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Articles on Trending Technologies
Technical articles with clear explanations and examples
What is Private Branch Exchange (PBX)?
A Private Branch Exchange (PBX) is a private telephone network used within organizations to manage internal and external communications. Acting as a miniature telephone company central office, a PBX serves as the switching and routing hub for all voice communications within an enterprise. PBX systems enable organizations to create their own internal telephone network, allowing employees to communicate internally for collaboration and externally with customers, partners, and contacts through various channels such as VoIP (Voice over Internet Protocol) or ISDN (Integrated Services Digital Network). PBX System Architecture PBX ...
Read MoreProtocol and Protocol Hierarchies
A protocol is a set of rules and conventions agreed upon and followed by the communicating entities for data communication. A protocol outlines the what, how, and when of a communication. Three Aspects of a Protocol Syntax − It defines the format of data that is to be sent or received. Semantics − It defines the meaning of each section of bits that are transferred. Timing − It defines the time at which data is transferred as well as the speed at which it is transferred. ...
Read MoreAdvantages of Virtual Machines over Portable Containers
Virtual machines (VMs) and portable containers are two popular technologies used for virtualization and deployment of applications. While containers offer advantages like lightweight deployment and faster startup times, VMs provide superior benefits in specific scenarios requiring enhanced security, complete isolation, and compatibility with diverse operating systems. Security Advantages VMs provide a higher level of security by creating complete isolation between the guest operating system and the host system. Each VM runs with its own kernel, creating a strong security boundary that prevents vulnerabilities within one VM from affecting the host or other VMs. For example, if a ...
Read MoreGenerative Chatbots vs Rule Based chatbots
In the dynamic field of artificial intelligence, chatbots have emerged as transformative tools, revolutionizing customer interactions and service delivery. Among the diverse array of chatbot approaches, Generative Chatbots and Rule-Based Chatbots stand out as two distinct methodologies. This article explores the fundamental differences between these categories, examining their underlying mechanisms, advantages, disadvantages, and practical applications in conversational AI. How Generative Chatbots Work Generative chatbots are powered by artificial intelligence, specifically large neural network models called foundation models such as transformers, BERT, and GPT. These chatbots excel in open-ended interactions, adapting to diverse user inputs and contexts by leveraging ...
Read MoreWhat is Lifi?
Li-Fi (Light Fidelity) is a wireless communication technology that uses visible light spectrum instead of radio waves for data transmission. The technology utilizes standard LED light bulbs equipped with special chips that modulate light intensity to transmit optical data signals, which are received by photoreceptors on client devices. A Li-Fi network transmits data by rapidly changing the intensity of LED light thousands of times per second − much faster than the human eye can detect. These intensity variations create digital signals that can carry internet data to devices like computers, tablets, and smartphones. The receiving device uses a photodetector ...
Read MoreThe 802.16 MAC Sublayer Frame Structure
The IEEE 802.16 set of standards lays down the specifications for wireless broadband technology. It has been commercialized as Worldwide Interoperability for Microwave Access (WiMAX) that is responsible for the delivery of last-mile wireless broadband access. The IEEE 802.16 MAC sublayer is the most important sublayer and concerned with channel management. It has been designed for connection-oriented channel management for point-to-multipoint (PMP) broadband services. Generic MAC Frame Structure The frame format of a generic MAC frame consists of multiple fields that control data transmission and ensure reliability: IEEE 802.16 Generic MAC Frame ...
Read MoreAIMD Algorithm
AIMD (Additive Increase Multiplicative Decrease) is a fundamental congestion control algorithm used in computer networks to dynamically adjust data transmission rates. It helps prevent network congestion while maximizing throughput by proactively increasing sending rates during low congestion and aggressively reducing them when congestion is detected. AIMD is most notably implemented in TCP (Transmission Control Protocol) congestion control, making it one of the most widely deployed network algorithms on the Internet today. How AIMD Works The AIMD algorithm operates on two core principles: Additive Increase − When no congestion is detected, incrementally increase the congestion ...
Read MoreHow to Access Dark Web Safely?
The Dark Web is a hidden portion of the internet that requires specialized tools to access. Unlike the surface web that most people use daily, the Dark Web operates on encrypted networks and provides anonymity to its users. While it has legitimate uses such as protecting privacy in oppressive regimes, it also hosts illegal activities, making safe access crucial. Understanding how to navigate this hidden realm safely involves using proper tools, maintaining security practices, and exercising extreme caution to avoid dangerous or illegal content. What is the Dark Web? The Dark Web is a subset of the ...
Read MoreConnection-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 Service Flow Sender Receiver 1. Connection Request 2. ...
Read MoreSymmetric-Key Signatures
A symmetric-key signature is a cryptographic mechanism that uses a shared secret key to provide authentication and integrity verification for electronic messages. Unlike traditional digital signatures that use public-key cryptography, symmetric-key signatures rely on the same key for both creating and verifying the signature. In symmetric-key cryptography, both the sender and receiver share the same secret key. This shared key is used not only for encryption and decryption but also for generating and verifying message authentication codes (MACs) that serve as signatures. Symmetric-Key Signature Process Sender Message ...
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