CompTIA®A+ Exam Notes : Select The Appropriate Components For A Custom PC

1. PC Hardware

1.13 Given a scenario, select the appropriate components for a custom PC

1. 32-bit Operating systems (especially, workstation Operating Systems such as XP) usually support only up to 4GB of memory due to address bus limitation. It is recommended to go for 64-bit operating

2. system if you want to use more than 4 GB of memory. 2. SLI technology is designed for PCI Express and not AGP. This new bus has superior bandwidth (two to four times AGP 8X), support for isochronous data transport, and the capability to drive multiple highspeed graphics devices like running video games.

3. Computers used for graphic design, computer-aided design (CAD) applications, and computer-aided manufacturing (CAM) require much more horsepower than the standard PC. Specifically, they require multiple or more powerful processors, more robust video cards, and significantly more memory.

4. SATA hard disks may be used for building RAID arrays.

5. Dynamic disks are not supported in portable computers and on external USB devices. The primary reason being that dynamic disks are used for enabling RAID configuration or back configuration, which requires two or more disks to be present. Usually, portable computers and USB hard disk drives come with single hard drive

6. RAID Level 10 requires a minimum of 4 drives to implement. RAID 10 is implemented as a striped array whose segments are RAID 1 arrays. RAID 10 has the same fault tolerance as RAID level 1. If a disk fails replace the failed disk and see if the RAID builds up. For single disk failures, usually, RAID 10 heals itself.

7. The hardware on the machine must have enough memory, hard drive space, and processor capability to support the virtualization. You also need the software to make virtualization possible.

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