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hcl_placement_papers - Visit www.123eng.com for latest Jobs...

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Visit www.123eng.com for latest Jobs Chat with other engineers at www.123eng.com/forum Get latest Fresher / Experienced Engineering Jobs at www.123eng.com For More Placement Papers visit www.123eng.com Page 1 of 207 Sample Test Paper 1. Which of the following involves context switch, (a) system call (b) priviliged instruction (c) floating poitnt exception (d) all the above (e) none of the above Ans: (a) 2. In OST, terminal emulation is done in 3. For a 25MHz processor , what is the time taken by the instruction which needs 3 clock cycles, (a)120 nano secs (b)120 micro secs (c)75 nano secs (d)75 micro secs 4. For 1 MB memory, the number of address lines required, 5. Semaphore is used for
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