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Computer Network Articles
Page 114 of 122
Difference Between USB and Ethernet
USB and Ethernet are widely used data transfer technologies; however, they differ in their intended usage, data transfer speeds, and maximum cable lengths. USB specializes in connecting peripheral devices to computers, while Ethernet is designed for networking multiple devices together. Ethernet is capable of transmitting data over far longer distances than USB. Ethernet cables can be up to 100 metres long, although USB cables are normally limited to 5 metres for most versions. What is USB? USB (Universal Serial Bus) is a versatile communication protocol that has become the standard for connecting electronic devices to computers. Its ...
Read MoreOptions Field in IPv4 Header
The Options Field in the IPv4 header is a variable-length field that provides additional functionality and control over packet processing. While optional, it allows network administrators to customize packet handling for specific requirements such as routing control, security measures, and network diagnostics. The options field is located after the fixed 20-byte header and can extend up to 40 bytes. Its presence is indicated by the Header Length field value exceeding 5 (which represents the standard 20-byte header). Structure of IPv4 Header with Options IPv4 Header Structure ...
Read MoreOutdoor Mobility Model | Gauss-Markov
Mobility models simulate the movements of mobile nodes in wireless networks and are essential for ad-hoc network research. They significantly affect the performance and behavior of various network protocols. Mobility models are classified into two main categories: entity mobility models (where nodes move independently) and group mobility models (where node movements are correlated). The Gauss-Markov mobility model is an entity mobility model originally proposed for simulating personal communication service networks. This model captures realistic characteristics of outdoor mobility such as randomness, correlation, and variation in movement patterns. It uses a single tuning parameter to adjust the degree of randomness, ...
Read MoreOverview of Desk Area Network (DAN)
A Desk Area Network (DAN) is a specialized network architecture designed for multimedia workstations that enables direct connection of multimedia devices and peripherals to the network. DAN uses Asynchronous Transfer Mode (ATM) technology to provide high-speed, reliable communication between multimedia devices, workstations, and peripheral equipment without requiring data to pass through the central workstation. Before DAN, multimedia devices like cameras, audio equipment, and displays had to communicate through the workstation, creating bottlenecks and reducing performance. DAN eliminates this limitation by allowing devices to connect directly to the network infrastructure. Architecture of DAN The DAN architecture consists of ...
Read MoreAdvantages and Disadvantages of Internet
The Internet is a global network of interconnected computers that enables billions of devices worldwide to share data, communicate, and access services. From social media platforms like Instagram and Facebook to essential services like online banking and e-commerce, the Internet has become an integral part of modern life. Organizations, governments, and individuals rely on Internet connectivity for everything from remote work and education to healthcare and entertainment, making it nearly impossible to imagine our world without this vast digital infrastructure. Internet: Global Network Connection Internet ...
Read MoreWhat are Hub and Switch in Computer Network?
A hub and a switch are fundamental networking devices used to connect multiple devices in a Local Area Network (LAN). While both serve the purpose of connecting computers and enabling communication, they operate at different OSI model layers and handle data transmission in distinctly different ways. Hubs A hub is a physical layer networking device that connects multiple devices in a network. It operates as a simple repeater, amplifying and forwarding electrical signals without any intelligence about the data content. When a data frame arrives at any port of a hub, it broadcasts the frame to all ...
Read MoreWhat are Routers in Computer Network?
Routers are networking devices operating at layer 3 or a network layer of the OSI model. They are responsible for receiving, analyzing, and forwarding data packets among the connected computer networks. When a data packet arrives, the router inspects the destination address, consults its routing tables to decide the optimal route and then transfers the packet along this route. Router Operating at Network Layer Network A 192.168.1.0/24 ...
Read MoreDifferences between Pure Aloha and Slotted Aloha
The Aloha Protocol allows several stations to send data frames over the same communication channel at the same time. This protocol is a straightforward communication method in which each network station is given equal priority and works independently. Aloha is a medium access control (MAC) protocol for transmission of data via a shared network channel. Using this protocol, several data streams originating from multiple nodes are transferred through a multi-point transmission channel. There are two types of Aloha protocols − Pure Aloha and Slotted Aloha. In this article, we will highlight the major differences between these two protocols ...
Read MoreWhat are the elements of Transport Protocol?
To establish a reliable service between two machines on a network, transport protocols are implemented, which somehow resembles the data link protocols implemented at layer 2. The major difference lies in the fact that the data link layer uses a physical channel between two routers while the transport layer uses a subnet. Transport protocols must address several critical elements to ensure reliable data communication across networks. These elements work together to provide end-to-end communication services between processes running on different machines. Transport Protocol Elements Service Types ...
Read MoreComponents of Storage Area Network (SAN)
Storage Area Network (SAN) is a dedicated, high-speed network that provides block-level data storage access to multiple servers from a centralized pool of storage devices. Unlike traditional direct-attached storage, SAN creates a separate network infrastructure specifically for storage traffic. The primary purpose of SAN is to enable data transmission between servers and storage devices, as well as facilitate data transfer between different storage systems. This architecture allows organizations to consolidate storage resources and provide scalable, high-performance storage access to multiple servers simultaneously. Storage Area Network Architecture ...
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