JNTU
JNTU B.Tech III COMPUTER ORGANIZATION AND OPERATING SYSTEM Previous Question Paper (May - 2019 - R16)
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. Each question carries 10 marks.
Part A
What is the different general purpose registers involved in the typical computer system?
Answer
General purpose registers include the Accumulator (AC), Data Register (DR), Address Register (AR), Program Counter (PC), Memory Data Register (MDR), and General Purpose Registers (R0-Rn) used for temporary data storage during arithmetic and logical operations.
Define (r -1)’s complement and r’s complement.
Answer
The (r-1)'s complement of an n-digit number N in base r is defined as (rn - 1) - N. The r's complement is defined as rn - N, which is equivalent to adding 1 to the (r-1)'s complement.
What is Memory Interleaving?
Answer
Sign in to view the complete answer paper.
What are the special features of Direct RDRAMs?
Answer
Sign in to view the complete answer paper.
What is PCI Bus?
Answer
Sign in to view the complete answer paper.
What are the objectives of IEEE1394?
Answer
Sign in to view the complete answer paper.
Differentiate protection and security.
Answer
Sign in to view the complete answer paper.
List out the services provided by OS.
Answer
Sign in to view the complete answer paper.
What is ‘a file’? Mention some file attributes.
Answer
Sign in to view the complete answer paper.
What is the file system structure in OS?
Answer
Sign in to view the complete answer paper.
Part B
Give the major characteristics of RISC and CISC architectures.
Answer
Sign in to view the complete answer paper.
Explain 3 steps of a processor to perform execute instruction.
Answer
Sign in to view the complete answer paper.
Represent the number (+95.4)10 as a floating-point binary number with 24 bits? The normalized fraction mantissa has 16 bits and the exponent has 8 bits?
Answer
Sign in to view the complete answer paper.
What are the basic differences among a branch instruction, a call subroutine instruction, and program interrupt?
Answer
Sign in to view the complete answer paper.
Compare paging and segmentation mechanisms for implementing the virtual memory.
Answer
Sign in to view the complete answer paper.
What is hard wired and microprogrammed control?
Answer
Sign in to view the complete answer paper.
Discuss the different mapping techniques used in cache memories and their relative merits and demerits.
Answer
Sign in to view the complete answer paper.
What is RAID and how does it work? Why is RAID used?
Answer
Sign in to view the complete answer paper.
What are the functions of typical I/O interface?
Answer
Sign in to view the complete answer paper.
Explain with the block diagram the DMA transfer in a computer System.
Answer
Sign in to view the complete answer paper.
Describe in detail about IOP organization.
Answer
Sign in to view the complete answer paper.
What are interrupts? How are they handled?
Answer
Sign in to view the complete answer paper.
Explain in detail about the paging scheme.
Answer
Sign in to view the complete answer paper.
What is the cause of thrashing? How does system detects thrashing? Once it detects thrashing, what can the system do to eliminate this problem?
Answer
Sign in to view the complete answer paper.
What are the four necessary conditions that must be satisfied simultaneously in a system for the deadlock to occur? How to detect and avoid deadlock?
Answer
Sign in to view the complete answer paper.
What are ‘Directories’? What are the operations that can be performed on the directories? Explain Directory structures.
Answer
Sign in to view the complete answer paper.
What are different file access methods? Explain.
Answer
Sign in to view the complete answer paper.
Explain in detail about file allocation methods.
Answer
Sign in to view the complete answer paper.
Consider a system where free space is kept in a free-space list. Suppose that the pointer to the free space list is lost. Can the system reconstruct the free-space list? Explain your answer?
Answer
Sign in to view the complete answer paper.