between Storage Area Networks (SANs) and Network Attached Storage (NAS) system? Storage Area Networks (SANs) | Network Attached Storage (NAS) system | A SAN is a dedicated network that provides access to various types of storage devices including type libraries‚ optical juke boxes and disk arrays. | Network Attached storage system are networked appliances which contain one or more hard drives that can be shared with multiple heterogeneous computers. | A SAN is a local network of multiple devices
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Computer Security‚ Ethics and Privacy Ethics and Society * Computer Ethics * Are the moral guidelines that govern the use of computers and information systems. Information Accuracy * Information accuracy today is concern because many users access information maintained by other people or companies‚ such as on the internet. * Do not assume that because the information is on the web that is correct * Users should evaluate the value of the web page before relying on its content
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101: COMPUTER LITERACY QUIZ CHAPTER-2 Name_______________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) ________ is data that has been organized or presented in a meaningful fashion. 1) _______ A) A number B) Information C) A symbol D) A character 2) Which of the following is NOT one of the four major data-processing functions of a computer?
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REAL TIME POWER SYSTEM SECURITY ASSESSMENT USING ARTIFICIAL NEURAL NETWORKS REAL TIME POWER SYSTEM SECURITY ASSESSMENT USING ARTIFICIAL NEURAL NETWORKS Abstract Contingency analysis of a power system is a major activity in power system planning and operation. In general an outage of one transmission line or transformer may lead to over loads in other branches and/or sudden system voltage rise or drop. The traditional approach of security analysis known as exhaustive security analysis involving
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Generations of Computer Computer Age: Past‚ Present‚ and Future The First generation The Second Generation The Third Generation The Fourth Generation The Fifth Generation The Computer Age 1951-1958 The First Generation Vacuum Tube – – Rapid changes Four generations over 50 years Trends across generations – Decrease size – Increase speed Magnetic core memory Storage – – Heat Burnout Machine language Punched cards Tape (1957) Characteristics of 1st Generation Computers Computers
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SYLLABUS Cambridge International AS and A Level Computing 9691 For examination in June and November 2014 University of Cambridge International Examinations retains the copyright on all its publications. Registered Centres are permitted to copy material from this booklet for their own internal use. However‚ we cannot give permission to Centres to photocopy any material that is acknowledged to a third party even for internal use within a Centre. © University of Cambridge International Examinations
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Chapter 3 Mobile Radio Propagation: Large-Scale Path Loss 1. (a) Explain the advantages and disadvantages of the 2-ray ground reflection model in the analysis of path loss. (b) What insight does the 2-ray model provide about large-scale path loss that was disregarded when cellular systems used very large cells? 2 .In a 2-ray ground reflected model‚ assume that must be kept below 6.261 radians for phase cancellation reasons. Assuming a receiver height of 2 m‚ and given a requirement that be less
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“Mobile Computing and Social Networks” Richard Henderson Dr. James Francisco CIS 500 – Information Systems for Decision Making 9/7/2012 Strayer University Mobile Computing and Social Networks Mobile computing and social networks are part of the daily lives of millions of Americans. “48% of American adults own a mobile computing device in some form according to the latest Nielsen data.” (Knott‚ 2012) As far as social networking site usage “over 65% of all internet users in the United
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A COMPUTER VIRUS A case study presented to Dr.Pedro D. Abanador In partial fulfilment of the requirements in the subject RES323- Research Methodologies Leading to the degree Bachelor of Science in Information Technology Presented by: Estimada‚ Ronald B. BSIT-3A2 February 4‚ 2014 CHAPTER I THE PROBLEM AND ITS BACKGROUND Introduction A computer virus is a small software program that spreads from one computer to another
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keyboard-8 bit Computer systems v Manual systems Benefits of computer system: Takes up less space Searching is very quick More than one person can access the same data form their network PC. The data stays in the computers memory Fewer staff are needed to look after a computer system Reports can be generated very quickly-automated Problems of a computer system: Setting up is very expensive Computer systems need people to maintain them POWER CUTS! It is easy to hack into a computer system.
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