Sunday, December 27, 2015

SYSTEMS PROGRAMMING,T.E. (Computer) (Semester – II),University Of Pune Question Paper,2010 Question Paper

University Of Pune Question Paper
T.E. (Computer) (Semester – II) Examination, 2010
(2003 Course)
Time : 3 Hours Max. Marks : 100
 Instructions : 1) Answer any 3 questions from each Section.
2) Answers to the two Sections should be written in separate
3) Neat diagrams must be drawn wherever necessary.
4) Figures to the right indicate full marks.
5) Assume suitable data, if necessary.
1. a) What is language processor ? Explain various language processing tools. 8
b) With respect to the two pass assembler, which of the pass is responsible for
the following activities
i) Object code generation
ii) Entry of literals into the literal table
iii) Invalid mnemonic check
iv) Address resolution of local symbols 4
c) Define :
i) Assembler
ii) Macro 2
d) Match the following : 4
i) Macro definition table a) Switch
ii) Macro name table b) Macro call
iii) Argument list array c) MDT index
iv) Macro definition level counter d) Index marker
2. a) Comment on the statement : “Programs with macros require more space at
 run time than program with functions”. 4
b) Name the feature of macro that forces us to use stack. Explain in brief with the
help of an example. 4
c) What feature of assembler makes it mandatory to design a two pass assembler ?
Explain with the help of an example. 6
d) Comment on the following statements :
i) In certain cases Assembly language programming holds an edge over high
level language programming.
ii) “Macros can not detect instructional errors i.e. errors in op-codes”. 4
3. a) What do you mean by overlay structure ? Discuss advantages of the same. 4
b) Explain compile-and-go loader scheme. What are its advantages and
disadvantages ? 8
c) Compare .EXE and .DLL file. 4
4. a) Explain design of MS-DOS linker. 8
b) What information must be provided by an assembler to the direct linking
loader ? Explain significance of this information with respect to design of
direct linking loader. 8
5. a) Write an algorithm for lexical analyzer. 8
b) Explain how to eliminate problem of left recursion and left factoring in top
 down parsing. 8
6. a) For the following program write output of Lexical analyzer. Show contents of
all the tables. (in-built and generated)
main( )
int a, b, c, d;
} 8
b) Explain Recursive descent parser with an example. 8
7. a) Compare multi-programming and time-sharing systems. 4
b) With the help of an example explain priority scheduling. What is starvation ?
How to overcome this problem ? 8
c) For the following set of processes calculate average turn around time using
FCFS scheduling. Also draw Gantt chart.
Process Arrival time Burst time
P1 0.000 3
P2 1.001 6
P3 4.001 4
P4 6.001 2
8. a) For the following set of processes calculate average waiting time using
preemptive shortest job first scheduling. Also draw Gantt chart.
Process Arrival time Burst time
P1 0 8
P2 1 4
P3 2 9
P4 3 5
b) Describe the difference between short term, medium term and long term
scheduling. 8
9. a) Explain the need of demand paging. 8
b) What do you mean by compaction ? Explain with example. 8
c) What is page fault ? 2
10. a) Compare following :
i) Internal and external fermentation
ii) Logical and physical address 8
b) For the following reference string how many page faults will occur using LRU
and optimal page replacement scheme. Compare the results. 10
1, 2, 3, 4, 5, 3, 4, 1, 6, 7, 8, 7, 8, 9, 7, 8, 9, 5, 4, 5, 4, 2
11.a) What are different file access methods ? Briefly discuss. 8
b) Suppose that a disk drive has 5000 cylinders, numbered 0 to 4999. The drive
is currently serving a request at cylinder 143. The queue of pending requests
in FIFO is :
86, 1470, 913, 1774, 948, 1509, 1022, 1750, 130
Starting from the current head position what is the total distance that the disk
arm moves to satisfy all the pending requests for FCFS and SSTF disk
scheduling algorithm. 8
12. a) Compare linked and indexed allocation with example. 8
b) With example explain various free space management techniques. 8
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