oriented. Therefore, having extra features that make it suitable for game development, GUI applications, and high-performance software. C Programming Language C is a general-purpose, procedural programming language, which was developed by Dennis M. Ritchie at ... Read More