Xem 1-20 trên 868 kết quả A+ Certification
  • This study guide consists of a selection of questions and answers similar to the ones you will find on the official A+ Certification exams. All you need to do is study and memorize the following questions and answers...and you will be ready to take the exams. Remember, we guarantee it!

    pdf48p trannhu 07-08-2009 164 31   Download

  • Tham khảo tài liệu 'troy technologies usa_ a+ certification study guide', công nghệ thông tin, chứng chỉ quốc tế phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • This study guide consists of a selection of questions and answers similar to the ones you will find on the official A+ Core Certification exam. All you need to do is study and memorize the following questions and answers and you will be ready to take the exam. Remember, we guarantee it!

    pdf52p trannhu 08-08-2009 105 16   Download

  • A+ certification is open to anyone who registers for the exams, pays the exam fees, and passes the exams. You don't have to be a PC repair technician, work for a particular company, or have any prerequisite training to qualify for certification; you simply need to pass the exams.

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  • Chapter 1, "Introduction to Computers," sets the background for the rest of the lessons. It provides a historic view of computers from their humble beginnings to today's high-speed marvels. This section also explores the role of today's computer technician.

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  • Chapter 3 - An overview of the personal computer. In this chapter, we expand on the material in the preceding chapters with an explanation of the Input/Process/Output (I/P/O) model and see how it can be used to help us understand the functional design of the personal computer (PC). We go on to define the hardware components that a computer professional can expect to encounter every day—the computer parts that you actually touch.

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  • Chapter 4 - The central processing unit. This chapter presents an overview of the CPU (central processing unit), which functions as the "brain" of the personal computer. Like the human brain, a CPU is a complicated, highly integrated component performing many simultaneous functions. Understanding the principles that underlie the workings of the microprocessor is critical to understanding the computer and its operation.

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  • Chapter 5, "Power supplies", covers power supplies, including how they work and how to troubleshoot problems. The power supply is an often-underrated part of a computer. Many transient problems can be related to a faulty power supply or to poor electrical supply from the local provider. Electronic components require a steady electrical current, free of surges or drops. The power supply is responsible for providing clean, constant current.

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  • Chapter 7 - Memory. In earlier chapters, we learned that the CPU (central processing unit) and motherboard (bus and controllers) are critical components that help determine the overall speed with which a computer can process data. This chapter looks at another important system component and performance factor: memory.

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  • Chapter 13, "Portable computers," explores the features of portable (laptop and notebook) computers. Portable computers, once a novelty, are now a part of everyday business life. Portable computers work and act just like larger systems, except they are very compact. In this chapter, we look at those elements that make a portable computer unique.

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  • Chapter 14, "Connectivity and networking," discusses the basics of how a computer network functions and technology that links a PC to the network. The main contents of this chapter include all of the following: Networking requirements, network types and topologies, network cabling, local area network (LAN) communication, maintaining and troubleshooting networks.

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  • Chapter 17, "Introducing and installing microsoft windows," discusses the development of this now dominant operating system from Microsoft. It presents the differences between the different versions and gives you a foundation for the advanced skills presented in the following chapters. Both Windows 9x and Windows 2000 installations are covered.

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  • Chapter 18, "Running microsoft windows," covers the various tools provided by the Windows 9x and Windows 2000 Professional operating systems that a computer technician uses to manage and maintain both the operating system and the hardware components of the computer.

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  • Chapter 19, "Maintaining the modern computer," focuses on the tools and techniques used to keep a computer operating properly, the use of system software, and how to safeguard critical system files and user data.

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  • Chapter 20, "Upgrading a computer," covers the basic tools and techniques used to perform common upgrades to a computer, including upgrading memory, expansion card operations, and computer disassembly and reassembly.

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  • Chapter 21, "Troubleshooting techniques and client relations," covers the techniques and procedures used to resolve problems related to both hardware and software. It also discusses how to recover from a complete hard drive failure and corruption of core system files and how to deal with clients.

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  • Chapter 22, "The basics of electrical energy," covers electricity and how it relates to the computer. A computer technician does not need to be an electrical engineer, but does need to be able to perform basic tests and to work safely. This chapter provides the reader with background in these issues.

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  • Tham khảo sách 'a+ certification study guide', công nghệ thông tin, chứng chỉ quốc tế phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Ministry to check the certification test exam preparation for International gia.De contestants better understand the fundamental knowledge examination certificate A, B, C. This is a collection of test documentation in English, invite you to consult

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  • You have purchased one of the Troy Technologies USA Study Guides. This study guide consists of a selection of questions and answers similar to the ones you will find on the official A+ Certification exams. All you need to do is study and memorize the following questions and answers...and you will be ready to take the exams. Remember, we guarantee it! Average study time is 10 to 15 hours. Then you are ready.

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