741. With fraction f parallelizable on P processors, speedup sp =:

Operating System • Parallel Performance • UGC NET Paper 2 Computer Science DEC 2012

742. Which feature characterizes a multiprogrammed OS?

Operating System • Process Management • UGC NET Paper 2 Computer Science DEC 2012

743. Number of extension boards (4 outlets each) for 58 lamps is

Operating System • Resource Allocation • UGC NET Paper 2 Computer Science DEC 2012

744. Match: (a) Critical region (b) Wait/signal (c) Working set (d) Deadlock — (1) Monitor (2) Mutex (3) Locality (4) Circular wait

Operating System • Synchronization • UGC NET Paper 2 Computer Science DEC 2012

745. In “thread is lightweight,” weight refers to

Operating System • Threads • UGC NET Paper 2 Computer Science DEC 2012

746. Which of these is NOT a UNIX shell?

Operating System • Command-Line Interfaces • UGC NET Paper 2 Computer Science DEC 2012

747. P1/P2 algorithm with S1=S2 using spin & swap achieves?

Operating System • Concurrency Control • UGC NET Paper 2 Computer Science DEC 2012

748. Disk SCAN from 345 toward 0, servicing 123, 874, 692, 475, 105, 376: total head movement?

Operating System • Disk Scheduling • UGC NET Paper 2 Computer Science DEC 2012

749. In Windows, “hibernate” means __.

Operating System • Power Management • UGC NET Paper 2 Computer Science DEC 2012

750. In round robin, as quantum increases average turnaround time

Operating System • CPU scheduling • UGC NET Paper 2 Computer Science DEC 2012

751. Resources allocated non-sharable basis is

Operating System • Deadlock conditions • UGC NET Paper 2 Computer Science DEC 2012

752. Which scheme deals with deadlock via timeouts?

Operating System • Deadlock Handling • UGC NET Paper 2 Computer Science DEC 2012

753. Instruction time i μs, page fault j μs every k instructions ⇒ effective time =:?

Operating System • Memory Management • UGC NET Paper 2 Computer Science DEC 2012

754. Which Windows OS is truly object-oriented, exposing kernel objects via methods?

Operating System • OS Design • UGC NET Paper 2 Computer Science DEC 2012

755. 70% parallelizable on 64 processors ⇒ speedup by Amdahl =:?

Operating System • Parallel Performance • UGC NET Paper 2 Computer Science DEC 2012

756. Granularity in parallel computing refers to the size of:?

Operating System • Parallelism Concepts • UGC NET Paper 2 Computer Science DEC 2012

757. When Unix process traps Ctrl-C, its signal handler runs in which mode?

Operating System • Signals • UGC NET Paper 2 Computer Science DEC 2012

758. Page trace … FIFO with 4 frames: % page faults =

Operating System • Virtual memory • UGC NET Paper 2 Computer Science DEC 2012

759. Preemptive scheduling suspends a running process

Operating System • • UGC NET Paper 2 Computer Science DEC 2012

760. Which methods control access in multithreaded programming ?

Operating System • Concurrency • UGC NET Paper 2 Computer Science DEC 2012