Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech III COMPUTER ORGANIZATION AND OPERATING SYSTEMS Previous Question Paper (November/December - 2018 - R13)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
Discuss the basic functional units of a computer.
Answer
The basic functional units of a computer are the Input Unit (accepts data/instructions), Memory Unit (stores data and programs), Arithmetic Logic Unit (ALU) (performs computations), Control Unit (coordinates operations), and Output Unit (provides processed results).
Explain about arithmetic logic shift unit.
Answer
An Arithmetic Logic Shift Unit (ALSU) is a combinational circuit that performs arithmetic operations (addition, subtraction), logical operations (AND, OR, XOR, NOT), and shift operations (logical/arithmetic left or right shifts) on binary data. It uses a selection input to determine which operation to perform on the input operands.
What is Read-Only Memory? How is ROM differ from RAM?
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What is Address Sequencing? Discuss.
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Write down the features of RS232 protocol.
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Explain Priority Interrupt briefly.
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What are Distributed Systems? Give an example.
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What is paging? How it differs from segmentation?
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Define the terms – file, file path, directory.
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Explain any four common file attributes.
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Part B
What is an instruction code? Explain various addressing modes with examples.
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Explain about arithmetic micro operations, logic and shift micro operations by specifying examples.
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Define and discuss the differences between hardwired control unit and micro programmed control unit.
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Explain the following secondary storage devices:
Magnetic disk
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Magnetic tape
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What is the need of DMA? Explain in detail about Direct Memory Access.
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Explain about asynchronous data transfer modes and asynchronous communication interface.
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What is page fault? What is the need of page replacement algorithm? Explain in detail about any one Page-Replacement Algorithms.
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Define deadlock. What are the four necessary conditions for deadlock? Explain deadlock detection techniques.
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Describe file system structure with a neat diagram.
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Discuss in detail about file system mounting and file sharing with an example.
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