Catherine Grace L. Tomas BSIT-4B TRANSMISSION MEDIA The means through which data is transformed from one place to another is called transmission or communication media. There are two categories of transmission media used in computer communications. Infrared Infrared transmission is usually limited to a small area‚ e.g. one room‚ with the transmitter pointed towards the receiver. The hardware is inexpensive and does not require an antenna.
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43 DATA COMMUNICATION AND NETWORKING 1. Introduction Data Communication is a system consisting of carries and related devices used to transport datafrom one point to another. Communication means to convey a message‚ an idea‚ a picture or speechthat is received and understood clearly and correctly by the person for whom it is conveyed. Ancient Methods of Communication and Their Demerits – Message were sent in olden timeseither through horse riders or by using pigeons. There was no surety that
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Title: Holographic Data Storage Author: Mazin Ismail Abstract: The growing demands of high definition digital video content‚ fixed content data‚ and compliance and security application will soon outstrip the capabilities of current storage technologies to keep up the demand. Clearly a new storage paradigm is needed to meet the growing storage demands. So what is it going to be? With its omnipresent computer‚ all connected via the internet‚ the information age has led to an explosion of
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them to the customers. Webster’s customers mail their payments back to Webster‚ where a clerk in AR batches the checks and sends them to the cashier. The AR clerk then uses the payment stub to enter the payments into the computer‚ where the AR master data is updated to record the payment. Table of Entities and Activities for Webster‚ Inc. Order Entry Process Entitles | Para | Activities | IT Divisions | 11 | 1. Prints monthly statements 2. Sends to AR department | AR Clerk | 1 | 3.
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current data to visualize the trend of future. While data is considered authenticated‚ correct data is required for the management to take any further steps. Hence‚ technical personnel will be very concerned about data extraction. Every possibility of erroneous data must be captured. So‚ what we get is that data need to be transformed into valuable information which is possible only when BI team is highly optimized with their tasks. Understanding each and every single details related to data is
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Metallic Cable Transmission Media Introduction Transmission media -It is included in the lowest layer of the OSI protocol hierarchy – the physical layer. -Transmission medium is simply the path between a transmitter and a receiver in a communications system. Guided Transmission media -some form of conductor that provide conduit in which signals are contained -the conductor directs the signal examples: copper wire‚ optical fiber Unguided Transmission media -wireless systems – without
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Battle between Hadoop and Data Warehouse #1 - Introduction Once or twice every decade‚ the IT marketplace experiences a major innovation that shakes the entire IT industry. In recent years‚ Apache Hadoop has done the same thing by infusing data centres with new infrastructure By giving the power of parallel processing to the programmer Hadoop is on such an exponential rise in adoption and its ecosystem is expanding in both depth and breadth‚ it is natural to ask whether Hadoop’s is going to replace
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high-speed network transmission path. Red Tacton uses the minute electric field generated by human body as medium for transmitting the data. The chips that will be embedded in various devices contain transmitter and receiver built to send and accept data in digital format. In this paper we will discuss about red tacton‚ and it’s working states‚ and applications of red tacton in various fields. And we will compare our red tacton with the other technology for data transmission. CONTENTS
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Abstract: The existing business paradigm of data analytics is set for a transformation. Today‚ companies are experimenting to replicate the “Outsourced data analytics” model to “Crowdsourced data analytics”. Companies like Kaggle‚ Crowdanalytix and others are hitting the headlines of top analytics blogs across the globe. The reason is that the new business model promises a drastic decrease in the cost of analytics for companies long with the flexibility to get the problem solved anytime with much
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Transmission media lie below the physical layer. We can evaluate transmission media by throughput‚ propagation speed‚ and propagation time. * A guided medium provides a physical conduit from one device to another. Twisted-pair cable‚ coaxial cable‚ and optical fiber are the most popular types of guided media. Twisted-pair cable consists of two insulated copper wires twisted together. Twisting allows each wire to have approximately the same noise environment. Twisted-pair cable is used in
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