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CS501 Current Final Term Fall 2013 Shared by Sadia_Malik File 6



my today's ppr:
 gudluck :)
Parallel communication in data (2 marks)
Paging concept in memory and explain page size and page table: (5 marks)
DMA approach (3)
Tristate buffers.(2)
Direct mapping of cache memory (3)
Raid 0 when one drive fails. (2)
Represent some number  in sign magnitude form (3)
TCP/IP protocol (2)
Fragmentation.  (3)
10.  There are two important functions which should be built into I/O ports. Write name of them and explain by definition. (5)
Convert 0.2310 to base 2, write down all the steps involved in conversion. (5)
Calculate time to read 64 KB (128 sectors) for the following disk parameters. (5)
180 GB, 3.5 inch disk
12 platters, 24 surfaces
7,200 RPM; (4 ms avg. latency)
7 ms avg. seek (r/w)
64 to 35 MB/s (internal)
0.2 ms controller time

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