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

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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

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dnone of the mentioned

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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

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A heavy weight process ___________


ahas multiple threads of execution

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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

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bother threads that belong to similar processes

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cother threads that belong to the same process

✓


dall of the mentioned

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A thread is also called ___________


aLight Weight Process(LWP)

✓


bHeavy Weight Process(HWP)

✖


cProcess

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dNone of the mentioned

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


aother threads are strictly prohibited from running

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bother threads are allowed to run

✓


cother threads only from other processes are allowed to run

✖


dnone of the mentioned

✖



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