Network administration defined

The chapter has several objectives: To give a brief history of the Internet; To give the definition of the two often-used terms in the discussion of the Internet: protocol and standard; To categorize standard organizations involved in the Internet and give a brief discussion of each; To define Internet Standards and explain the mechanism through which these standards are developed; to discuss the Internet administration and give a brief description of each branch.

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Users and Security Security domain The database administrator defines the names of the users who are allowed to access a database. A security domain defines the settings that apply to the user. Authentication mechanism A user who requires access to the database can be authenticated by one of the following: Data dictionary Operating system Network The means of authentication is specified at the time the user is defined in the database and can be altered later. This lesson covers authentication by database and by operating system only.

20p trinh02 28-01-2013 81 3   Download