COMMUNICATION NETWORK Communication network are large system distributed in wide area which are designed to send and receive information from one computer to another computer and this computers are called host. Network achieves this providing a set of rules which in terms of networking are called protocols. This protocols are set for communication which every host should follow and participate. The network is made up of two types of components: Nodes and
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TYPES OF COMPUTER NETWORKS Maninder Kaur professormaninder@gmail.com What is Network? • A network consists of two or more computers that are linked in order to share resources (such as printers and CDs)‚ exchange files‚ or allow electronic communications. • The computers on a network may be linked through cables‚ telephone lines‚ radio waves‚ satellites‚ or infrared light beams. Different Types of Networks • Depending upon the geographical area covered by a network‚ it is classified as: – Local
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1. Introduction With the rapid development of new communications technology and network technology‚ some industries such as information industry show significant network externality characteristics. Network externality has been defined as "a change in the benefit‚ or surplus‚ that an agent derives from a good when the number of other agent consuming the same kind of good changes" (Liebowitz & Margolis‚ 1996). In other words‚ the product will be more valuable if more people use it. For example
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ABSTRACT : This paper describes the basic threats to the network security and the basic issues of interest for designing a secure network. it describes the important aspects of network security. A secure network is one which is free of unauthorized entries and hackers INTRODUCTION Over the past few years‚ Internet-enabled business‚ or e-business‚ has drastically improved efficiency and revenue growth. E-business applications such as e-commerce‚ supply-chain management‚ and remote
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Models Network Management: Principles and Practice © Mani Subramanian 2000 1 Chapter 4 Case Histories • AT&T Network Management Centers • Network Operations Center • Network Control Centers • Monitors the network status • Self-healing • CNN World Headquarters • Performance Management • Fault Management • Monitoring alarms • Determines causes of failures (Artificial Intelligence) • Centralized troubleshooting of NIC (remotely) • Performance degradation due to NMS • Network may come down
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that connects a group of computers (’nodes’ in network terminology) to a token ring local area network. Networking Devices ... Bridges - used to join two network segments together‚ it allows computers on either segment to access resources on the other - can also be used to divide large networks into smaller segments Networking Devices ... Routers - networking devices used to extend or segment networks by forwarding packets from one logical network to another - most often used in large internetworks
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common network threats and provide solution to protect users from threats‚ hackers and ensures that the data travelling across the networks is safe. Introduction: Computer and network security is a new and fast moving Technology and as such‚ is still being defined and most probably will always be “still defined”. Security incidents are rising at an alarming rate every year [Figure - 1]. As the complexity of the threats increases‚ so do the security measures required to protect networks. Data center
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CONSTRUCTION MANAGEMENT 4 MANAGE THE PLANNING OF WORK METHODS‚ RESOURCES & SYSTEMS TO MEET CONTRACT REQUIREMENTS MANAGE THE PLANNING OF WORK METHODS‚ RESOURCES & SYSTEMS TO MEET CONTRACT REQUIREMENTS Objective1 Manage the evaluation & selection of construction methods Objective 2 Manage the planning of work activities & resources to meet contract requirements Objective 3 Manage the selection & formation of contract team Objective 4 Manage the operations of organisation & communication system
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CHAPTER 15 Wide-Area Wireless Networks (WANs) — GSM Evolution 15.1 Introduction Third-generation (3G) wireless systems [2‚3‚9] offer access to services anywhere from a single terminal; the old boundaries between telephony‚ information‚ and entertainment services are disappearing. Mobility is built into many of the services currently considered as fixed‚ especially in such areas as high speed access to the Internet‚ entertainment‚ information‚ and electronic commerce (e-commerce) services. The
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ω t [R1 + R2] = K + [I0/C[-ω - 1/C2R12]] K = I0sin ω t [R1 + R2] - [I0/C[-ω - 1/C2R12]] V(t) = [I0sin ω t [R1 + R2] - [I0/C[-ω - 1/C2R12]]]e-(1/CR1)t + [-[I0/C[-ω 1/C2R12]]/ω CR1]sin ω t + [I0/C[-ω - 1/C2R12]]cos ω t Q#6.29: Consider a series RLC network which is excited by a voltage source. 1. Determine the characteristic equation. 2. Locus of the roots of the equation. 3. Plot the roots of the equation. Solution: R V(t) i(t) L C For t ≥ 0 According to KVL di 1 L + ∫ idt + Ri = V(t) dt C
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