Incorrect Answers B, C: Hardware configured and Windows 9x legacy devices might be configurable from within the OS or not at all. These devices are not assigned any IRQ, they just use the IRQ that they have been configured with. D: Plug and play devices configure themselves and use the remaining available IRQs.
220 - 301 Leading the way in IT testing and certification tools, - 202 - QUESTION NO: 27 A PC’s CMOS information was erased. What should you do first after re-entering the correct settings? A. Replace the CMOS battery. B. Check the motherboard reset pin. C. Test the CMOS battery’s voltage level. D. Observe the PC for problem recurrence. Answer: D Explanation: We should observe and see if the problem reoccurs. If it reoccurs we should replace the CMOS battery. Incorrect Answers A: We should replace the CMOS battery before re-entering correct settings, not after. When we replace the battery the CMOS settings will be lost. B: The motherboard reset pin is used to reset the CMOS settings. It would not serve any point in checking this pin. C: Checking the CMOS battery level is no usually done. QUESTION NO: 28 What is the first critical component that a fail motherboard battery effects? A. RAM. B. ROM. C. BIOS. D. CMOS. Answer: D Explanation: The CMOS memory uses the motherboard battery to keep its settings. Incorrect Answers A: RAM do not use the motherboard battery. B: ROM is not affected. C: The BIOS is the firmware that handles the settings in CMOS. The BIOS program is stored in ROM and is not affected by motherboard battery. QUESTION NO: 29 In a Plug and Play system when installing a second hard drive what determines the drive letter?
220 - 301 Leading the way in IT testing and certification tools, - 203 - A. End user B. Position on cable C. Operating system D. Drive manufacturer Answer: B Explanation: A PC has one IDE controller and two IDE port. Each port supports two IDE devices. One must be master and the other must be slave. Furthermore, the positioning on the cable determines which drive letter the device receives. This assignment is handled by the BIOS. Incorrect Answers A: Typically the drive letter assignment is automatic. However, on some systems the end user can decide this assignment himself. This is not so common yet. C: Different OSes can give different possibilities for assigning drive letters. However, as many OSes still does not support this feature. Furthermore, the initial assignment of drive letters is based on the positioning on the cable. Some OSes give the possibilities to re-assign these drive letters. D: The IDE standard is general and do not depend on different brands of hard drives. The position on the IDE cable decides the driver letter of the hard drive. QUESTION NO: 30 Where can you find the BIOS version ID? A. System properties B. BIOS setup screens C. Motherboard manual D. On the back of the computer Answer: B Explanation: The BIOS version ID can be seen when using the BIOS setup screens.
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