IRQ's, COM's, I/O ADDRESSES, ESD, DMA's, CONNECTORS, SAFETY
QUESTIONS #1
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| 11. WHAT IS THE STANDARD I/O FOR HARD DISK CONTROLLER? . A. 3E8h B. 3F8h C. 2F8h D. 1F0h |
| 12. What is the IRQ for the floppy drive controller? A. IRQ 8 B. IRQ 7 C. IRQ 6 D. IRQ 5 |
| 13. What is the I/O address for COM 4? A. 2F8h B. 3F8h C. 3E8h D. 2E8h |
| 14. What is the I/O for COM 2? A. 2F8h B. 2E8h C. 3E8h D. 3F8h |
| 15. What IRQ is the LPT1 port set to use? A. 2 B. 5 C. 7 D. 9 |
| 16. COM 3 will normally use which IRQ by default? A. 2 B. 3 C. 4 D. 5 |
| 17 . A parallel port (LPT2) will have what type of connector? A. DB9 B. DB25 C. RJ45 D. USB |
| 18 .Which IRQ is typically assigned to an external modem? A. 4 B. 5 C. 3 D. NONE |
| 19. What device measures the amount of power being generated by a power supply? A. ESD STRAP B. Ohmmeter C. Multimeter D. Torx meter |
| 20 . What IRQ is the LPT2 port set to use? A. 3 B. 4 C. 5 D. 7 |
| 21 . What two ports use IRQ 5 and 7? A. COM1 and COM3 B. COM2 and COM4 C. LPT1 and LPT2 D. LPT3 and LPT4 |
| 22. Where should static-sensitive components be stored when they're not being used? A. Paper container B. Styrofoam C. Plastic bag D. Anti-static bag |
| 23. What is the danger when disassembling a CRT? A. The CRT is extreamly toxic B. The Capacitor can hold a strong electric charge C. It is only dangerous when plugged in D. It should be treated the same any device |
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| 25 .Which does not use a high powered concentrated light and will not pose a threat to the eyes? A. Laser Printer B. CD-ROM C. Optical mouse D. Scanner |
| 26 . Which factor is not a cause of static electricity? A. Loose connections B. Unshielded cables C. High humidity D. Ungrounded devices |
| 27 .What is the interrupt request for the hard disk controller ? A. 11 B. 12 C. 13 D. 14 |
| 28 . What is the IRQ for COM1? A. 1 B. 2 C. 3 D. 4 |
| 29 . What connector on a network card is associated with a 10BASE2 cable? A. RJ11 B. BNC C. RJ45 D. DB25 |
| 30 . IRQ 0 is reserved for? A. Keyboard B. System timer C. LPT2 D. Floppy drive |
| 31 . IRQ 1 is reserved for? A. System timer B. Keyboard C. LPT2 D. VGA |
| 32 . IRQ 2 is reserved for? A. LPT2 B. COM3 C. Cascade to IRQ9 D. System timer |
| 33 . IRQ 3 is reserved for? A. COM3 B. System timer C. COM2 D. VGA |
| 34 . IRQ 4 is reserved for? A. COM1 B. LPT2 C. COM2 D. System timer |
| 35 . IRQ 5 is reserved for? A. LPT1 B. LPT2 C. System timer D. VGA |
| 36 . IRQ 7 is reserved for? A. LPT1 B. COM3 C. System timer D. VGA display |
| 37 .How many bits in a byte? A. 8 B. 7 C. 16 D. 32 |
| 38 . A male DB-25 port is most likely a: A. Network port B. Serial port C. Parallel port D. Game port |
| 39 .A typical fixed disk sector is how many bytes? A. 500 B. 1024 C. 64 D. 512 |
| 40 . What type of connector is most likely found on a printer? A. DB-9 B. Centronics 36 C. DB-25 D. RJ45 |
| 41 . Which item should not be serviced? A. Hard disk B. Computer C. Keyboard D. Power supply |
| 42 . What is the IRQ for COM 2? A. IRQ 2 B. IRQ 3 C. IRQ 4 D. IRQ 5 |
| 43 . What is the default base memory address of LPT1 ? A. 278h B. 2e8h C. 2f8h D. 378h |
| 44. Which type of connector is used for a parallel connection on a printer? A. 25-pin (DB-25) male B. 9-pin (DB-9) male C. 25-pin (DB-25) female D. Centronics (36-pin) D-Shell |
| 45. RS-232 is a standard that applies to? A. parallel ports B. serial ports C. networks D. frequencies |
| 46 .Comm ports use what? A. 15 pin female connector B. 25 pin male connector C. parallel connector D. edge connector |
| 47. A COM port is a _______ port. A. parallel B. serial C. scsi D. static |
| 48. A CD-Rom drive always uses IRQ: A. 5 B. 9 C. 11 D. depends on the adapter it's attached to |
| 49. A sound card typically uses which IRQ? A. 1 B. 5 C. 6 D. 15 |
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| 50 . What should you use to clean the plastic cover on your monitor or PC? A. alcohol B. lint-free cloth C. WD-40 D. windex |
| 51. Which of the following are input devices only? A. mouse B. modem C. video card D. keyboard |
| 52 . Which component stores an electrical charge? A. capacitor B. reostat C. transistor D. resistor |
| 53 . The floppy drive uses which DMA (direct memory access) channel? A. 1 B. 2 C. 3 D. 4 |
| 54. If COM2 and LPT1 are already being used, which of the following methods could be used to connect another printer? A. Printers only use LPT1 B. Install another printer card in the computer C. Change the IRQ of COM2 D. Configure it as COM1 |
| 55. Which of the below connectors is normally used as a serial port on personal computers? A. Female DB9 B. Female DB25 C. Male DB9 D. RJ-45 |
| 56.Which of the following can cause conflicts when you install add-on cards in a personal computer? A. ROM addresses B. I/O addresses C. DMA channels D. All of the above |
| 57 . The total length of your SCSI cables should not exceed ______. A. 3 ft B. 6 ft C. 18 ft D. 100 ft |
| 58 . What is the small plastic connector called that is on the end of an unshielded twisted pair wire? A. RJ-11 B. RJ-45 C. DB-9 D. DB25 |
| 59. SCSI-2 Cables have how many pins? A. 64 B. 72 C. 50 D. 75 |
| 60. A ESD wrist grounding strap contains a: A. capacitor B. resistor C. diode D. transistor |
| 61. What is the base memory address of LPT1 ? A. 278h B. 2e7h C. 378h D. 2f8h |
| 62 .What is the interrupt request for LPT 1? A. IRQ 7 B. IRQ 8 C. IRQ 9 D. IRQ 10 |
| 63. What is normally the interrupt request for LPT 2?. A. IRQ 2 B. IRQ 3 C. IRQ 4 D. IRQ 5 |
| 64. What should you use to discharge a CRT ? A. High voltage probe B. Logic probe C. Anti static wrist strap D. Grounding mat |
| 65 . What ports are external modems usually connected to ? A. Serial port B. Parallel port C. LPT port D. SCSI port |
| 66 . A parallel port sends and receives data how many bits at a time A. 1 B. 7 C. 8 D. 16 |
| 67. You have a device using IRQ 9. Which IRQ can you not use as a result? A. IRQ 2 B. IRQ 3 C. IRQ 5 D. IRQ 4 |
| 68 . What Interrupt request is redirected to IRQ 9? A. IRQ 5 B. IRQ 4 C. IRQ 3 D. IRQ 2 |
| 69. Serial ports send data how many bits at a time? A. 1 B. 8 C. 16 D. 32 |
| 70. What uses a DIN-5 or PS2 connector? A. modem B. monitor C. printer D. keyboard |
| 71. What uses a 9 pin serial or PS2 connector? A. modem B. mouse C. speaker D. monitor |
| 72. Phone lines use what type of connector? A. RJ-45 B. RJ-11 C. RJ-22 D. RJ-15 |
| 73. Which provides the quickest data access time? A. ram B. IDE hard drive C. cd-rom drive D. SCSI hard drive |
| 74. Comm ports use: (select all that apply) A. 9 pin male connector B. 15 pin female connector C. 25 pin male connector D. edge connector |
| RETURN TO TOP |
| 75 . Select all true statements: A. com1 and com3 share the same IRQ B. com1 and com2 share the same IRQ C. com2 and com3 share the same IRQ D. com2 and com4share the same IRQ |
| 76 You have a serial scanner connected to your computer configured to
use com3. It is turned on. Your modem is using com1, and you can't
dial out. What is the most likely problem?
A. you have a conflict with IRQ 4 B. you have a loose connection C. you have an i/o conflict D. you have a conflict with IRQ 3 |
| 77 What ports external modems are usually connected to ?? A. SCSI port B. LPT port C. Parallel port D. Serial port |
| 78 Whenever you have a hardware resource conflict, it will more likely
be an IRQ conflict rather than an i/o conflict because:? A. i/o addresses cannot conflict B. there are alot more i/o addresses than IRQs C. software tends to correct i/o conflicts D. the bios sometimes has more of a problem controlling IRQs |
| 79 In addition to i/o port addresses, SCSI adapters also use a range
of rom addresses for their onboard bios? A. TRUE B. FALSE |
| 80 The CPU clock speed is measured in ? A. Seconds B. Megahertz C. Milliseconds D. Ohms |
| 81. A static jolt of as little of ____ volts can fry most any PC integrated circuit ? A. 40 B. 200 C. 500 D. 1000 |
| 82. A human cannot feel a static discharge as high as ____ volts? A. 200 B. 1000 C. 5000 D. 10,000 |
| 83. ESD is ___________.? A. electrostatic discharge B. electric surge device C. electronic stasis device D. electronic system driver |
| 84. On the PC side, the printer port is a: ? A. 25 pin female parallel connector B. 15 pin female serial connector C. 15 pin female parallel connector D. 25 pin female serial connector |
| 85 . The type of BIOS chip in which data can be erased by shining ultraviolet light through the special window is called ? A. ROM BIOS B. PROM C. EPROM D. EEPROM |
| 86 . If COM2 and LPT1 are already being used, which of the following methods could be
used to connect another printer ? A. Configure it as COM1 or LPT2 B. Put in a SCSI card and connect a printer to it C. Use a switch box to connect the peripherals together |
| 87. Which of the below connectors are normally used as serial ports on personal computers? A. maleDB9, male DB15 B. male DB9, male DB25 C. female DB5 D. female DB15 |
| 88. Which of the following are you most likely to find on external SCSI devices? A. 2 male 50 pin Centronic connectors B. 2 female 25 pin Centronic connectors C. 2 male 25 pin Centronic connectors D. 2 female 50 pin Centronic connectors |
| 89 . What is the common ID number assigned to the host SCSI adapter in a PC?? A. 7 B. 8 C. 1 D. 0 |
| 90. Select all that apply. When troubleshooting an expansion board, you should take into
consideration the possibility of conflicts in all of the following except: ? A. I/O addresses B. DMA channels C. ROM addresses D. RAM addresses |
| 91 . What is the best method of cleaning a dusty PC keyboard? ? A. Remove the bezel and blow out the dust. B. Remove the bezel and vacuum out the dust C. Flush out the dust with a mild liquid detergent D. Wipe out the dust with a wet cloth |
| 92. A customer has one printer on LPT1 and wants to add another printer. To which
port/s can it be connected? ? A. Game port B. COM1 ,LPT2 C. LPT2 , COM2 D. COM2 |
| 93. An IRQ allows interface cards to: ? A. Interrupt the CPU to request service B. Pass data to the CPU to be processed C. Pass data from one card to another D. Pass data to the computers memory |
| 94. What is a 15-pin female connector used for ? A. VGA monitors B. printer C. mouse D. modem |
| 95. When power is restored after a power outage, what should you do to protect your system? A. Disconnect the CRT. B. Unplug all power cords. C. Close all programs. D. Turn off the power. |
| 96. Electrostatic discharge occurs when objects ? A. have dissimilar electric potential B. are removed from their protective bags C. are in a humid environmen D. are ungrounded |
| 97 Digital multimeter is set for Ohm +20k scale. You will read ___ while measuring a good 2 amp fuse.? A. 0.02 B. 0.20 C. 2.00 D. 0.00 |
| 98 What device should never be connected to the uninterrupted power supply - "UPS"? A. A laptop computer B. A laser printer C. A monitor D. A desktop computer |
| 99. You are testing a fuse with a multimeter. You set the multimeter to 10K scale. What should be a reading of a good 1A fuse? A. 0 B. 0.1 C. 1.0 D. Infinity |
| 100 How much data can a 3.5 inch double-density floppy disk hold? A. 320 KB B. 360 KB C. 720 KB D. 1.44 MB |
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| IRQ's |
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IRQ 0 System Timer IRQ 1 Keyboard IRQ 2 Cascade to IRQ 9 IRQ 3 Com 2&4 (mouse) IRQ 4 Com 1&3 (modem) IRQ 5 LPT 2 (but usually Sound Card ) IRQ 6 Floppy drive IRQ 7 LPT Port 1 (Printer) IRQ 8 Real time clock IRQ 9 VGA, NIC (redirect to IRQ 2) IRQ 10 CD ROM Drive IRQ 11 Open IRQ 12 Open (Bus mouse port) IRQ 13 Math co-processor IRQ 14 IDE Controller (hard disk drive) IRQ 15 PCI/ISA Bridge (motherboard) |
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| BINARY NUMBERS | |||||||
| MOST SIG. | LEAST SIG. | ||||||
| 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
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