Review Questions

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1. What action would you take first if your mouse pointer were not responding correctly?

   1. Check DMA channel 2.

   2. Check the mouse ball for debris.

   3. Check COM2 settings.

   4. Cascade IRQ 2 to IRQ 9.

   Correct Answer = B.

   Debris collected on you mouse roller ball can cause your mouse pointer to respond incorrectly. The debris actually gets collected by the rubber mouse roller ball and affects the internal components of the mouse.

2. The default address used by the primary IDE controller is?

   1. C000-C7FFF

   2. 1F0h

   3. 378h

   4. 3F8h

   Correct Answer = B.

   C000-C7FFF is used for the video adapter memory address. The memory address 378h is reserved for LPT1, and 3F8h is the memory address reserved for COM1.

3. The default address used by the secondary IDE controller is?

   1. 170h

   2. 1F0h

   3. 378h

   4. 3F8h

   Correct Answer = A.

   1F0h is the memory address reserved for the primary IDE controller. 3F8h is the memory address reserved for COM1. 378h is the memory address reserved for LPT1.

4. The default I/O address for COM2 is?

   1. 170h

   2. 1F0h

   3. 378h

   4. 2F8h

   Correct Answer = D.

   170h is reserved for the secondary IDE controller. 1F0h is the memory address reserved for the primary IDE controller. 378h is the memory address reserved for LPT1.

5. The floppy drive controller uses which DMA channel?

   1. 1

   2. 2

   3. 4

   4. 7

   Correct Answer = B.

   DMA channel 2 is used for a floppy drive or possibly a tape drive unit. DMA channels 1 and 7 are available. DMA channel 4 is used for the secondary DMA controller (cascades to DMA channels 0-3).

6. How many devices can you attach (chain) to a single IDE controller or channel?

   1. 1

   2. 2

   3. 4

   4. 127

   Correct Answer = B.

   Two devices can be attached to a single IDE controller. For example, the first device attached to the primary IDE controller would be your ‘master,' or primary hard drive. The second device attached to your primary IDE/ATA controller is your ‘slave,' or secondary device.

7. Which IRQ is reserved for the system timer?

   1. 0

   2. 1

   3. 2

   4. 9

   Correct Answer = A.

   IRQ 1 is reserved for a standard 101/102 keyboard. IRQ 2 is an interrupt controller (cascaded to IRQ 9). IRQ 9 is cascaded to IRQ 2.

8. Which of the following are valid touch screen technologies? (Choose Three)

   1. Capacitive

   2. Conducive

   3. Resistive

   4. Surface wave

   5. Switch

   6. All are valid touch screen technologies.

   Correct Answers = A, C, and D.

   Common touch screen technologies include capacitive, resistive, and surface wave technologies.

9. What is the most common way to transfer information between two PDAs?

   1. IR

   2. USB

   3. SCSI

   4. LPT

   5. RS232

   6. IEEE 1284

   7. None of the above

   Correct Answer = A.

   The most common methods used today to transfer information from a one PDA to another PDA are through IR or Bluetooth (wireless specification standard).

10. Which of the following ports are most often used when connecting a digital camera to a computer system? (Choose Two)

    1. SCSI port

    2. Port 25

    3. USB port

    4. Parallel port

    5. IEEE 1394-compliant port

    6. Port 1099

    Correct Answers = C and E.

    Most digital cameras are connected to a computer system using a USB port or serial port that is IEEE 1394 compliant.

11. A laptop user who uses a docking station while at work calls you and states they cannot connect to the network, and their laptop's screen is 'all messed up.' What is most likely the problem?

    1. The NIC card's video driver is corrupt.

    2. Wrong user profile.

    3. Wrong hardware profile.

    4. The network is malfunctioning.

    5. The ports on the laptop are not IEEE 1284 compliant.

    6. None of the above.

    Correct Answer = C.

    One of the most common mistakes made by laptop users is in choosing the wrong hardware profile when a system is booted. If you choose a docked profile when the laptop is undocked, or vice versa, it is likely that the wrong device drivers will be loaded for video, mouse, keyboard, network, printing, or sound.

12. Which of the following devices is similar to a docking station, with the exception that it doesn't provide extra slots for storage and expansion cards?

    1. A port replicator

    2. A port sniffer

    3. A hardware profile

    4. An AC/DC converter

    5. None of the above

    Correct Answer = A.

    A port replicator is similar to a docking station, except it does not have slots for storage or expansion cards.

13. Which of the following battery types suffer from the phenomenon known as memory effect?

    1. Lithium ion

    2. NiMH

    3. NiCad

    4. Copper tip

    5. Silver bunny battery

    6. All of the above

    Correct Answer = C.

    Earlier NiCad batteries suffered from a phenomenon known as memory effect. If these battery types were recharged before most of their power was used up, they would lose their ability to become fully charged.

14. Which of the following produces hydrogen that is converted from methanol or alcohol and may replace the lithium ion batteries used today?

    1. Lithium ion

    2. NiMH

    3. NiCad

    4. Copper tip

    5. Fuel cell

    6. None of the above

    Correct Answer = E.

A fuel cell produces hydrogen that is converted from methanol or alcohol. It is proposed that fuel cells may replace the popular lithium ion batteries used in most laptops. Fuel cells last up to 10 hours without the need to recharge.

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