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Articles by sudhir sharma
Page 2 of 98
How Applications Coexist over TCP and UDP?
When computers communicate over the internet, they follow a set of rules and protocols to ensure that data reaches its intended destination. These protocols outline how data is sent, received, and processed by computers, and are necessary for ensuring that the communication is successful. Transmission Control Protocol (TCP) is a reliable protocol that guarantees data is delivered in the correct order and without any errors. It's used for web browsing, file transfers, and email since these applications require reliable and ordered data delivery. User Datagram Protocol (UDP) is a lightweight but less reliable protocol. Unlike TCP, UDP doesn't ...
Read MoreBearer Types Used for WAP in GSM
A bearer type is a communication channel that carries data between two points in a network. In Wireless Application Protocol (WAP) over Global System for Mobile Communications (GSM) networks, multiple bearer types are available to transport WAP traffic, each with distinct characteristics and performance capabilities. Understanding these bearer types is crucial for optimizing data transmission and ensuring reliable WAP services on GSM networks. The choice of bearer depends on factors such as network availability, data speed requirements, cost considerations, and connection reliability. Types of Bearer Technologies WAP traffic in GSM networks can be carried over two fundamental ...
Read MoreDigital Audio Broadcasting (DAB)
Radio broadcasting has evolved significantly from its analog origins to embrace digital technology. Digital Audio Broadcasting (DAB) represents a major advancement in radio transmission, offering superior audio quality and enhanced features compared to traditional analog radio systems. DAB is a digital radio broadcasting standard that uses digital audio compression to transmit multiple audio streams efficiently over the airwaves. Unlike analog radio, DAB provides CD-quality sound along with additional data services such as program information, track listings, and text displays. How DAB Works DAB operates by converting analog audio signals into compressed digital data using MPEG-1 Audio Layer ...
Read MoreIBOC Technology
IBOC technology, or In-Band On-Channel technology, is a digital broadcasting technology that allows radio stations to transmit both analog and digital signals simultaneously within the same frequency band. This hybrid approach enables a smooth transition from analog to digital radio while maintaining backward compatibility with existing analog receivers. IBOC operates by embedding digital audio data alongside the existing analog signal using advanced modulation techniques. The digital portion occupies unused spectrum space within the allocated channel, allowing stations to broadcast both formats without requiring additional spectrum allocation. IBOC Signal Structure ...
Read MoreNetwork Hubs
A network hub is a basic networking device that serves as a central connection point for multiple devices in a Local Area Network (LAN). Hubs operate at the physical layer (Layer 1) of the OSI model and use a simple broadcast mechanism to enable communication between connected devices such as computers, printers, and servers. While hubs were widely used in early network implementations, they have largely been replaced by switches due to their inherent limitations. However, understanding hubs remains important for grasping fundamental networking concepts. How Network Hubs Work A network hub operates using a broadcast mechanism. ...
Read MoreFibre Channel Protocol
Fibre Channel Protocol (FCP) is a high-performance communication protocol designed to provide fast and reliable data transfers between servers and storage devices in Storage Area Networks (SANs). FCP operates by encapsulating SCSI commands within Fibre Channel frames, enabling efficient block-level data access over dedicated storage networks. How FCP Works FCP operates as a layered protocol at the transport and session layers of the OSI model. It works by encapsulating SCSI commands and data within Fibre Channel frames, which are then transmitted over a Fibre Channel network. FCP Data Flow Process ...
Read MoreIntroduction to Host Names: Understanding the Basics
In the world of computers and the internet, host names are a critical component of how devices connect to each other. A host name is a unique identifier assigned to a device or server on a network, used to identify and locate devices on the internet or any other network. What is a Host Name? A host name is a label assigned to a device on a network. It consists of a combination of letters, numbers, and hyphens, usually assigned by an administrator or network manager. Host names are case-insensitive, meaning "mydevice" and "MyDevice" are treated as identical. ...
Read MoreUniversal Asynchronous Receiver Transmitter (UART) Protocol
The Universal Asynchronous Receiver Transmitter (UART) protocol is a widely used serial communication standard in electronics and microcontroller systems. UART enables simple, reliable data transmission between two devices using minimal hardware resources, making it a fundamental protocol in embedded systems. How UART Works UART operates by converting parallel data from a device into a serial bit stream for transmission. The protocol uses asynchronous communication, meaning devices don't share a common clock signal. Instead, they rely on predefined timing agreements (baud rates) and special framing bits to synchronize data transmission. UART Data Frame Structure ...
Read MoreThe PACELC theorem
The PACELC theorem is an extension of the famous CAP theorem that provides a more comprehensive framework for understanding trade-offs in distributed systems. While CAP focuses on Consistency, Availability, and Partition tolerance, PACELC adds considerations for Latency and Consistency during normal operations. The theorem states: if there is a network partition (P), a system must choose between availability (A) and consistency (C); else (E), when the system is running normally without partitions, there is a trade-off between latency (L) and consistency (C). Understanding PACELC Components Partition Tolerance (P) Partition tolerance ensures the system continues functioning even when ...
Read MoreWhat is PeStudio
PeStudio is a popular and powerful software analysis tool that allows users to analyze executable files for various Windows operating systems. The software was developed by Marc Ochsenmeier and is widely used by malware analysts, software developers, and security researchers worldwide. This article provides an overview of what PeStudio is, how it works, and the features it provides to its users. We'll also explore its importance in cybersecurity and malware analysis. What is PeStudio? PeStudio is a static analysis tool that provides users with a detailed examination of Windows Portable Executable (PE) files without executing them. The ...
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