text: – Services: Services allow you to scale containers across multiple Docker daemons, 
  
  which all work together as a swarm with multiple managers and workers. Each member 
  of a swarm is a Docker daemon, and the daemons all communicate by using the 
  Docker API. 
  
  – NameSpace: In context of Docker, NameSpace is the technology that provides isolated 
  
  workspaces for a container (see Table 2-1). Each container encapsulates all its 
  features within the namespace that is associated with that specific container. 
  
  Table 2-1 NameSpace 
  
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              [html]<thead><tr><td>Namespace</td><td>Description</td></tr></thead><tbody><tr><td>PID</td><td>Process isolation ( PID : Process ID )</td></tr><tr><td>NET</td><td>Managing network interfaces ( NET : Networking )</td></tr><tr><td>IPC</td><td>Managing access to IPC resources ( IPC : InterProcess Communication )</td></tr><tr><td>MNT</td><td>Managing file system mount points ( MNT : Mount )</td></tr><tr><td>UTS</td><td>Isolating kernel and version identifiers. ( UTS : UNIX Timesharing System )</td></tr></tbody>
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