Get All-in-one A+ certification exam guide PDF

By Michael Meyers

ISBN-10: 0072126795

ISBN-13: 9780072126792

Mike Meyers has performed it back. the number 1, best-selling examine advisor for CompTIA's A+ Certification assessments has been thoroughly revised and up-to-date for the hot 2001 checks. Written via the industry's top authority on A+ Certification, this must-have reference bargains whole assurance of all fabric on either the middle and working procedure applied sciences assessments. Plus, the bonus CD-ROM includes 6 perform assessments, enormous quantities of questions, and LearnKey(tm) movies. This accomplished consultant not just is helping you cross the A+ certification checks, but in addition teaches you ways to be a professional technician.

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First, you can use RAM that is faster than what the motherboard specifies. For example, if the system needs 100-MHz SDRAM, you can put in 133-MHz SDRAM and it will work fine. Faster DRAM is not going to make the systems run any faster, however, so don't look for any system improvement. Second, you can usually get away with putting one speed of DRAM in one bank and another speed in another bank, as long as all the speeds are as fast or faster than the speed specified by the motherboard. Don't bother trying to put different-speed DRAMs in the same bank.

Figure 53: Improperly inserted SIMM Installing DIMMs and RIMMs DIMMs and RIMMs are far easier to install than SIMMs. First, swing the side tabs on the RAM slots down from the upright position. Then a good hard push down is usually all you need to ensure a solid connection. Make sure that the DIMM snaps into position to show it is completely seated. You will also notice that the two side tabs will move in to reflect a tight connection (Figure 03-54). Figure 54: Inserting a DIMM Installing SO-DIMMs in Laptops It wasn't that long ago that adding RAM to a laptop was either impossible or required you to send the system back to the manufacturer.

30-Pin SIMMs SIMMs (single in-line memory modules) were the next rung on DRAM's evolutionary ladder. Physically, they looked very similar to SIPPs, with one exception: no pins. There was nothing to bend and no way to inflict serious bodily harm to you or the chips (Figure 03-28). Figure 28: 30-pin SIMM SIMMs were inserted into a special SIMM socket. It was virtually impossible to install SIMMs improperly due to the notch on one side of the card. Electronically, 30-pin SIMMs were identical to 30-pin SIPPs.

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All-in-one A+ certification exam guide by Michael Meyers


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