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Computer Network Articles
Page 78 of 122
What is NGN?
NGN stands for Next Generation Network. It defines the evolution and migration of traditional circuit-switched and mobile network frameworks from distinct proprietary networks to converged IP-based networks. NGN represents an interworking environment of heterogeneous networks including wired and wireless access networks, PSTN, satellites, and transmission systems. Next-generation networks are designed to carry all types of services and data such as voice calls, audio data, and multimedia content including videos. All communication data is encapsulated in packet format, enabling efficient transmission over IP infrastructure. An NGN is fundamentally based on Internet protocols such as MPLS and IP. It uses ...
Read MoreWhat is the difference between OTT and IPTV?
Over-the-Top (OTT) and Internet Protocol Television (IPTV) are two distinct approaches to delivering video content over internet connections. While both technologies stream video content digitally, they differ significantly in their delivery mechanisms, network infrastructure, and service models. What is OTT? OTT stands for Over-the-Top Video Streaming. It refers to content delivery that bypasses traditional distribution platforms like cable, broadcast, or satellite television operators. OTT services deliver streaming media directly to viewers over the open internet, without requiring a specific internet service provider or dedicated network infrastructure. Popular examples include Netflix, Amazon Prime Video, Hulu, and YouTube. These ...
Read MoreWhat is the difference between FTP and SFTP?
File Transfer Protocol (FTP) and SSH File Transfer Protocol (SFTP) are both protocols used for transferring files between systems, but they differ significantly in security, architecture, and functionality. FTP (File Transfer Protocol) FTP is a standard internet protocol that operates over TCP/IP for transferring files between hosts. It establishes two separate connections for operation: Control Connection − Initiated by the client to port 21 on the server. This connection handles authentication, commands, and session management. Data Connection − Created on-demand (typically port 20) for actual file transfers. Multiple data connections can be opened ...
Read MoreWhat is the difference between Network Administrator and System Administrator?
Let us understand the key differences between network administrators and system administrators, two critical IT roles that often work together but have distinct responsibilities and focus areas. Network Administrator A network administrator specializes in managing and maintaining the network infrastructure that connects computers, servers, and devices within an organization. Their primary focus is on network connectivity, data transmission, and communication protocols. Key Responsibilities Network design and implementation − Planning and deploying network architectures for optimal performance Network security − Implementing firewalls, VPNs, and access controls to protect network traffic Hardware ...
Read MoreWhat is the difference between Web Conferencing and Video Conferencing?
Both web conferencing and video conferencing are online communication technologies that enable remote collaboration, but they serve different purposes and offer distinct capabilities. Web Conferencing Web conferencing is an umbrella term for various technologies that allow multiple people from different locations to hold live meetings over the Internet using TCP/IP connections. Originally developed as an enhanced audio bridge with visual elements, web conferencing focuses on content sharing and presentation delivery. Web conferencing excels at broadcasting information from one or few presenters to many participants. Key features include screen sharing, document collaboration, presentation tools, recording capabilities, and basic ...
Read MoreWhat is the difference between E commerce and M commerce?
Electronic commerce and mobile commerce are two interconnected yet distinct forms of digital business transactions. Understanding their differences helps businesses and consumers navigate the evolving digital marketplace effectively. E-Commerce E-Commerce stands for Electronic Commerce, which involves buying and selling goods, products, or services over the internet using any internet-enabled device. E-commerce encompasses all online business transactions including money transfers, fund transfers, and data exchanges conducted through digital networks. These business transactions can be completed through four main models: Business to Business (B2B), Business to Customer (B2C), Customer to Customer (C2C), and Customer to Business (C2B). E-commerce typically ...
Read MoreWhat is the importance of Computer?
A Computer Network is an interconnection of numerous computers to share an operating system, hardware, and information through a transmission mode among them. There is no geographical limitation between computers in a network, allowing global connectivity and resource sharing. Basic Computer Network Structure Node 1 Workstation Server Central Node Node 2 Workstation Node 3 Workstation Node 4 Workstation ...
Read MoreWhat is the difference between Antivirus and Trojan horse?
Let us begin by understanding what an antivirus is and how it differs from malicious software like Trojan horses. Antivirus Antivirus software is a security program designed to detect, prevent, and remove malicious software from computer systems. It works proactively by scanning files, monitoring system activities, and identifying virus signatures to protect devices from various types of malware threats. Modern antivirus software provides multiple layers of protection including real-time scanning, email protection, web browsing security, and behavioral analysis. It maintains an updated database of known threats and uses heuristic analysis to identify previously unknown malicious patterns. ...
Read MoreWhat is DWDM?
Dense Wavelength Division Multiplexing (DWDM) is an optical multiplexing technology that combines multiple optical signals of different wavelengths (colors) into a single fiber optic cable. This technology enables transmission of numerous data channels simultaneously over long distances, dramatically increasing the bandwidth capacity of existing fiber infrastructure. DWDM works by using different wavelengths of laser light to carry separate data streams. Each wavelength acts as an independent communication channel, allowing multiple signals to travel through the same physical fiber without interference. Modern DWDM systems can support up to 80 or more channels with 100 GHz (0.8 nm) spacing between wavelengths. ...
Read MoreWhat is the difference between Flow Control and Error Control?
In network communication, both flow control and error control are essential mechanisms that ensure reliable data transmission between devices. While they work together, they serve different purposes in maintaining communication quality. Flow Control Flow control is a technique used to regulate the rate at which data is transmitted between sender and receiver. It prevents the sender from overwhelming the receiver with data that cannot be processed quickly enough, avoiding buffer overflow and data loss. The primary goal of flow control is to match the transmission speed with the receiver's processing capacity. When the sender transmits data faster ...
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