1. A,B,C,E The motherboard is essential to computer operation in large part because of the two major buses it contains: the system bus and the I/O bus. Together, these buses carry all the information between the different parts of the computer. 2. A,C Motherboards use expansion slots to provide support for additional I/O devices and high- speed video/graphic cards. The most common slots are PCI, AGP, and PCI-Express. 3. A,B,C,D SCSI is a more diversified driver interface that can use non-hard disk drives. 4. A,B,C The ATX family of motherboards has beat desktop comp. designs since late 1990. ATX- Advanced Technology Extended, replaces AT and Baby-AT. 5. G Motherboards in the ATX and BTX families have integrated I/O ports; including including serial, parallel, USB, PS/2, etc. 6. D Install the sound card then connect 1/8 in mini-jack cables from speakers and microphone to sound card. 7. B DDR SDRAM has 184 corresponding pins, the older version SDRAM has 168 pins. 8. A The most common speed for PCI is 33MHz, although it can vary determined by different variables. 9. C PCI Express has 4 major types of ports; x1,x4,x8,x16. 10. B AGP x4 can transmit 1066 MBps, but PCIe x1 can only transmit 500 MBps. 11. A SATA 2nd gen. goes at 3GBps 12. A,C Always turn off power before unplugging the ribbon cables. 13. A,D If comp. doesn't start check all connections; main power, CPU, RAM, and video card. 14. B The headphone connection is a shade of green. 15. C Before turning on the computer connect all the cords for the card.