Mode switch among threads
Tell reasons why a Mode switch among threads may be cheaper than a Mode switch among processes?
Expert
1. Reason – the control blocks for processes are bigger than for threads (store more state information), therefore the amount of information to move throughout the thread switching is less than for process context switching
2. Reason – the main reason is that the memory management is simpler for threads than for processes. Threads share their memory so throughout mode switching, memory information ought not to be exchanged/changed, pages & page tables do not have to be switched, etc. It makes the thread context switch much cheaper than for processes. In particular case of processes the memory pieces (pages) require to be exchanged, etc.
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Explain the four Stages of information system life cycle in brief ?
Greedy Best-First Search: It uses a heuristic that attempts to predict how close the end of a path is to the goal state, so that paths which are judged to be closer to the state are explored first.
Exact Abstraction: An abstraction is exact (with respect to a property or a class of properties) if there is no loss of information due to abstraction. Exact abstractions are strongly property preserving. Under-approximations can be strongly preservin
describe the functions of the secondary lymphoid organ
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