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PUNJAB TECHNICAL UNIVERSITY MCA - II (SEM 4) MAY 2008 : Operating Systems

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Roll No. .......................... Total No. of Questions : 13] [Total No. of Pages : 02 Paper ID [A0519] (Please fill this Paper ID in OMR Sheet) MCA (404) (S05) (O) (Sem. - 4th) OPERATING SYSTEMS Time : 03 Hours Maximum Marks : 75 Instruction to Candidates: 1) 2) Section - A is Compulsory. Attempt any Nine questions from Section - B. Section - A Q1) (15 2 = 30) a) What is multiprocessing? b) Describe two different techniques for handling the communications between a processor and devices. c) What is the essential difference between a block special file and a character special file? d) What is device independence? e) What is the difference between a physical address and a virtual address? f) What is a semaphore? g) What is the process of segmentation? h) What is an acrylic graph? i) What do you mean by thrashing? j) What are conditions for a deadlock to exist? k) What is Belady s anomaly? l) What is a remote procedure call? m) Describe conditions under which a kernel may perform dispatching without performing scheduling. n) What is the importance of disk scheduling? o) How does salting improve password security? D - 699 P.T.O.

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Additional Info : Mca - II (sem 4) May 2008 Question Paper - Operating Systems
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