Describir: Network planning and critical path scheduling

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|  --  //  | / \ || / //---`' | || | || | |  \ ||   -| ||-  |  \/  || 
|  --  \\  | \_/ || \ \\___   | \\_/ || | |__/ ||   _| ||_  | .  . || 
|______//   \___//   \_____||  \____//  |_____//   /_____// |_|\/|_|| 
`------`    `---`     `----`    `---`    -----`    `-----`  `-`  `-`  
                                                                      
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