ENVS 1800 Lecture Notes - Lecture 14: Bentley University, Network Administrator
14 May 2018
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ENVS 1800 Tutorial 14 Notes – File Manager
Introduction
• Most operating systems recognize and support a number of different protocols.
• This contributes to open system connectivity, since the network can then pass packets
with less concern for the protocols available on the network stations.
• In addition to standard communication protocol support, the operating system
commonly provides some or all of the services
• File services transfer programs and data files from one computer on the network to
another.
• Network file services require that identification of the network node occur ahead of the
file manager in the operating system hierarchy.
• This allows file requests to be directed to the appropriate file manager.
• Local requests are passed on to the local file manager
• Other requests go to the network for service by the file manager on the machine where
the file resides.
• Some file services require a logical name for the machine to be included on network file
requests.
• For example, Windows assigns pseudo drive letters to file systems accessible through
the network.
• To the user, a file ight reside o drive M:.
• Although this system is simple, it has one potential shortcoming
• Different computers on the network might access the same drive by different letters if
care ist take to prevet this situatio.
• This can make it difficult for users to find their network-based files when they move
between computers.
• Other systems allow the network administrator to assign names to each machine.
• Many Bentley University machines, for example, are named after Greek gods.
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