Drive Interface Standards

Interface Standard Speed Notes IDE/ATA 2.1 MBps – 8.3 MBps 528 MB limit PIO modes 0-2 ATA-2/Fast ATA 16.6 MBps > 528 MB, 4 IDE devices PIO modes 3-4 DMA 1-2 ATA-3 Nominal speed increase SMART ATAPI-4, Ultra ATA, Fast ATA-2, Ultra DMA Modes 0-2, DMA/33 33 MBps Introduced DMA modes and 80-conductor cable ATAPI-5, Ultra ATA/66, Ultra DMA/66 66.6 […]

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Command Line Utilities

Attrib Displays, sets, or removes the read-only, archive, system, and hidden attributes assigned to files or directories. Used without parameters, attrib displays attributes of all files in the current directory. Syntax attrib [{+r | -r}] [{+a | -a}] [{+s | -s}] [{+h | -h}] [[Drive:][Path] FileName] [/s[/d]] Parameters +r Sets the read-only file attribute. -r Clears the read-only file attribute. […]

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Cables

Cable Type Common Name Physical Layer Name Speed Max Length (M) RG-6 Satellite TV N/A N/A RG-8 Thicknet 10Base5 10 Mbps 50 (drop) 500 (backbone) RG-58 Thinnet 10Base2 10 Mbps 185 RG-59 Cable TV N/A N/A CAT3 UTP Fast Ethernet 10 Base-T 10/100 Mbps 100 CAT4 UTP Fast Ethernet 10 Base-T 16 Mbps 100 CAT5 Fast Ethernet 10 Base-T 100 […]

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IP Address Classes

Address Class Network ID Default SN Mask # Networks # Hosts Class A 1-126.0.0.0 (0) 255.0.0.0 126 16,777,214 Class B 128-191.0.0.0 (10) 255.255.0.0 16,384 65,534 Class C 192-223.0.0.0 (110) 255.255.255.0 2,097,152 254 Class A Loopback Address: 127.0.0.0 Private IP Addresses Class A 10.0.0.1 – 10.255.255.254 Class B 172.16.0.1 – 172.31.255.254 Class C 192.168.0.1 – 192.168.255.254

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Major Operating System Files

Windows 9x AUTOEXEC.BAT Plain text file. Batch file that executes command prompt instructions. Configures command prompt environment and loads TSRs. COMMAND.COM Command interpreter. Provides user interface to command prompt & processes keyboard commands. Contains other internal commands such as CD, COPY, VER, DIR. CONFIG.SYS Plain text file. Activates memory areas and loads real-mode device drivers using “DEVICE=” (Always use full […]

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