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Multi Tasking Environment
Multi tasking exploits parallelism by:
1) Concurrently using the multiple functional units
2) Pipelining functional units are pipe line together
3) Overlapping CPU and I/O activities.
In multitasking environment, there should be a proper mix among task and data structures of a job, in order to make sure their proper parallel implementation.
In multitasking, the useful code of a programme can be use again. The property of allowing one copy of a programme module to be used by more than task in parallel is known as reentrancy. Non-reentrant code can be used only once throughout lifetime of the programme. The reentrant codes, which may be called many times by dissimilar tasks, are assigned with local variables.
There are two logical addressing :- a) Datalink is physical (hardware) addressing. b) Network is logical (software) addressing.
what is this ?
What is NVT (Network Virtual Terminal) It is a set of rules explaining a very simple virtual terminal interaction. The NVT is used in the begin of a Telnet session.
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