CompTIA A+® Certification All-In-One For Dummies®, 2nd Edition

1.7. Answers

1. D. The ATX board had an original motherboard speed of 100 MHz. Older boards, such as the Baby AT, had motherboard speeds of 60 and 66 MHz. See "ATX".

2. D. The PCI bus architecture is a 32-bit and 64-bit architecture that runs at 33 MHz. AGP runs at 66 MHz, and both ISA and EISA run at 8 MHz. Review "PCI".

3. A. The battery is responsible for maintaining a charge so that the CMOS RAM doesn't lose its information. The BIOS chip stores the core system code that allows all the devices to communicate. Check out "Battery".

4. B. An IDE controller has 40 pins to allow a 40-wire ribbon cable to connect a hard disk or CD-ROM to the motherboard. A floppy controller uses 33 pins, and 50 pins are used by internal SCSI devices. Peruse "IDE connections".

5. C. The Baby AT motherboard uses a DIN connector as the keyboard connector and is the only I/O port found on the Baby AT and the full AT motherboards. Both slot 1, which is the processor slot for Pentium II processors, and the AGP slot that is used by video cards, exist on the ATX board. Take a look at "Baby AT".

6. C. A computer can support up to 127 USB devices in a USB chain. Peek at "USB ports".

7. A. A floppy drive connector has 34 pins, and an IDE connector has 40 pins, and internal SCSI devices have 50 pins. Look over "Floppy disk connectors".

8. B. In the past, you were likely to see MCA in older IBM servers because IBM developed the MCA bus architecture. Study "MCA".

9. B. Level 2 (L2) cache is the type of cache memory that is found on motherboards, ...