Read e-book online A+ Complete Study Guide, Third Edition (220-301 and 220-302) PDF

By David Groth

ISBN-10: 0782142435

ISBN-13: 9780782142433

This is the ebook you must organize for CompTIA's A+ examination. the main up to date content material had to go the A+ center examination and the most recent assurance of reminiscence, bus, peripherals, and instant applied sciences for the working structures examination. This learn consultant offers: * complete assurance of each examination goal * sensible details on community undefined * countless numbers of hard perform questions, within the e-book and at the CD * modern examination guidance software program, together with a checking out engine and digital flashcards Authoritative insurance of all examination ambitions, together with: middle undefined * deploy, configuration, and upgrading * Diagnosing and troubleshooting * Preventive upkeep * Motherboards, processors, and reminiscence * Printers * easy networking working approach applied sciences * OS basics * install, configuration, and upgrading * Diagnosing and troubleshooting * Networks

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When you shut off a computer, anything that is left in main memory is lost forever. , 1151 Marina Village Parkway, Alameda, CA 94501. com The Processor/CPU 31 called the CMOS battery to power the CMOS memory. The batteries come in different shapes and sizes, but they all perform the same function. CMOS batteries come in different styles and sizes, but most look like either large watch batteries or small, cylindrical batteries. Jumpers and DIP Switches The last components of the motherboard we will discuss in this section are jumpers and DIP switches.

Disk Cleanup is used to delete unneeded files. Disk Defragmenter is used to arrange data so that it is more easily accessed. See Chapter 12 for more information. 4. A. Although 8MB is the bare minimum to load the operating system, Microsoft recommends at least 16–32MB of memory. See Chapter 14 for more information. 5. B. The FDISK utility is used to manage disk partitions. With FDISK you can create, delete, and mark the active partition. See Chapter 14 for more information. 6. D. EXE file is used to provide CD-ROM drive support prior to Windows 98 being loaded.

8). A power supply converts 110 volt or 220 volt AC current into the DC voltages that a computer needs to operate. 3 volts DC, +5 volts DC, –5 volts DC (ground), +12 volts DC, –12 volts DC (ground), and +5 volts DC standby. 3 volts DC and +5 volts DC standby voltages are used only by ATX motherboards, not AT motherboards. You may frequently see volts DC abbreviated as VDC. , 1151 Marina Village Parkway, Alameda, CA 94501. com The Power Supply 13 Power supplies contain transformers and capacitors that carry lethal amounts of current.

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A+ Complete Study Guide, Third Edition (220-301 and 220-302) by David Groth

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