Himachal Pradesh University (HPU) 2008-5th Sem B.Tech Computer Science and Engineering Iester - exam paper

B.Tech. IVth Semester exam
System Software(2008)
(EC/CSE)
Note: Attempt 5 ques. in all, selecting 1 every from parts A,B,C and D. part E is compulsory.

Section-A
1.(a) The IEEE format for single precision 32 bit number is shown below:-
eight bit 23 bit
S Excess 127 Mantissa
Exponent
The S stands for sign.
(i) What is the range of floating point number?
(ii) What is the representation for floating point zero
(b) What do you understand by privileged instructions of machine? provide an example for the identical.
(c) What do you understand by stack addressing mode? elaborate its advantages? [6+7+7]

2. Write a program in ‘C ’ language to add 1st 10 integers. What is the role of pointers? [20]

Section-B
3. (a) Draw the flowchart for pass 1 pass 2 of assembler and define it. [20]
4. (a) What is the difference ranging from positional argument and keyword argument in a macro call?
(b) How and when is the content of ALA updated?
(c) How does a macro call within a macro expand? define it with an example. [5+5+10]

Section-C

5. (a) What is the need of transfer vector in a loader?
(b) define the structure and usage of Relocation and Linkage directory.
(c) What do you understand by
(i) Dynamic loading.
(ii) Overlaying? [6+7+7]

6. (a) What is the relationship ranging from GEST, ESD and RLd? provide an example to demonstrate the relation.
(b)What is the difference ranging from binding and linking? [14+6]


Section- D

7. (a) Differentiate ranging from Hardware and Software interrupts. explain the structure of interrupt vector table.
(b) What do you understand by BIOS? discuss. [10+10]

8. Write short notes on
(a) Memory resident programs.
(b) Interrupt calls from C. [10+10]



Section- E

9. Fill in the blanks:
(i) Intel Pentium is ____________ bit machine.
(ii) Instruction of the stack machine has _______________ operators.
(iii) PC/IP contains the address of ______________ instructions.
(iv) The relocation bit __________ support for relocation.
(v) In a paged memory system binding is done at the time of ____________ the program.
(vi) Page has _________ size.
(vii) Sub-routines and a routine are ___________.
(viii) ALA is used by ___________.
(ix) The transfer vector ____________ object code length.
(x) The overlay structure can be employed in dynamic loading only for ____________ subroutines.
[2*10=20]

Earning:   Approval pending.