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Articles on Trending Technologies
Technical articles with clear explanations and examples
What is the difference between SSH and SFTP?
Let us begin by understanding the fundamental concepts and differences between SSH and SFTP. SSH (Secure Shell) SSH (Secure Shell) is a cryptographic network protocol that enables secure communication between two computers over an insecure network, including the internet. It provides encrypted remote login and command execution capabilities, replacing insecure protocols like Telnet, rlogin, and rsh. SSH was developed by SSH Communications Security Ltd to establish secure connections with remote devices. It supports strong authentication methods and encrypted data transmission using public-key cryptography, making it the standard for secure remote administration. SSH ...
Read MoreTCL Script to Simulate Link State Routing in NS2
Network simulation has become essential for evaluating routing protocols and network behaviors in controlled environments. NS2 (Network Simulator 2) is a widely-used discrete event simulator that employs TCL (Tool Command Language) scripts to automate network simulations. This article demonstrates how to implement a TCL script for simulating Link State Routing in NS2, enabling researchers to study routing protocol performance and network topology behaviors. Link State Routing Link State Routing is a routing protocol where each node maintains complete network topology information in a Link State Database (LSDB). Nodes exchange link state advertisements to build this database and ...
Read MoreDifference between iCloud and Box
Different cloud services available on the web offer different features. Unfortunately, due to busy schedules, everyone may not have time to try each service. Also, most services are not free. Let us distinguish two major cloud services: iCloud and Box. iCloud iCloud was launched on October 12, 2011, by Apple Inc. Apple devices are known for their unique and creative interface along with excellent security. The cloud service offered by them is iCloud, which has particular loyalty to its customers. It provides two plans: a web-only plan and an Apple user plan containing exclusive features that are ...
Read MoreDifference between Google Drive and HCL Connections
We know that different companies have been trying to help people use cloud computing on the Internet in the past few years. As a newbie, it is not easy to choose from the different types of cloud services out there because most of the services are not free, and it might take a tremendous amount of time to try every service. Let us compare two major services: Google Drive and HCL Connections. Note that while Google Drive is primarily a cloud storage service, HCL Connections is an enterprise collaboration platform with different core functionalities. Google Drive Google ...
Read MoreWhat are static routing algorithms in computer networks?
A static routing algorithm is a form of routing that occurs when a router uses manually configured routing entries rather than automatically discovered routes. In static routing, network administrators manually add routing entries to the routing table. Static routes are fixed and do not change automatically when the network topology is modified or reconfigured. Unlike dynamic routing protocols, static routes remain in the routing table until manually removed or modified by an administrator. Static and dynamic routing are not mutually exclusive approaches. They are commonly used together on routers to maximize routing efficiency and provide backup routes when ...
Read MoreDifference between Cache and Cookies in Computer Network
A cache is a data storage mechanism that allows users to retrieve data or files on computers quickly, while cookies are small text files that web browsers save on users' computers to store preferences and session information. Both cache and cookies are essential components of web browsing that enhance user experience, but they serve different purposes and operate in distinct ways. What is Cache? A cache is a temporary storage layer that stores frequently accessed data to reduce retrieval time and improve performance. Hardware and Software Implementation − Caches exist in both hardware (CPU ...
Read MoreWhat is IrDA (Infrared Data Association)?
IrDA represents the Infrared Data Association, a universal consortium of hardware and software manufacturers that creates and supports interoperable solutions for infrared (IR) data networking for computer networks, connections, and different networking applications. Infrared communication uses a transceiver (a set of transmitters and receivers) in both devices that connect. Specialized microchips support this functionality, and several devices may require specific software for synchronized communication. An example is the special provision for IR in Microsoft's Windows 95 operating system. In the IrDA-1.1 standard, the maximum data frame size is 2048 bytes and the maximum transmission rate is 4 Mbps. ...
Read MoreDifferentiate between Circuit Switching, Message Switching, and Packet Switching
Circuit switching, message switching, and packet switching are three fundamental approaches used in telecommunications networks to establish communication paths and transfer data between devices. Each method has distinct characteristics regarding how connections are established, data is transmitted, and network resources are utilized. Circuit Switching In circuit switching, a dedicated physical path is established between the sender and receiver before any data transmission begins. This dedicated route remains active throughout the entire communication session and is released only after the connection is terminated. The traditional telephone network (PSTN) is the most common example of circuit switching. When you ...
Read MoreTCP and UDP Server using Select
When it comes to server-client communication, two protocols are commonly used: TCP and UDP. Transmission Control Protocol (TCP) is a connection-oriented protocol that ensures reliable delivery of data packets between network devices. On the other hand, User Datagram Protocol (UDP) is a connectionless protocol that offers faster data transmission but with no guarantee of delivery or order. In this article, we will explore how to build a server using both protocols in Python programming language. We will also discuss the use of select() function in handling multiple client connections efficiently without the overhead of threading. Setting up the ...
Read MoreDesign Issues in Data Link Layer
The Data Link Layer is the second layer in the OSI model, positioned between the physical layer and network layer. It manages node-to-node communication and implements essential functions like error control, flow control, and frame management. This layer provides a reliable service interface to the network layer while handling frame formatting, error detection, and link management. Understanding its design issues is crucial for building efficient network protocols. Data Link Layer Structure Network Layer LLC (Logical Link Control) ...
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