PPT-CS1102 Lec08 - Computer Network

Computer Science Department City University of Hong Kong 2 Objectives Illustrate advantages of using a computer network Discuss the purpose of the components required for successful communications. Computer imagery has applications for film special effects simulation and training games medical imagery flying logos etc Computer graphics relies on an internal model of the scene that is a mathematical representati on suitable for graphical comput Semester B, 2012-13. Computer Science Department. City University of Hong Kong. Objectives. Differentiate between machine and assembly languages. Differentiate between markup languages and general-purpose programming languages. SATISH MISHRA,PGT CS ,KV TRIMULGHERRY. A network is any collection of independent computers that communicate with one another over a shared network medium. A computer network is a collection of two or more connected computers. . Not. a buzzword. Too many successful applications. Network motifs in biology. “Communities” and . clusterings. of various kinds. Social network phenomena. …. Does not mean it is not invoked as a buzzword. H. ub. A hub is a devise that connects multiple computers together in a network to make a local areas network(LAN). This allows them to share data packets.. You can also ‘daisy chain’ hubs to allow even more computers to join the network.. . Zhuravlev. Alexander 326 MSLU. COMPUTER-RELATED CRIME. Computer crimes refer to the use of information technology for illegal purposes or for unauthorized access of a computer system where the intent is to damage, delete or alter the data present in the computer. Even identity thefts, misusing devices or electronic frauds are considered to be computer crimes.. A computer network, often simply referred to as a network, is a collection of . computers. . and . devices interconnected by communications channels that facilitate communications and allows sharing of resources and information among interconnected devices.. Lesson 20. Computer Crime. The corporate world is beginning to understand that computers are just another medium for crime.. According to the 1999 CSI/FBI survey. average bank robbery yields $2,500. average computer crime nets $500,000. Computer software (software) are the set of digital instructions that control the actions of a computer. . The preparation of such instructions is called programming/coding, and is done by programmers.. Chapter objectives. . Types of computers. Supercomputers. Mainframes . Minicomputers. Networks. Personal computers. Personal digital assistant. The Internet. Intranets . Extranets. Humans or computers. City University of Hong Kong. Objectives. Describe two fundamental types of software and their relationship. Describe the role and main functions of the operating system in a computer . Describe the term user interface. The characteristics of a network depend upon the type of topology selected for designing that network. There are five basic network topologies. :-. 1) Star Topology. 2) Ring Topology. 3) Bus Topology. TIRUPATI M. GOSKULA. ETC DEPARTMENT. ANJUMAN COLLEGE OF ENGINEERING AND TECHNOLOGY. 1. Computer Communication Network. Text Books: . 1. Behrouz A. . Forouzan. , “Data . Communications and Networking. Computer Lab Rules. Report to class on time. If you are not in class when the bell rings. , report . to counselor for pass/detention. Computer Lab Rules. Stay in assigned seats. You are accountable for the computer which is assigned to you.