Application Components Application components are the essential building blocks of an Android application. These components are loosely coupled by the application manifest file AndroidManifest.xml that describes each component of the…
What is Android? Android is an open source and Linux-based Operating System for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led…
Network Security refers to the measures taken by any enterprise or organisation to secure its computer network and data using both hardware and software systems. This aims at securing the…
Types of IP addresses 1. Private IP addresses All the devices that are linked with your internet network are allocated a private IP address. It holds computers, desktops, laptops, smartphones,…
TCP/IP Reference Model is a four-layered suite of communication protocols. It was developed by the DoD (Department of Defence) in the 1960s. It is named after the two main protocols…
The OSI model is based on a proposal developed by the International Standards Organization (ISO) as a first step toward international standardisation of the protocols used in the various layers…
To reduce their design complexity, most networks are organised as a stack of layers or levels, each one built upon the one below it. The number of layers, the name…
Local area networks, generally called LANs, are privately-owned networks within a single building or campus of up to a few kilometres in size. They are widely used to connect personal…
What is network topology The way in which devices are interconnected to form a network is called network topology. Some of the factors that affect choice of topology for a…
Radio waves are easy to generate, can travel long distances, and can penetrate buildings easily, so they are widely used for communication, both indoors and outdoors. Radio waves also are…