Looking for the answer to the question below related to Operating System?

A light weight process (LWP) is supported by a single kernel space thread, and it in turn supports several user space threads, belonging to a single user task. Which statement is true?

 Options:

(I) The user task is made to be multithreaded in order to make it more efficient.
(II) Only kernel space threads can utilize multiple CPU’s power.
(III) If a user space thread blocks due to an I/O operation, the whole user task blocks.
(IV) Kernel space threads have higher context switching overhead than user space threads.

(a) (I), (II) and (IV) are only true
(b) (I), (II) and (III) are only true
(c) None is true
(d) All are true
(e) (I) and (IV) are only true.

The Correct Answer Is:

• (a) (I), (II) and (IV) are only true

Conclusion

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