ISRO Technical Assistant computer Science Question Paper

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QUES 1. What is the name given to the first generation computer?
a) Binary language b)Machine language c)Assembly language
QUES 2.The root directory of a disk should be placed
a) at a fixed address in main memory
b) at a fixed location on disk
c) anywhere on disk.

QUES 3. A top down parser generates
a) right most derivation
b) left most derivation
c) right most derivation in reverse
d) left most derivation in reverse

QUES 4. What is the name of the OS that reads and reacts in terms of
actual time?
a)batch system
b)time sharing
c)real time

QUES 5. FDDI is a
a)ring network
b)star network
c)mesh network

QUES 6. Computer memory consists of
a)ROM
b)PROM
c)RAM
d)all the above

QUES 7.The minimum number of edges in a connected cyclic graph on
n vertices is
a) n-1 b) n c) n+1 d)none of these

QUES 8.A full binary tree with n non leaf nodes contains
a) n nodes b) log n nodes c)2n-1 nodes d)2n nodes
QUES 9. e time complexity of shell sort
a) O(n) b) O(log n) c) O(n ) d)O(n )

QUES 10. The time taken to insert an element after an element
pointed by some pointer
a) O(1) b) O(log n) c) O(n) d) O(nlogn)

QUES 11. What is the name given to the first generation computer?
a) Binary language b)Machine language c)Assembly language

QUES 12. The root directory of a disk should be placed
a) at a fixed address in main memory
b) at a fixed location on disk
c) anywhere on disk.

QUES 13. In Computer you know methods of sorting? Which is the
most efficient and why?

QUES 14. In Physics do you know what is the cause of hall effect?

QUES 15. In mechanical we have heard a lot about 100cc or 150 cc
bikes. What actually cc here means? Is there any relationship with
that with performance if so how and why?
Is there any 100% efficient Carnot cycle? Why?

QUES 16. In electrical we have heard a lot about transmission loss
why it is caused? Can we prevent it?

QUES 17. If sampling frequency doubles then
a) Quantization noise decreases
b) Quantization density decreases
c) Quantization noise increases
d) Quantization density increases

QUES 18. Two signals of 2GHz and 4GHz are frequency modulated on
same carrier 10 GHz. Find the ratio of frequency deviation if band
widths of both are equal.
a) 1:2 b)2:1 c) 1:1 d) 1:4

QUES 19. Gray code of 111 is

QUES 20. 3X512+7X64+5X8+3 then value in binary form contains
_______ number of 1?s.
a) 7 b) 6 c) 9 d) none

QUES 21. The 2?s compliment of decimal number 19 in 8-bit system is
a) 11101101

QUES 22. The high gain codes are
a) Turbo codes b) BCH codes c) R-S codes

QUES 23. BCH codes are of the type________
a) Convolutional type b) c)

QUES 24. Time constant of LC circuit is
a) L/R b) L/R2 c) RL