Operating System Mcqs

Page No. 57

If the kernel is single threaded, then any user level thread performing a blocking system call will ___________


acause the entire process to run along with the other threads


bcause the thread to block with the other threads running


ccause the entire process to block even if the other threads are available to run


dnone of the mentioned



The kernel is _______ of user threads.


aa part of


bthe creator of


cunaware of


daware of


View Answer unaware of

Multithreading on a multi – CPU machine ___________


adecreases concurrency


bincreases concurrency


cdoesn’t affect the concurrency


dcan increase or decrease the concurrency


View Answer increases concurrency

Resource sharing helps ___________


ashare the memory and resources of the process to which the threads belong


ban application have several different threads of activity all within the same address space


creduce the address space that a process could potentially use


dall of the mentioned


View Answer all of the mentioned

Multithreading an interactive program will increase responsiveness to the user by ___________


acontinuing to run even if a part of it is blocked


bwaiting for one part to finish before the other begins


casking the user to decide the order of multithreading


dnone of the mentioned



A process having multiple threads of control implies ___________


ait can do more than one task at a time


bit can do only one task at a time, but much faster


cit has to use only one thread per process


dnone of the mentioned



A heavy weight process ___________


ahas multiple threads of execution


bhas a single thread of execution


ccan have multiple or a single thread for execution


dnone of the mentioned



A thread shares its resources(like data section, code section, open files, signals) with ___________


aother process similar to the one that the thread belongs to


bother threads that belong to similar processes


cother threads that belong to the same process


dall of the mentioned



A thread is also called ___________


aLight Weight Process(LWP)


bHeavy Weight Process(HWP)


cProcess


dNone of the mentioned



In the Many to Many models when a thread performs a blocking system call ___________


aother threads are strictly prohibited from running


bother threads are allowed to run


cother threads only from other processes are allowed to run


dnone of the mentioned



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