Download e-book for kindle: A+ Fast Pass by et al., David Groth, Faithe Wempen

By et al., David Groth, Faithe Wempen

ISBN-10: 0585487537

ISBN-13: 9780585487533

ISBN-10: 0782142591

ISBN-13: 9780782142594

The suitable A+ coaching and evaluation ToolFrom the writer of Sybex's best-selling A+ examine consultant comes the streamlined instrument you want to bone up on serious A+ info: A+ quick go. The enclosed CD helps you to perform, perform, perform so that you can technique the assessments with confidence.Coverage includes:Installing, configuring, and upgrading hardwareDiagnosing and troubleshooting problemsPerforming preventive maintenanceAddressing protection and environmental issuesWorking with motherboards, processors, and memoryWorking with printersUnderstanding actual networking techniquesUnderstanding OS fundamentalsInstalling, configuring, and upgrading working structures and applicationsDiagnosing and troubleshooting software program problemsConfiguring community software program

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This prevents other devices from overwriting the information stored there. Certain system components also need a memory address. Memory addresses are usually expressed in a Chapter 1: Domain 1 Installation, Configuration, and Upgrading 33 34 Chapter 1: Domain 1 Installation, Configuration, and Upgrading hexadecimal range with eight digits, such as 00F0000–000FFFFF. Direct Memory Access Direct memory access (DMA) allows a device to bypass the CPU and place data directly into RAM. To accomplish this, the device must have a DMA channel devoted to its use.

10 Upgrading a PC When you’re planning and executing system upgrades, it is important to know not only how to physically perform the upgrade, but also what effect the upgrade will have and what potential problems may be anticipated. This is a newly added A+ exam objective in the 2003 revision, and it emphasizes critical thinking as it pertains to upgrades. Critical Information Although almost any technical information about components may be useful in planning an upgrade, the A+ exam objectives provide a list of example issues for this objective; the most critical of these are summarized in the following sections.

Let’s look briefly at the three connection methods: Internal Devices Only When you have only internal SCSI devices, you connect the cable to the adapter and to every SCSI device in the computer. You then install the terminating resistors on the adapter and terminate the last drive in the chain. All other devices are unterminated. 23. 24. By external devices, we mean that each has its own power supply. 5 meters) stub cables to run between the devices in a daisy chain (rather than one long cable with several connectors).

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A+ Fast Pass by et al., David Groth, Faithe Wempen


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