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ICS 392 Ch4a - Chapter 4 Server Hardware DePaul University...

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Chapter 4 Server Hardware DePaul University ICS 392 Arakawa
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Servers Client/Server Hardware Computer and peripherals (e.g. storage) Software Operating system (usually some flavor of Unix or Windows) Applications web server software email server software commerce server software,
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Servers 101 Client Requests Hyperlinks URL Convert URL Into IP via Doman Name System Server Receive Request Protocols (http, https, ftp) Provide resource
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Servers 102: Resources Documents (Blackboard) Sound Files (iTunes) Picture Files (flickr, photobucket) Video Files (Youtube) Applications (Google docs)
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Memory 101 2 x (2 2 ) 2 x 2 = 4 (2 3 ) 2 x 2 x 2 = 8 (2 10 ) = 1,024 Bit: binary digit 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 (# of possible values) 2 = 256 (# of picks) 8 1 Byte = 8 bits
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Memory 102 1,024 bytes = 1 Kilobyte (1KB) (10 3 ) 1,024 Kilobytes = 1 Megabyte (1MB) (10 6 ) 1,024 Megabytes = 1 Gigabyte (1GB) (10 9 ) 1,024 Gigabytes = 1 Terabyte (1TB) (10 12 ) 1,024 Terabytes = 1 Petabyte (1PB) (10 15 )
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