compatible technology, so you can attach or remove peripherals without having to power off the system. Many different types of devices use USB, such as printers, scanners, mouses, and keyboards. USB allows faster data transfer rates than typical methods, such as a serial or parallel interface.

Only the latest kernel versions contain code for USB support at this time. Be sure to check hardware compatibility lists for a list of supported hardware.

Summary

This chapter gives you an overview of hardware components and how they work under Linux. In most cases, they work the same as in any other operating system, but for some devices, you must make some special considerations, including kernel support and availability of drivers. For the exam, remember the following key points:

Pay close attention to hardware compatibility and kernel support for Linux devices

Many devices need special drivers of kernel modules to work

Know the typical IRQ and I/O ports of popular devices

Know how to install and configure SCSI and ATA/IDE drives

578 Chapter 19 Study Guide

STUDY GUIDE

The Study Guide section provides you with the opportunity to test your knowledge about the Linux+ exam objectives that are covered in this chapter. The Assessment Questions provide practice for the real exam, and the Scenarios provide practice with real situations. If you get any questions wrong, use the answers to determine the part of the chapter that you should review before continuing.

Assessment Questions

1.What is the default IRQ for a floppy drive?

A.6

B.5

C.4

D.7

2.A SCSI host adapter came factory-installed with a SCSI ID of 1. What SCSI ID should the technician set the host adapter to?

A.1

B.0

C.7

D.2

3.Parallel port LPT 1 uses what I/O address?

A.1FO – 1F8

B.278 – 27F

C.2F8 – 2FF

D378 – 37F

4.You have just installed 2 IDE drives on one IDE channel of your system. How will each one be configured?

A.Master, Servant

B.First, Second

C.Primary, Secondary

D.Master, Slave

Chapter 19 Study Guide 579

5.How many devices can be added to a typical IDE or EIDE controller?

A.7

B.2

C.4

D.1

6.What type of slot is usually found on a laptop computer that can be used to install modem and network cards?

A.PCMCIA

B.PCI

C.AGP

D.SCSI

7.How many USB peripherals can you connect at once?

A.127

B.7

C.27

D.1

8.The red stripe on the edge of an IDE/ATA cable identifies what feature?

A.The cable supports cable select

B.The cable is UDMA cable

C.The wire that should be connected to Pin 1 on the hard drive

D.The cable is self-terminating

9.Which drive under Linux is indicated by /dev/sda?

A.Raid controller

B.Second SCSI drive

C.First IDE drive

D.First SCSI drive

10.What support needs to be added to the Linux kernel for multiprocessing?

A.APM support

B.SMP support

C.PCMCIA support

D.API support

580 Chapter 19 Study Guide

11.What application in Linux must properly support your video card to use GUI features?

A.X-windows

B.AGP

C.Screensaver

D.APM

12.What support is needed by your BIOS and Linux kernel to run power management on your laptop?

A.API

B.APG

C.PCMCIA

D.APM

13.Which IRQ does the serial port COM 1 use?

A.3

B.1

C.4

D.5

14.A second hard drive is being installed in a SCSI bus system. What should you do to the bus after the installation is complete?

A.The system should be rebooted

B.The bus should be reset

C.The bus should be terminated

D.The host adapter should be rebooted

15.What two serial com ports share IRQ 3?

A.COM 1 and COM 5

B.COM 2 and COM 3

C.COM 1 and COM 3

D.COM 2 and COM 4

Chapter 19 Study Guide 581

16.A Linux administrator has installed a second CPU on a dual CPU system. When tests are run afterwards, there is still no performance. What is the most likely cause of the problem?

A.The kernel must be able to support SMP

B.The system needs to be rebooted twice

C.There is not enough memory

D.No applications are currently running

17.What should you check before installing a hardware device on a Linux system?

A.Video support

B.Hardware compatibility

C.Bug reports

D.Memory usage

18.What type of RAM supports error checking?

A.SIMM

B.EDO

C.ECC

D.ROM

19.What is the device name of the first rewinding SCSI tape device in a Linux system?

A./dev/nst1

B./dev/st0

C./dev/st1

D./dev/nst0

20.A system is installed with 128MB of memory, but when the system boots up, it only recognizes 64MB. What is mostly likely the cause of the problem?

A.The RAM does not support error checking

B.The RAM is bad

C.The amount of memory needs to be set in LILO

D.The RAM is not compatible with the kernel