radiation modulated to impress digital data or an analog signal on the light beam. • A photosensitive detector to convert the optical signal back into an electrical signal at the receiver. • Optical connectors at the light source-to-cable interface and at the cable-to-photo detector interface. 2. List Five advantages of an optical communications link • Extremely wide system bandwidth when compared with other sources. • Lower costs due to the fact that optical fiber costs continue to decline
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UNIVERSITY OF OSLO Department of Informatics in collaboration with OSLO UNIVERSITY COLLEGE Department of Computer Science MASTER THESIS ADMINISTRATION OF REMOTE COMPUTER NETWORKS Stig Jarle Fjeldbo May 23‚ 2005 Abstract Today’s computer networks have gone from typically being a small local area network‚ to wide area networks‚ where users and servers are interconnected with each other from all over the world. This development has gradually expanded as bandwidth has become
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made of high-quality silica glass‚ but they can both be made of plastic as well. Connecting two optical fibers is done by fusion splicing or mechanical splicing and requires special skills and interconnection technology. Diagram of a fiber optic cable Fiber optics would not be possible without total internal reflection. When light hits a medium of lesser index of refraction‚ the ray is bent away from the normal‚ so the exit angle is greater than the incident angle. The exit angle will then approach
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Network is the mediator between client computer and server. It connects client computers to the server and allows the sharing of information stored in server computers. A local business (EROS) hair me to design Network for the third and fifth floors‚ so that After carefully considering the requirements I and my team have prepared the following network design for third and fifth floors. The network design is given above. The goal of the designed is to the provide the best performance‚ avilability
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1. A 1.4M Hz carrier is modulated by a music signal that has a frequency components from 20 Hz to 10k Hz. Determine the range of frequencies generated for the upper and lower sidebands. Solution: Upper Side Band = 1‚ 400‚ 000 Hz + 20 Hz = 1‚400‚ 020 Hz Up to = 1‚ 400‚ 000 Hz + 10‚ 000 Hz = 1‚ 410‚ 000 Hz Lower Side Band = 1‚ 400‚ 000 Hz – 10‚ 000 Hz = 1‚ 390‚ 000 Hz Up to = 1‚ 400‚ 000 Hz – 20 Hz = 1‚ 399‚ 980 Hz 2. Determine
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Page 1 The Ten Rules of Industrial Ethernet I. Thou shalt place high priority on security‚ for hackers lurketh‚ thieves stealeth and employees bungleth A Wi-Fi-enabled computer can connect to multiple networks at the same time. Your employees can give a hacker a pathway into your internal network simply by powering up a laptop. Imagine the mess an eco-terrorist could make if he didn’t like the look of your smokestack. Even your well-intentioned employees can bring a network down‚ simply by
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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 Area Network (LAN) – Metropolitan Area Network (MAN) – Wide
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3/25/2014 Course Objectives Covered by this Unit • Contrast telecommunications services. Unit 2 Key Concept 1: Telecommunication Services System terminals Photo courtesy of Corning Cable Systems Copyright 2012‚ ITT ESI 1 Copyright 2012‚ ITT ESI Unit Learning Outcomes Keywords • Describe cable TV systems. Use the following keywords or keyword phrases to search for additional materials to support your work: • Compare various service provider types. • Broadcast TV • Identify different telecommunication
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networking methods of the Internet Protocol Suite over a packet-switched network infrastructure‚ e.g.‚ the Internet and broadband Internet access networks‚ instead of being delivered through traditional radio frequency broadcast‚ satellite signal‚ and cable television (CATV) formats. IPTV services may be classified into three main groups: live television‚ time-shifted programming‚ and video on demand(VOD). It is distinguished from general Internet-based or web-based multimedia services by its on-going
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TOPIC 1 INTRODUCTION TO INFORMATION SYSTEM 1.0 THE BASIC CONCEPT OF DATA AND INFORMATION In an organization‚ ‘Information’ is one of the most valuable and important resources. With the right information‚ from the right source‚ at the right time and place‚ the organization can make the best decision to achieve their goals. Information can be defined in so many ways. The term ‘information’ however is often confused with the term ‘data’. In some cases the term ‘information’ and ‘data’ has been used
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