TYPES OF COMPUTER NETWORKS: A computer networks is a communication system connecting two or more computers that work together to exchange information & share resources. A network may consist of microcomputers or it may integrate microcomputers or other devices with large computer. Networks can be controlled by all nodes co-ordinarily & supply all resource. These networks differ in geographical size. There are three important types of networks. 1. Local Area Network 2. Metropolitan Area
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Problems in Network Security Problems in Network Security Calvin C. Tippit CM107-59 Problems in Network Security Outline I. Introduction a. Information security vulnerabilities b. More training is needed for employees working in the Network Security field to prevent common mistakes from happening. II. Mobile Insecurities a. Mobile devices being intruded by cybercriminals. b. The importance of Anit-Virus softwares and system updates. III. Privacy and Security Issues
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COMPUTER NETWORKS 4TH MARCH 2012 Examination Paper Answer ALL questions. Clearly cross out surplus answers. Time: 2 hours Any reference material brought into the examination room must be handed to the invigilator before the start of the examination. ANSWER ALL QUESTIONS Marks QUESTION 1 a) State FOUR (4) principles underpinning the Open Systems Interconnection (OSI) Reference Model. b) Describe the purpose of the physical layer of the OSI Reference Model. c) State THREE (3) elements
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COMMUNICATION AND COMPUTER NETWORK 4.1 INTRODUCTION Today computer is available in many offices and homes and therefore there is a need to share data and programs among various computers with the advancement of data communication facilities. The communication between computers has increased and it thus it has extended the power of computer beyond the computer room. Now a user sitting at one place can communicate computers of any remote sites through communication channel. The aim of this chapter
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Build a Computer Network Table of Contents Build a computer Network ……………………………………………………….. 1 What is a computer…….……………………………………………………………. 2 (b) What are the main types of computers used in a Network? … 2 What is a Network…………………………….…………………………………… 3 What hardware and software is found in a computer network……….. 4-9 Conclusion ……………………………………………………………………………. 10 Basic information on students assigned to do this project……………… 11 Build a Computer Network What
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A network topology that is generally in a line formation‚ which uses several devices that are all connected to a common central cable called a bus and commonly used for LAN’s. Component Description Usually 2 or more desktop of notebook computers with a network interface card. A common printer is shared by all desktops or notebook computers. The server process requests and delivers data to the client computers over the internet or network.
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happen at any place and any time when talking about computer security incidents. Not everything goes perfectly fine when a computer system is involved. It could be something as simple as a bad cable or it could be as horrible as a hacker trying to steal all of your information. Either way‚ it probably isn’t going to end well. Additionally‚ the FBI and the Computer Security Institute‚ in their annual survey on computer crime and information security‚ gathered the following disturbing facts in 1998:
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Elements of Network Security Louis Kibby Network / Datacom I TCM 537 Mr. Stuart Sandler November 28‚ 2005 Elements of Network Security Introduction The primary objective of a network security system is to‚ in a cost effective manner‚ balance convenient access to legitimate users and inaccessibility to attackers. In a nutshell‚ the goal is to prevent connectivity to anyone intending to cause harm to the network. The harm to which this paper refers can come in the following forms: 1. Application-level
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Security of Computer Network System Abstract: This paper discussed the secure and dependable problem about the computer network system. On some aspects: the importance of network security‚ basic theory‚ function‚ and the method of solving a problem‚ etc. Good views for solving the problem are put forward. It strengthens people’s consciousness on network security. Key words: Computer network Virtual private network Encryption techniques Firewall Introduction: Along with the computer
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Angela Harris CSCI 1141 Joshua Montgomery February 20‚ 2013 Securing Information in Business In order to protect organizations from data theft‚ the following steps should be followed to secure company networks and information: Discover & Assess Risk –Network and agent-based scanning‚ plus assessment‚ provide the depth and breadth of info needed to make the right decisions. Establish & Enforce Policy –Whitelisting capabilities ensure that only those authorized applications
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