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CompTIA A+

CompTIA A+ Certification

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
Created by: dacheeves

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