Os paper

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Os paper

  1. 1. CCEE GUESS PAPER FOR OS MODULE (SOLVED) A. Mutual-exclusion when n jobs Q1- The removal of process from active contention of CPU and sharing a resource reintroduce them into B. Multiple clients and servers accomplishing a computation memory later is known as… C. The need for synchronization in systems where many processes share a resource A. Interrupt B. Swapping C. Signal D. None of the above D. Multiprogramming Q2- The Purpose of Cooperating processes is … Q5- In multithreaded programs, the kernel informs an application about certain events A. Information Sharing using a procedure known as …… . B. Convenience A. Signal C. Computation Speed-Up B. Upcall D. All of the above C. Event handler D. Pool Q3The Multiprogramming by… degree of is controlled A. CPU scheduler B. Context switching C. Long-term scheduler D. Medium-term scheduler Q4The producer-consumer problem refers to: Q6- LWPis… A. placed between system and kernel threads. B. placed between user and kernel threads. C. common in systems implementing one-to-one multithreading models. D. none of the above.
  2. 2. CCEE GUESS PAPER FOR OS MODULE (SOLVED) Q9- Thread-specific datais data Q7CPU burst distribution is that… generally characterized as A. is not associated with any process. A. constant B. linear C. polynomial D. exponential exponential or hyper- Q8The primary difference between user-level threads and kernel threads is … A. User level threads do not use OS services via system calls, where kernel threads require system calls . B. User level threads are independent of each other, whereas kernel threads can write into each other’s memory space . C. User level threads require memory management where kernel threads do not . D. None of the above. B. has been modified by the thread but not yet updatedto the parent process. C. is generated by the thread independent of the thread's process . D. is copied and not shared with the parent process. Q10- The purpose of dual modeof operation is to… A. Protect the OS from user programs. B. Protect the user programs from an OS. C. Protect one program from another user program. D. Protect the computer hardware.

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