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Internet Articles
Page 54 of 88
What are noiseless and noisy channels?
Data link layer protocols are categorized based on whether the transmission channel is noiseless or noisy. This classification determines the complexity of protocols required, with noiseless channels needing simpler protocols and noisy channels requiring sophisticated error control mechanisms. Data Link Layer Protocol Classification Noiseless Channels • Simplest Protocol • Stop & Wait No error control needed Noisy Channels • Stop & Wait ARQ • Go-Back-N ARQ • ...
Read MoreNetwork Devices (Hub, Repeater, Bridge, Switch, Router, Gateways and Brouter)
Network devices or networking hardware are the physical devices that are used for establishing connections and facilitating interaction between different devices in a computer network. Each device operates at specific layers of the OSI model and serves distinct purposes in network communication. Network Devices and OSI Layers Hub Repeater Bridge Switch Router Gateway Physical Data Link Network ...
Read MoreClassful Vs Classless Addressing
Classful addressing is the original IP addressing scheme introduced in 1981 as part of the Internet Protocol. It divides IP addresses into predefined classes based on the first few bits of the address. This system was later replaced by Classless Inter-Domain Routing (CIDR) in 1993 due to inefficient IP address utilization. An IP address consists of 32 bits divided into four 8-bit sections (octets) separated by dots. Each IP address is further divided into two parts: a Network ID that identifies the network and a Host ID that identifies the specific device within that network. Classful Address Classes ...
Read MoreWhat are guided and unguided transmission media?
Transmission media is the physical path through which data signals travel in a network. It serves as the communication channel that connects different devices and systems. Telecommunication links are classified into two main categories: Guided media (wired) − uses physical cables or wires Unguided media (wireless) − uses electromagnetic waves through air Both types are used for short distance (LANs, MANs) as well as long distance (WANs) communication. Transmission Media Classification Guided Media (Wired) ...
Read MoreWhat is hierarchical routing?
In hierarchical routing, the routers are divided into regions. Each router has complete details about how to route packets to destinations within its own region, but it does not have any idea about the internal structure of other regions. As networks grow larger, the number of routers increases significantly. In traditional routing algorithms like Link State (LS) and Distance Vector (DV), every router needs to maintain information about all other routers. This causes routing tables to become extremely large, reducing efficiency. Hierarchical routing solves this scalability problem by organizing routers into a structured hierarchy. How Hierarchical Routing Works ...
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 MoreDifference between Internet and World Wide Web
Many people use the terms Internet and World Wide Web (WWW) interchangeably, but they are fundamentally different concepts. The Internet is the underlying infrastructure that enables global connectivity, while the WWW is a service that runs on top of this infrastructure. What is the Internet? The Internet is a global network of interconnected computers that communicate using standardized protocols. It serves as the foundation for various services including email, file transfer, remote access, and the World Wide Web. The Internet uses physical infrastructure such as optical fibers, copper wires, and wireless technologies to connect devices. It operates ...
Read MoreDifferentiate between 1-Persistent and p-Persistent CSMA
Carrier Sense Multiple Access (CSMA) protocols are medium access control methods that help stations avoid collisions by listening to the channel before transmitting. The three main types of CSMA protocols are 1-persistent CSMA, non-persistent CSMA, and p-persistent CSMA. This article focuses on differentiating between 1-persistent and p-persistent CSMA protocols, their mechanisms, advantages, and key differences. 1-Persistent CSMA In 1-persistent CSMA, a station continuously monitors the channel to determine whether it is busy or idle before transmitting data. When the channel is busy, the station waits until it becomes idle. Once an idle channel is detected, the ...
Read MoreWhat are the critiques of OSI Model and Protocols?
The OSI Model and TCP/IP protocol suite are fundamental networking frameworks, but both have faced significant critiques from network professionals and researchers. Understanding these limitations helps explain why certain design choices were made and how networking has evolved. TCP/IP Protocol Suite Overview TCP/IP is a suite of communication protocols used to interconnect network devices on the internet. Created by DARPA in the 1970s for UNIX systems, it provides end-to-end communication by defining how data should be packetized, addressed, transmitted, routed, and received. The protocol suite uses a client-server model and emphasizes reliability with automatic recovery from network device ...
Read MoreWhat are the differences between Zigbee and Wi-Fi?
Zigbee and Wi-Fi are both wireless communication technologies, but they serve different purposes and operate with distinct characteristics. Understanding their differences helps in choosing the right technology for specific applications. Wi-Fi Wi-Fi is a wireless networking protocol that allows devices to communicate without cables. It is based on the IEEE 802.11 standard and operates as a wireless local area network (WLAN) protocol. Wi-Fi provides high-speed internet connectivity and data transfer within a fixed location. Common Wi-Fi Applications Schools, homes, and colleges Corporate offices and business establishments Public spaces like airports, railway stations Retail locations and ...
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