Describir: Network planning and critical path scheduling

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