Data transmission‚ digital transmission‚ or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires‚ optical fibres‚ wireless communication channels‚ and storage media. The data are represented as an electromagnetic signal‚ such as an electrical voltage‚ radiowave‚ microwave‚ or infrared signal. Data representation can be divided into two categories: Digital
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Distinguish between primary data and secondary data? Primary data is the data that is collected first hand from the original source for the purpose of making statistical inference while secondary data is the data that is collected by the method of abstraction and is used to make statistical inference by using primary data already collected by an investigator. Primary data is collected by Identifying population of interest choosing sample analyse sample information draw inference from
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PSTN Definition: PSTN stands for Public Switch Telephone Network‚ which is defined as the Global collection of interconnects. It was originally designed to support circuit-switched voice communication. The PSTN provides the traditional Plain Old Telephone Service (POTS) to residences and many other establishments. PSTN‚ which used to be only a network of fixed-line analog telephone systems‚ is now almost completely digital. Most of its subscribers are still linked by analog circuits. Fixed-line
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Data transmission methods Transmission Transmission is the act of transporting information from one location to another via a signal. The signal may be analog or digital‚ and may travel in different media. Transmission: Communication of data by propagation and processing of signals. Signal processing is the representation‚ transformation and manipulation of signals plus the information they contain. Signal Types Signals: An electric or electromagnetic representations of data by which data is
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EE/CS M171L Fall 2010 Raw Data Sheet Lab 3: Data Transmission over 802.11b Wireless LAN Date 2014/02/20 2. Observation: The main goals for the experiment 3 are first‚ to get basic knowledge of various factors affecting data throughput in a wireless channel‚ second‚ to analyze effect of sporadic losses on TCP throughput and finally‚ to familiarize with basic performance measurement tools in computer networks. In order for us to accomplish these goals‚ we conduct
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Digital Transmission of Digital Data Digital Transmission of Digital Data Digital Data -- can be represented electronically(by sequences of specified voltage levels) or optically Digital Transmission -- sending of information over a physical communications media in the form of digital signals. Page 2 Digital Transmission of Digital Data Computers produce binary data Standards needed to ensure both sender and receiver understands this data Codes: digital combinations
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from my host and “iperf3 -c <remote_host_running_server> -u -l <size> -n <size>” is used to send UDP datagram with given payload size to remote host while the remote host uses “iperf3 -s” to exexute an iperf3 server. 1472 bytes is the maximum value of data for a UDP datagram which is sent without fragmentation. This is observed from the tcpdump output for a fragment of 1473 bytes. We see that two fragments are being made. The first fragment is of 1480 bytes with an offset of 0 bytes and the second fragment
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Distinguish between operant conditioning‚ observational learning‚ and social learning. How are these different kinds of learning utilized in the work place? Give specific examples for each one. Operant conditioning is a theory that is useful when applied to the workplace in several ways. It addresses how employees interact with one another and with clients to how financially successful a company is annually. Operant learning is positive reinforcement. Another example of operant conditioning would
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1.Distinguish between pidgins and creoles. Pidgin language is a simplified language that develops as a means of communication between two or more groups that do not have a language in common. It is most commonly used in situations such as trade‚ or where both groups speak languages different from the language of the country in which they live in (but where there is no common language between the groups). In addition‚ pidgins have a distinct set of characteristics that make them differ from the
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Distinguish between Facts and Inferences My wife does it all the time. She will make an assumption based on an inference. Last week‚ we were going to my brother’s house for our annual Christmas party‚ we do that in the month of January‚ and a car happened to pass us in a quick hurry‚ she said to the person driving‚ “do not get mad at me‚ I did not set the speed limit at 55 miles per hour.” I then‚ asked her‚ “how do you know that person is mad at you‚” because she said‚ “he revved
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