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Consider the following statements about user level threads and kernel level threads :
Which one of the following statements if false?
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- Context switch time is longer for kernel level threads than for user level threads
- User level threads do not need any hardware support
- Related kernel level threads can be scheduled on different processors in a multi-processor system
- Blocking one kernel level thread blocks all related threads
- Context switch time is longer for kernel level threads than for user level threads
Correct Option: D
Blocking one kernel level threads does not block all related threads. In kernel level threads, in blocking system call, it can happen with the kernel that another thread is scheduled while kernel is executing.
