# A+ Essentials Chapter 6

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Expansion Bus

In this chapter, you will learn how to

• Identify the structure and function of the expansion bus
• Explain classic system resources
• Identify the modern expansion bus slots
• Install expansion cards properly
• Troubleshoot expansion card problems

• 1.

### Which of the following statements about the expansion bus is true?

• A.

The expansion bus runs at the speed of the system clock.

• B.

The expansion bus crystal sets the speed for the expansion bus.

• C.

The CPU communicates with RAM via the expansion bus.

• D.

The frontside bus is another name for the expansion bus.

B. The expansion bus crystal sets the speed for the expansion bus.
Explanation
A separate expansion bus crystal enables the expansion bus to run at a different speed than the frontside bus.

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• 2.

### Which of the following statements best describes the hexadecimal numberingsystem?

• A.

It is a binary numbering system that uses only two digits, a 0 and a 1.

• B.

It is another name for the decimal numbering system with ten digits, 0 through 9.

• C.

It is an eight-digit numbering system, using letters A through H.

• D.

It is a sixteen-digit numbering system that can express all its values by using four wires.

D. It is a sixteen-digit numbering system that can express all its values by using four wires.
Explanation
The hexadecimal numbering system represents binary values using the characters 0–9 and A–F.

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• 3.

### AGP stands for ____________ and is an expansion of the ____________ bus.

• A.

Accelerated Graphics Port, PCI

• B.

Alternative Graphics Port, PCI

• C.

Accelerated Graphics Port, ISA

• D.

Alternative Graphics Port, ISA

A. Accelerated Graphics Port, PCI
Explanation
The Accelerated Graphics Port is a specialized PCI slot used for video cards.

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• 4.

### Which of these devices is likely to still use DMA?

• A.

USB flash drive

• B.

Floppy drive

• C.

Hard drive

• D.

CD-ROM drive

B. Floppy drive
Explanation
On most modern PCs, only the floppy drive (if one is installed!) still uses classic DMA.

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• 5.

### What does a red “X” next to a device in Device Manager indicate?

• A.

A compatible driver has been installed that may not provide all the functions for the device.

• B.

The device is missing or Windows cannot recognize it.

• C.

The system resources have been assigned manually.

• D.

The device has been disabled because it is damaged or has a system resource conflict.

B. The device is missing or Windows cannot recognize it.
Explanation
The dreaded red “X” can mean a bad connection, a bad driver, or even a bad card.

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• 6.

### What are the standard system resource assignments for LPT2?

• A.

I/O address 378 and IRQ7

• B.

I/O address 3F8 and IRQ4

• C.

I/O address 278 and IRQ5

• D.

I/O address 2F8 and IRQ5

B. I/O address 3F8 and IRQ4
Explanation
The LPT2 port is by default assigned I/O base address 278 and IRQ5.

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• 7.

### When installing an expansion card, which of these should you do?

• A.

Make sure the computer is plugged into the AC wall outlet.

• B.

Hold the card only by its slot connectors.

• C.

Use firm but not excessive force to snap the card into the slot.

• D.

Avoid letting the metal flange touch the PC case.

C. Use firm but not excessive force to snap the card into the slot.
Explanation
After handling the card only by the edges and avoiding the slot
connectors, you should snap it into an open slot on an unplugged system, pushing firmly and evenly until the metal flange is in contact with the slot on the case.

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• 8.

### How does the CPU communicate with a device?

• A.

It uses the device’s I/O addresses over the address bus.

• B.

It uses the device’s IRQ addresses over the data bus.

• C.

It uses the device’s COM port over the address bus.

• D.

It uses the device’s DMA over the data bus.

A. It uses the device’s I/O addresses over the address bus.
Explanation
The CPU uses the device’s I/O addresses over the address bus to communicate with that device.

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• 9.

### Which variation of the PCI bus was specifically designed for laptops?

• A.

PCI-X

• B.

PCIe

• C.

Mini-PCI

• D.

AGP

C. Mini-PCI
Explanation
The Mini-PCI format conserves space and power, making it an ideal card type for use in laptops.

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• Current Version
• Mar 21, 2023
Quiz Edited by
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• Oct 28, 2008
Quiz Created by
Darren McMahon

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