...What is a computer virus? Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation. What do computer viruses do? Through the course of using the Internet and your computer, you may have come in to contact with computer viruses. Many computer viruses are stopped before they can start, but there is still an ever growing concern as to what do computer viruses do and the list of common computer virus symptoms. A computer virus might corrupt or delete data on your computer, use your email program to spread itself to other computers, or even erase everything on your hard disk. Computer viruses are often spread by attachments in email messages or instant messaging messages. That is why it is essential that you never open email attachments unless you know who it's from and you are expecting it. Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files. Computer viruses also spread through downloads on the Internet. They can be hidden in illicit software or other files or programs you might download. To help avoid computer viruses it's essential that you keep your computer current with the latest updates and antivirus tools, stay informed about recent threats, run your computer as a standard user (not as administrator), and that you follow a few basic rules when you surf the Internet, download files, and open attachments. Once a virus is on your computer...
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...Computer security (Also known as cybersecurity or IT Security) is information security as applied to computers and networks. The field covers all the processes and mechanisms by which computer-based equipment, information and services are protected from unintended or unauthorized access, change or destruction. Computer security also includes protection from unplanned events and natural disasters. One way to think of computer security is to reflect security as one of the main features Some of the techniques in this approach include: The principle of least privilege, where each part of the system has only the privileges that are needed for its function. That way even if an attacker gains access to that part, they have only limited access to the whole system. Automated theorem proving to prove the correctness of crucial software subsystems. Code reviews and unit testing are approaches to make modules more secure where formal correctness proofs are not possible. Defense in depth, where the design is such that more than one subsystem needs to be violated to compromise the integrity of the system and the information it holds. Default secure settings, and design to "fail secure" rather than "fail insecure" (see fail-safe for the equivalent in safety engineering). Ideally, a secure system should require a deliberate, conscious, knowledgeable and free decision on the part of legitimate authorities in order to make it insecure. Audit trails tracking system activity, so that when...
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...Table of Contents: Question 1A------------------------- Page 3 Question 1B----------------------- Page 5 What is Quality Audit? The principles of Quality Audit, in the sense we mean it here, are based on the style of quality standards used in several formal national and international standards such as the ISO-900x international quality standards. These standards do not in themselves create quality. The logic is as follows. Every organization should define comprehensive procedures by which their products or services can be delivered consistently to the desired level of quality. As was discussed in the section on Quality Management, maximum quality is rarely the desired objective since it can cost too much and take too long. The average product or service provides a sensible compromise between quality and cost. There is also a legitimate market for products that are low cost and low quality. Standards authorities do not seek to make that business judgment and enforce it upon businesses, except where certain minimum standards must be met (eg all cars must have seat belts that meet minimum safety standards, but there is no attempt to define how elegant or comfortable they are). The principle is that each organization should create thorough, controlled procedures for each of its processes. Those procedures should deliver the quality that is sought. The Quality Audit, therefore, only needs to ensure that procedures have been defined, controlled, communicated and used. Processes...
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...available today. However, with this guide I will pick some computer choices that I believe would benefit a lawyer. If you're planning to only use your laptop for work, than paying attention to graphic card specs is unnecessary. Processing power and RAM should be your primary concern. For lawyers, mid-range processing power should be good enough . Any Intel Core i3 or i5s should be more than enough. As for RAM, more is always better. The bare minimum though is 2GB, but 4GB is ideal. Battery life is the main reason why you shouldn't go overboard with your processor. A powerful chip adds considerable heat and it can also drain your battery much faster. For lawyers, a long battery life is important. You never know when you'll need a power outlet. When it comes to choosing laptops for creative work, art or graphic design, digital painting or 3D modeling, there are a few considerations. If you're just creating 2D work, you can save money by not getting a high-end graphics card. What you get with a high end graphics card is to ability to move around a highly detailed or textured 3D model with no lag. Screen size and resolution will affect your productivity. A resolution of 1920 by 1080 pixels should provide ample working space and still be able to show menus, control palettes. Next consideration is screen size. A larger screen will enable you to see details clearer. Computer skills are becoming a fundamental part of education. Teachers...
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...1. What questions should you ask and how should you proceed? The questions I would ask would be who, what, where, when, why and how about everything that happened during the period in question. Since the questions are fluid to the situation, I can’t pin point anything specific but I never ask the client if she did it or not. Just ask the client what she was doing on the time specified. I would then document what she said happened in chronological order and then proceed to the investigation. When proceeding with the investigation, the first step is to make a copy of the evidence. You want to have at least two copies of the original evidence (a hash and an image to work with) in case you need a backup for any reason. After that you want to document any findings as accurately and as detailed as possible. Without detailed documentation, courts may not accept the investigative results as vailed or could be torn apart in an examination. While all this is going on, you want to avoid altering the data in any way as this would basically be destroying evidence. You pull the hash by using the command md5sum /dev/hda1 | nc 192.168.0.2 8888 −w 3 as an example. Find the files in question and examine their creation dates, dates accessed and dates last modified. See if those dates match the client’s story and that is about as far as you need to take it. (Easttom, 2014) 2. What is chain of custody and why must it be followed in investigations? The chain of custody is the chronological...
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...1) What sparked your interest in computer science? How did this lead you to major in computer science and what do you hope to accomplish with your degree? In your answer, please describe how your experiences have influenced the goals you have for yourself. My interest in computer science started when I was a young child. I’ve always been interested in using the computer, and I’ve been fortunate enough to be born at the precipice of the technological age. This has allowed me to grow up alongside technology, getting bigger while technology helped the world get smaller. I am completely comfortable with technology and have an aptitude for figuring my way around any piece of technology. Using the computer feels natural to me; it feels like where I should be centering my hard work, ambition, and focus. When deciding a major for college, I...
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...importance of computer literacy Identify the various types of software Define the term computer and identify its components Describe the categories of computers Explain why a computer is a powerful tool Introduction to Computers Determine how the elements of an information system interact Recognize the purpose of a network Discuss the uses of the Internet and the World Wide Web Identify the various types of computer users Discuss computer applications in society Recognize the difference between installing and running a program 1 2 A World of Computers What Is a Computer? What is computer literacy? How is a computer defined? Electronic device operating under the control of instructions stored in its own memory Knowledge and understanding of computers and their uses The computer Computers are everywhere first, Accepts data such as raw facts, figures, and symbol then, Processes data into information (Data that is organized, meaningful, and useful ) finally, Produces and stores results 3 4 The Components of a Computer What is the information processing cycle? What is an _____ device? input Hardware used to enter data and instructions Input Process Output Storage Communication 5 6 1 The Components of a Computer The Components of a Computer What is an ______ device? output What is the system unit? Hardware that conveys information to a user Box-like case containing electronic components used to process data 7 The Components of a Computer What is the magical...
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...Introduction to Computers A World of Computers What is computer literacy? * Knowledge and understanding of computers and their uses * Computers are everywhere What Is a Computer? How is a computer defined? Electronic device operating under the control of instructions stored in its own memory * Accepts data Raw facts, figures, and symbols * Processes data into information Data that is organized, meaningful, and useful * Produces and stores results Advantages and Disadvantages of Using Computers What are the advantages of using computers? * Speed * Reliability * Consistency * Storage * Communications What are the disadvantages of using computers? * Violation of Privacy * Impact on Labor Force * Health Risks * Impact on Environment What Is a Computer? What is the information processing cycle? * Input * Process * Output * Storage * Communication The Components of a Computer What is an input device? * Hardware used to enter data and instructions What is an output device? * Hardware that conveys information to one or more people What is the system unit? * Box-like case containing electronic components used to process data What are two main components on the motherboard? * Central Processing Unit (CPU) Also called a processor The electronic component that interprets and carries out the basic instructions that operate the computer *...
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...There is no doubt that computer technology has had a great impact on society and also brought many technical developments with it. It has brought many changes to the way we live as individual as well as members of societies and organizations. It has had major effects and changes on the economy, health, education, industry, agriculture and many other fields. The ability of computers in gathering, processing, presenting and sending large amount of information has had major changes in the way large organizations as well individuals organize their lives. Computers are at work, in schools and hospitals and many other places. We therefore need to have some basic understanding of how they function and the language associated with them. For people with not enough technical knowledge on computers, the amount of technical knowledge involved in the field of computer technology is overwhelming. It is also a field that changes fast enough for people to keep pace with. This site has been organized to help you understand, in a simple way, the concepts involved and language used in computer technology. Computers. How do computers work? What to do before buying a personal computer? Mobile Learning. What is mobile learning? What are its advantages? Glossary of Computer Technology and Internet Terms. Computer and information technology and internet terms, in alphabetical order, simply explained.. Computer Hardware. What is computer hardware? Free resources with easy to follow...
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...(introduction) What is a Computer? B. History of computers C. (thesis) Types of computer 4.1 Supercomputer 4.2 Mainframe 4.3 Workstation 4.4 The Personal Computer or PC 4.5 Microcontroller 4.6 Server D. Hardware & software 5.7 hardware 5.8 software 5.9 firmware E. Basic operations 6.10 input 6.11 output 6.12 processing 6.13 storage F. Names for different sizes of data 7.14 Bit 7.15 Byte 7.16 kB 7.17 MB 7.18 GB 7.19 TB 7.20 PB G. Measurement of data speed 8.21 Mbps 8.22 Gbps H. Purpose of computer 9.23 performing calculations 9.24 storing data 9.25 retrieving data 9.26 processing data INTRODUCTION: WHAT COMPUTER IS? I. What is computer? A computer is a "box" that you put some "stuff" in, the box does "stuff" with it, and then the box has some way of showing the world what it's done. The stuff you put into a computer is called data, and gets into the computer using the input. Data is simply a form of information. You can put data into a computer by your keyboard, a mouse, a trackpad, a camera, an infrared sensor; anything that will give the computer more information about the world around it. Based on what information the computer has gotten, it can decide to do stuff with it. What the computer does with information is known as processing. A computer will process...
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... WEEK 10 8/28/13 Explain computer ethics Computers are special technology and they raise some special ethical issues. In this essay I will discuss what makes computers different from other technology and how this difference makes a difference in ethical considerations. In particular, I want to characterize computer ethics and show why this emerging field is both intellectually interesting and enormously important. On my view, computer ethics is the analysis of the nature and social impact of computer technology and the corresponding formulation and justification of policies for the ethical use of such technology. I use the phrase "computer technology" because I take the subject matter of the field broadly to include computers and associated technology. For instance, I include concerns about software as well as hardware and concerns about networks connecting computers as well as computers themselves. A typical problem in computer ethics arises because there is a policy vacuum about how computer technology should be used. Computers provide us with new capabilities and these in turn give us new choices for action. Often, either no policies for conduct in these situations exist or existing policies seem inadequate. A central task of computer ethics is to determine what we should do in such cases, i.e., to formulate policies to guide our actions. Of course, some ethical situations confront us as individuals and some as a society. Computer ethics includes consideration of...
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...Arguments about Computer dependency Since their invention, people far and wide have become increasingly dependent on computers. Computers have found their way into just about every aspect of our lives, and in most cases, they make things easier for us [4] . They allow us to work from home, socialize with our friends and family who live too far away to visit, and they provide an ever-welcome stress relief when we come home from school or work and just want to have some fun. But as we increasingly rely on computers to get through the day, the question begs to be asked: have we become too dependent on computers? Despite the many benefits of computers, there are also a number of arguments against them, one of which is the negative effect some believe they are having on children's education. Illiteracy is a growing issue, and many say that computers are to blame. In the past few years, many teachers have taken to shuffling their students off to a computer to type out short, quick assignments that could easily be written out by hand. While this isn't much of an issue for older students, it is an issue for the younger students who are just learning to read and write. Regardless of how much we're coming to rely on computers, printing and handwriting are a necessary skill to have. But typing out assignments has an effect on more than just the ability to print4. It can also negatively impact their spelling and grammar. While most programs now have spell- and grammar-check, they...
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...No Minds for Computers In this paper I will argue why computers can’t have a mind. In order to prove my argument, I will focus on two reasons. First I’ll argue how computers are created and controlled by humans. Then I will explain why computers don’t have the ability to think on their own. These two arguments will demonstrate why computers aren't able to have a mind. First let me elaborate what I mean by computers being created and controlled by humans. Computers are created to perform one or multiple tasks that make human life easier. Humans initiate very complicated programs in modern computers that allows the machines to fulfill millions of different tasks. The key here is that humans program these computers to complete tasks, giving the hardware only one duty which is given only by the human. So am I saying that programming is what makes a computer? Well lets take a deeper look at programming. Programming is simply providing a computer with coded instructions for the automatic performance of a particular task. Lets take an example of how a program works in a computer. In a paper written by John R. Searle, Minds, Brains, And Programming, John talks about how he pretends to be a program in a computer. In this program he is locked in a room and is given the task of answering questions in Chinese symbols. John has never spoken, written or understood any Chinese before. Outside the room will be Chinese natives asking and receiving Johns answers. John is given a manual...
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...Discovering Computers 2011 Chapter 4 DISCOVERING COMPUTERS 2011 CHAPTER FOUR: THE COMPONENTS OF THE SYSTEM UNIT PROBLEM SOLVING TIP SHEET Use this Tip Sheet as suggested starting points for the Problem Solving exercises. Problem Solving @ Home 1. Malfunctioning Speakers While working on a homework assignment, you decide to listen to one of your favorite music CDs through your computer speakers. The media player program on your computer automatically starts when you insert the CD. Although it looks like the CD is playing, no sound is coming from your speakers. What might be causing this? What is the first step that you will take to correct this problem? The sound might be muted or the volume turned down; adjust accordingly There may be a problem with your computer recognizing the sound card; check the drivers 2. Optical Disc Drive Stuck While using your computer, you attempt to open the optical disc drive to insert an installation disc for a program you wish to install. The drive, however, does not open when you press the eject button. The drive opened a few minutes prior, when you removed a music CD. What steps will you take to open the drive before calling technical support? Restart the computer. If the problem persists after restarting the computer, shut the computer down and insert the end of a paperclip into the small hole in the optical disc drive (if one exists) to open the drive manually. If necessary, check with technical support or your computer’s documentation...
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...Main Frames vs. Personal Computers Joe Livingston POS/355 April 16 2010 Adam Manfred The essay will cover two main topics of main frames are. The second topic is personal computers or PC. The essay will define what a mainframe computer is and what the computers primary functions are. The paper will cover what a personal computer is and what PC are used for. Once both the mainframe computer and personal computer are defined, the paper will discuss the advantages and disadvantages of both systems. According to techtarget.com a mainframe is a computer that can process thousands of lines of code for a large scale environment like a bank. Mainframes were typically very large machines could span entire rooms. Mainframes can be accessed also through local area networks (LAN) or wide area networks (WAN) and have multiple users. According to bookrags.com mainframe uses a central processing unit that performs calculates and issues instructions to other components. Personal computers or PC also do most of the tasks mainframe computers do in different and smaller scales. The personal computer or PC has many uses for individual users. According to britannica.com a personal computer or digital computer is designed for the use of one person at a time. Personal computers use most of the same comp nets as a mainframe computer like a central processing unit CPU, random access memory RAM, Hard drive. The personal computer has input and output devices like keyboard, mouse...
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