Network is accessible from many points, it can be susceptible to computer viruses. Notes on Computer Networks Bob Dickerson January 2005 Preface These notes formed the main material for a one semester Computer Science course on networks.At a higher level are encryption techniques. At the lowest level are user identication codes and password. Protection can be accomplished at a number of levels.Network security issues include protecting data from unauthorised access and viruses.“Catastrophe” – Network must be protected from catastrophic events such as fire, earthquake, or theft. In addition to accuracy of delivery, Network reliability is measured by frequency of failure, the time it takes a link to recover from a failure, and the network’s robustness in a catastrophe.It is an open-source event-driven simulator designed specifically for research in computer communication. The performance of a network depends on a number of factors, including: NS2 stands for network simulator version 2.Response time is the elapsed time between an inquiry and a response.Transit time is the amount of time required for a message to travel from one device to another.Performance can be measured in many ways, including transit time and response time.The most important are Performance, Reliability and Security. The encoding standard that is saved with a text file provides the information that your computer needs to display the text on the screen. Because it helps to improve network functionality. Networking- networking is the communication between the interconnected devices.Ī network must be able to meet certain number of criteria.Network- a network is an interconnection of devices.An Introduction to Computer Science, IX, ENGLISH, Computer Science (E). Networks follow protocols, which define how communications are sent and received. 106, LammetAmunjin-2, X, KARBI, KARBI MIL, MIL.Instead of a single large machine being responsible for all aspects of a process, each separate computer (usually a personal computer or workstation) handles a subset. Hindi Sem-1-2 AY-2023-24 (NEP-2020) Updated Syllabus Of B.P.A Sem-1-2.Networks use “distributed processing”, in which a task is divided among multiple computers. Leverage Googles most advanced deep learning neural network algorithms for automatic speech recognition (ASR).The links connecting the devices are often called communication channels. A “ node” can be a Computer, Printer, or any other device capable of sending and / or receiving data generated by other nodes on the network. Diagram of Computer Network Networks :Ī “ network” is a set of devices connected by a media links. Network is a huge concept, it must meet a number of criteria. When you heard/read about network, what you think ? Yes, in simple words we can say that a group of companies, group of computers, group of people,etc. In this section, we are going to see about what is a Network? Its basic concepts, & it’s criteria.
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