point called a "hub" that may be a hub‚ switch or router. Devices usually connect to the hub with Unshielded Twisted Pair Strengths Easy to Install‚ Flexible IF single device or cable failure will not bring down the network Weakness If the centralize device fails the entire system is affected Bus Bus is the simplest network topology. All computers are connected to a single cable that makes a connecting Ethernet. Computers decide when network is not busy and communicates data as needed.
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that can be referred to when moving to our new building. Moving into our new building we need to follow certain cable codes and specification. A properly designed network is based around components or wiring units. The components should also follow certain performance specifications so that when installing we will know exactly what types of applications will be supported. The cable specifications and building codes requirements that we use will be based on * ANSI/EIA/TIA standards 568-C-- Commercial
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ratio of power output to power input? Answer: Decibels is a unit of measurement that describes logarithmic ratio 2. What type of tool would be best for add connectors to twisted-pair cable Answer: Crimpers 3. If the tip wire in your pair is white/blue‚ what color would you expect the ring to be Answer: Blue 4. How many pairs of wires are in a binder group? Answer: 25 5. What is added to fiber-optic cabling to provide additional support? Answer: Nylon and Aluminum Coatings 6. What layer of
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more chances that you have for signal loss and lack of signal strength. Exercise 7.1.3 Media Infrastructure SummaryUTP Phone Lines Used in telephone cables and computer networkingCoaxial Television Cable Include feedlines connecting radio transmitters and receivers with their antennas‚ computer network (Internet) connections‚ and distributing cable television signals.Fiber-optic Can be used in optical illumination; computer networkingUses a customized infrastructure to run dedicated connections;
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Information Delivery/Transport and E-Commerce Application Transport provides are principally telecommunications‚ cable and wireless industries; computer network including commercial networks such as CompuServe or America Online and public networks such as the Internet. The transport system does not function as a monolithic system‚ in the sense that there is no single Interstate 80 that connects the digital equivalent of New York’s George Washington Bridge to San Francisco’s Bay Bridge.
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❖ Optical Fiber Bandwidth ❖ Fiber Optic Cable Construction ❖ Other Types of Fibers ❖ Optical Receivers Introduction Our current "age of technology" is the result of many brilliant inventions and discoveries‚ but it is our ability to transmit information‚ and the media we use to do it‚ that is perhaps most responsible for its evolution . Progressing from the copper wire of a century ago to today’s fiber optic cable‚ our increasing ability to transmit more information
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oldest topology. All stations are attached via cable taps or connections to a single length of cable—a wire with two open ends that are terminated by a resistor. The single cable is referred to as a trunk‚ backbone‚ or segment (Goleniewski‚ 2007). There are many different departments in the hospital: Administration‚ Radiology‚ RIS data center‚ and OR/ICU. The network structure for the entire hospital is 1000 BaseT with all station connect using twisted pair concept. Individual sections of departmental
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Vibration Sensors Introduction / Selection Characteristic Flat Frequency Response 20–1‚500 Hz 2–5‚000 Hz Phase Fidelity 2–5‚000Hz Reduced Noise at Higher Frequencies Linearity Mounting in Any Orientation Temperature Limitation EMI* Resistance Mechanical Durability Coil and Magnet Velocity Sensor Piezoelectric Velocity Sensor Yes No Yes Yes Acceptable Excellent No Good Sensor Dependent > +707°F (+375°C) Acceptable Good Yes Good Yes +248°F (+120°C)
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through a physical medium‚ which can be optical fibers‚ copper wire or wireless etc. The following are the main functions of the physical layer: 1. Hardware Specification: The details of the physical cables‚ network interface cards‚ wireless radios‚ etc are a part of this layer. Coaxial Cable Hybrid Cable Wireless Card Network Card 2. Encoding and Signalling: How are the bits encoded in the medium is also decided by this layer. For example‚ on the copper wire medium‚ we can use different
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CHAPTER ONE 1.0 INTRODUCTION 1.1 BACKGROUND SIWES was established by ITF in 1973 to solve the problem of lack of adequate practical skills preparatory for employment in industries by Nigerian graduates of tertiary institutions. The Scheme exposes students to industry based skills necessary for a smooth transition from the classroom to the world of work. It affords students of tertiary institutions the opportunity of being familiarized and exposed to the needed experience in handling machinery
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