Organisations may obtain information either from an internal or an external source. Briefly describe any four sources of external information and any four sources of internally generated information. Elaborate on the nature of information required at each of the managerial levels. ​

Why should characters such as / \ " ' * ; - ? [ ] ( ) ~ ! $ { } < > # @ & | space, tab, and newline be avoided in file names?

Is an attack that relies on guessing the isns of tcp packets

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