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CA IPCC : Question Paper (with Answers) - INFORMATION TECHNOLOGY & STRATEGIC MANAGEMENT Nov 2010

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CA IPCC
Tilak Vidyalaya Higher Secondary School (TVHSS), Kallidaikurichi
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PAPER 7 : INFORMATION TECHNOLOGY AND STRATEGIC MANAGEMENT SECTION A : INFORMATION TECHNOLOGY Question No. 1 is compulsory. Answer any Five questions from the rest. Question 1. Answer all the following questions in brief: (a) What is importance of Address bus on a mother board? (b) Explain the difference between Static RAM and Dynamic RAM . (c) What do you mean by Partitioned Database ? (d) Describe the functions of layers in TCP/IP protocol. (e) What is the difference between Off-line and Real time Data Warehouse? (5x2=10 Marks) Answer (a) Address Bus: The address bus is a set of wires on the mother board that connects the CPU and RAM and carries the addresses of the memory locations where data can be retrieved or stored. Number of parallel wires in the address bus determines the maximum number of memory locations the CPU can address. For example, a 32 bit address bus can address upto 4 GB of memory locations. (b) Static RAM: Static RAM is lot faster, larger and more expensive than Dynamic RAM. It does not need to be continually refreshed. The data remained stored in it as long as power remains on. Because of its speed, SRAM is used mainly in a special area of memory called cache. Dynamic RAM:Dynamic RAM is most common type of main memory. It is dynamic because each memory cell quickly loses its charge so it must be refreshed hundreds of times each second to prevent data from being lost. The power consumption by DRAM is less than that of a SRAM. The most Dynamic RAM in use is Rambus DRAM. (c) Partitioned Database:It is a type of distributed database where processing of application programs and data can be performed at more than one site. In a partitioned data base, the data base is divided into parts or segments that are appropriate for respective sites so that only those segments are distributed without costly replication of the entire data. (d) TCP/IP Protocol Layers: TCP/IP protocol suit has four layers and each layer performs specific function so that packet can be moved to next layer in TCP/IP protocol suit. These layers are given below: (i) Application layer: It provides services directly to the user such as email. The Institute of Chartered Accountants of India

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