Q. In which of the following, ready to execute processes must be present in RAM?

View solution

Q. If the executing program size is greater than the existing RAM of a computer, it is still possible to execute the program if the OS supports:

View solution

Q. Files that are related to input/output and are used to model serial I/O devices such as terminals, printers and networks are called :

View solution

Q. An example of a possible file attribute is:

View solution

Q. An example of a non-preemptive CPU scheduling algorithm is:

View solution

Q. There are ‘n’ processes in memory. A process spends a fraction ‘p’ of its time waiting for I/O to complete. The CPU utilization is given by:

View solution

Q. With 64 bit virtual addresses, a 4KB page and 256 MB of RAM, an inverted page table requires:

View solution

Q. A computer has 6 tape drives with ‘n’ processes competing for them. Each process may need two drives. For which values of ‘n’ is the system deadlock free ?

View solution

Q. A program has five virtual pages, numbered from 0 to 4. If the pages are referenced in the order 012301401234, with three page frames, the total number of page faults with FIFO will be equal to:

View solution

Q. Average process size=s bytes. Each page entry requires e bytes. The optimum page size is given by:

View solution

Q. The aging algorithm with a=0.5 is used to predict run times. The previous four runs from oldest to most recent are 40, 20, 20 and 15 msec. The prediction for the next time will be:

View solution

Q. Moving process from main memory to disk is called:

View solution

Q. Part of a program where the shared memory is accessed and which should be executed indivisibly, is called:

View solution

Q. Windows is a .................. operating system.

View solution

Q. Which page replacement policy suffers from Belady’s anomaly?

View solution

Q. Cache memory is:

View solution

Q. ....................is one of pre-emptive scheduling algorithm.

View solution

Q. A software to create a Job Queue is called...................

View solution

Q. In processor management, round robin method essentially uses the preemptive version of ...................

View solution

Q. A page fault ..................

View solution