most cisco ios flavors use a flat memory space which means that the current processes have access to all allocated memory at any given time... this allows for a loose and fast process allocation per requesting process...
junos, conversely, uses protected memory resources which means that specific memory is reserved for use by specific processes at any given time...
the argument can be made for advantages in both models; the flat memory model is arguably faster while the protected memory model disallows process corruption vis a vis, one process cannot subsume the others memory area; it is protected...
ios is non preemptive multitasking which means that the process gives back the resources when the process decides to, with some limits...
in ios, a process can be in one of 5 self-evident states, determined by the scheduler...
New— The process has just been created and has no resources. It has never been scheduled to run.
Ready— The process is ready to run and should be scheduled on the processor the next time it is eligible.
Run— The process is currently running.
Idle— The process is waiting for some event to become ready to run.
Dead— The process is dead; it is being cleaned up.
network cisco ccna gns3 certification arteq
a network runs through it
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