Introduction Data communications (Datacom) is the engineering discipline concerned with communication between the computers. It is defined as a subset of telecommunication involving the transmission of data to and from computers and components of computer systems. More specifically data communication is transmitted via mediums such as wires‚ coaxial cables‚ fiber optics‚ or radiated electromagnetic waves such as broadcast radio‚ infrared light‚ microwaves‚ and satellites. Data Communications = Movement
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used‚ a high voltage on a communications medium can represent a logical 1 and a low voltage of can represent a logical 0. Different methods of encoding exist these are used for different types of communication between electrical devices. Distortion‚ noise‚ and cross talk on a cabling medium are factors that prevent the accuracy of transmitted data to be intact. For these reasons different encoding methods exist. An example is when 2 wires are used to transmit music data to a speaker Digital signals
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ASSIGNMENT NO. 1 Victory Training and Development Institute Kingdom of Bahrain Chartered Institute of Personnel and Development Written Handout (Word Count: 668) Assignment submitted in part fulfillment of the requirement for the (3RAI) Core Unit – (3RAI)- Foundation Level Prepared By | Ahmed Malek | Programme Title | Recording‚ Analyzing‚ and Using HR Information | Assignment Title | 3RAI | CIPD Membership No. | | Personal Tutor | | Submission | 1st Attempt |
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Running head: European Data Protection Directive European Data Protection Directive Piera Hosinski SECURE MANAGEMENT ( MGT 580 Winter 2012) Instructor: Christopher Sobota Abstract “The Data Protection Directive (officially Directive 95/46/EC on the protection of individuals with regard to the processing of personal data and on the free movement of such data) is a European Union directive which regulates the processing of personal data within the European Union. It is an important component
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Why might the figures for recorded crime underestimate the actual amount of crime that takes place? Brief definition of crime and the process from committed crime to prosecution. An overview of recorded crime numbers between the years 1876-2000. Given statistics of the actual amount of recorded and unrecorded crime. Possible reasons and examples for crimes not being recorded based on BCS surveys. To define crime we have to look at it from two different perspectives‚ one is based on the legal
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Databases and Data Communication BIS 320 September 16‚ 2013 Lisa Ricks Databases and Data Communication Databases are great when you want to create a model of data such as numbers for figuring out how much you can spend on a new home when you are in the buying marketing‚ you can use excel to figure out how much you can spend and a monthly payment. You can also use a database to track of shipping components from a trade show that you are in charge of. You can use a database to organize
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its bandwidth. What is attenuation? Define channel capacity. What key factors affect channel capacity? Problems: Figure 1 shows the frequency domain function for a single square pulse. The signal pulse could represent a digital 1 in a communications system. Note that an infinite number of higher frequencies of decreasing magnitudes is needed to represent the single pulse. What implication does that have for a real digital transmission system? Suppose that a digitised TV picture is to be
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knowledge and understanding on confidentiality. There are different types of confidentiality. It is the right of every parents/carer that information about them is respected‚ kept in confidence‚ safely‚ securely and in the accordance with the Data Protection Act 1998. A teaching assistant needs to understand how important it is to respect confidentiality if we went to gain and keep respect of other adults and parents in the settings‚ although it is the most difficult to maintain. There is also legislation
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02. Compare and contrast between the bus and star topology. A network architecture in which a set of clients are connected by a shared communications line‚ called as a bus. A network consists of one central switch‚ hub or computer which acts as a conduit to transmit messages‚ called as a star. Bus networks are the simplest way to connect multiple clients‚ but often have problems when two clients want to transmit at the same time on the same bus. The star topology is a computer
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The Data Protection Act (UK – 1998‚ Malta – 2001): The DPA concerns the “collection‚ recording‚ organization‚ storage‚ adaptation‚ alteration‚ retrieval‚ gathering‚ use‚ disclosure‚ blocking‚ erasure or destruction of personal data”. The purpose of the Data Protection Act: a. The purpose of the DPA is to protect living individuals against the misuse of their personal data. Examples of such misuse could include exposing of personal data without obtaining prior permission from the data subject
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