Saturday, September 22, 2012
Roll No. ......................
Total No. of Questions : 13] [Total No. of Pages : 02
Paper ID [A0309]
(Please fill this Paper ID in OMR Sheet)
B.Sc. IT - 301 (S05/New) (Sem. - 3rd)
COMPUTER SYSTEM ARCHITECTURE
Time : 03 Hours Maximum Marks : 75
Instruction to Candidates:
1) Section -A is Compulsory.
2) Attempt any Nine questions from Section - B.
Section - A<
(15 × 2 = 30)
a) What Babbage difference engine is capable to do.
b) List all general purpose registers.
c) What is handshaking? What problem it solves.
d) Write about the bus request & the bus grant.
e) Describe the function of priority encounter.
f) Why are read & write control lines in a DMA controller are bidirectional.
g) What is relation between word size & register size?
h) How Hardwired control works.
i) Describe the function of control logic gates.
j) What is the use of mode field in instruction format?
k) Describe infix expression with example.
l) Compare vectored & non-vectored interrupt.
m) Write the working of DMA controller.
n) How actually data is stored on magnetic tape.
o) Write the different methods of memory protection.
Section - B
(9 × 5 = 45)
Q2) Describe the purpose of different registers used in computer.
Q3) Differentiate between memory references instructions? Explain in detail.
Q4) Explain the timing signals used in control unit by diagram.
Q5) Discuss the Interrupts cycle using flow chart of Interrupt cycle.
Q6) How stack is organized. Explain its operations also.
Q7) Explain the different instruction formats used in CPU.
Q8) Explain all peripheral devices & write about each of them.
Q9) What is priority Interrupt? Differentiate between vectored & no-vectored
Q10) What is function of DMA controller? Show block diagram & explain.
Q11) Why hierarchical structure of memory is used? Show diagrammatically
Q12) Describe how data is stored on magnetic disk? Also list advantage &
disadvantage of it.
Q13) Explain the concept of writing data into cache memory?
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