By Pawan K. Bhardwaj
A+, Network+, and safeguard+ certifications are famous through the because the average for proving foundation-level IT ability units. A+, community+ and protection+ tests in a Nutshell offers precisely what skilled pros have to cross one or all of those CompTIA certification checks. it is an all-in-one overview source that boils down vital suggestions and strategies and provides the knowledge in an accessable structure. furthermore, research notes and perform sections support construct wisdom and get ready readers for the unforeseen. together with insurance of the A+ 2006 tests, this is often the single e-book that would stack the deck on your desire.
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Extra info for A+, Network+, Security+ Exams in a Nutshell
Currently, ATX motherboards are the most popular motherboards. With most of the components integrated onto the motherboard, there is still sufficient scope to add additional components. The expansion slots are located at right angles to the processor and memory, which makes it easier to install full-length adapter cards. Moreover, the processor and memory are located at the back of the card, in line with the power supply, which makes better air flow for cooling them. It supports soft power off support, meaning that the system can be turned off using the operating system instead of using the power switch.
SATA power connector Serial ATA (SATA) devices use a 15-pin power supply connector. 3 volts, +5 volts, and +12 volts. Remember the number of pins, wire colors, and voltages for power supply connectors of standard peripherals such as the floppy drive and the hard disk drive? These connectors have four pins and the red wire carries +5 volts while the yellow wire carries +12 volts of DC supply. The black wires are used for ground connection. The color codes for floppy drives and hard drives or CD/DVD drive connectors are identical.
A floppy disk, or diskette, consists of a circular piece of thin plastic magnetic sheet encased in a plastic case. These disks are read and written in floppy disk drives (FDD). 5 inches. 44 MB. Many new computers do not have a floppy disk drive at all due to high storage capacity and falling prices of CD and DVD disks and drives. 2 MB for a doublesided high-density disk. 88 MB for an extended density disk. Hard disk drives. Hard disk drives are the main storage devices for all personal computers and servers.
A+, Network+, Security+ Exams in a Nutshell by Pawan K. Bhardwaj