click below
click below
Normal Size Small Size show me how
CompTIA A+
CompTIA A+ Certification
| Question | Answer |
|---|---|
| IRQ #0 | System Timer |
| IRQ #1 | Keyboard |
| IRQ #2 | Cascade to/form IRQ #9 (Used by some VGA and Network Cards) |
| IRQ #3 | COM2 and COM4 |
| IRQ #4 | COM1 and COM3 |
| IRQ #5 | LPT2 or Sound Card |
| IRQ #6 | Floppy disk controller |
| IRQ #7 | LPT1 or Sound Card |
| IRQ #8 | Real Time Clock |
| IRQ #9 | Software redirected to interrupt 0AH |
| IRQ #10 | Open |
| IRQ #11 | Open |
| IRQ #12 | PS/2 port |
| IRQ #13 | Coprocessor |
| IRQ #14 | Primary IDE interface |
| IRQ #15 | Secondary IDE interface |
| What are the two primary types of SCSI? | LVD (Low Voltage Differential) HVD (High Voltage Differential) |
| How many pins does a 16 bit SCSI connector have? | 68 pins |
| Serial Connector Types | DB-9 & DB-25 |
| Null Modem Cable | Two way communication |
| Parallel Port Modes | SPP (Standard Parallel Port) basic ECP (Extended Capabilities Port) common now EPP (Enhanced Parallel Port) older devices |
| External SCSI devices use | 50-Pin connectors |
| The higher the SCSI ID | The Higher the priority |
| How many devices does USB support on one PC | 127 |
| How many IRq's does USB take up? | 1 |
| PCMCIA Types | Type1: Memory, one slot, 3.3 mm Type2: one slot, 5.0 mm Type3: hard drives, two slots, 10.5 mm |