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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 […]

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Not enough server storage

Error messages: Not enough server storage is available to process this command. Not enough memory to complete transaction. Close some applications and retry. These error messages on a computer, which we will call computer A, can indicate the IRPStackSize bug on the other machine, the server that has the share, which we will call computer […]

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Windows Server 2008 – Server Manager

Think of the the Server Manager as the focal point for installing, configuring, and managing your computer’s roles and features.  Server Manager replaces W2K3’s Manage Your Server, Configure Your Server, and Add or Remove Windows Components. How to Launch the Server Manager The Windows 2008 version of Server Manager is intelligent enough to work out […]

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Who Says Macs Don’t Get Viruses?

Lots of people say “ Don’t worry about viruses, just get a Mac.” Is this advice on the level? Let’s take a look at the history of Macintosh security, and learn what we can from the Mac. Today we’ll be talking about a lot of the myths and realities of security and viruses on the […]

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