The very basic things any executive should know about IT infrastructure. Table of contents bellow. More about the author at . Links in video: Inside Google Data Center IBM zEnterprise System TABLE OF CONTENTS 0:49 Data Center 2:30 The System Administrator 4:05 Elements in a LAN 4:41 Servers: Functions and Names 8:25 Servers: Mainframe 9:15 Severs: High Availability Server 10:24 Severs: Cluster 12:09 Severs: Virtual Servers 14:52 Clients 17:06 Network Devices 20:15 Communication Media: Wired - Cable 21:58 Communication Media: Wireless 23:23 Example: INCAE 25:15 Types of Networks: Intro 25:40 Types of Networks: LAN 26:09 Types of Networks: Backbone 27:25 Types of Networks: MAN 29:42 Types of Networks: WAN 30:39 Intranet and Extranet