Saturday, April 16, 2011

ISRO : Scientist/Engineer - SC, 2011 Solved Question Paper

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Computer Science -2011
1. A context model of a software system can be shown by drawing a
a LEVEL-0 DFD
b LEVEL-1 DFD
c LEVEL-2 DFD
d LVEL-3 DFD
2.An example of poly-alphabetic substitution is
a P-box
b S-box
c Ceaser cipher
d Vigenere cipher
3. If node A has three siblings and B is parent of A, what is the degree of A?
a 0
b 3
c 4
d 5
4. The IEEE standard for WiMax technology is
a IEEE 802.16
b IEEE 802.36
c.IEEE 812.16
d IEEE 806.16
5. Which type of DBMS provides support for maintaining several versions of the same entity?
a Relational Data Base Management Systems
b Hierarchical
c Object Oriented Data base Management systems
d Network
6. A system is having 8 M bytes of video memory for bit- mapped graphics with 64-bit colour. What is the maximum resolution it can support?
a 800x 600
b 1024 x768
c 1280 x1024
d 1920 x1440
7.what is the meaning of RD signal in intel 8151A?
a  read(when it is low)
b read(when it is high)
c write(when it is low)
d read and write(when it is high)
8.If the page size in a 32 bit machine is 4K bytes then the size of page table is
a 1M bytes
b 2M bytes
c 4M bytes
d 4K bytes
9.A processor takes 12 cycles to complete an instruction 1.The corresponding pipelined processor uses 6 stages with the execution times of 3,2,5,4,6 and 2 cycles respectively.what is the asymptotic speedup assuming that a very large number speedup assuming that a very large number of instructions are to be executed?
a 1.83
b 2
c 3
d 6
10.The in order traversal of a tree resulted in FBGADCE.Then the pre order traversal of that tree would result in
a FGBDECA
b ABFGCDE
c BFGCDEA
d AFGBDEC
11.which one of the following is true
a R^S=(RUS)-[(R-S)U(S-R)]
b RUS=(R^S)-[(R-S)U(S-R)]
c R^S=(RUS)-[(R-S)^(S-R)]
d R^S=(RUS)U(R-S)
12.The above figure represents which one of the following UML diagram for a single send session of an online chat system.
a package diagram
b activity diagram
c class diagram
d sequence diagram
13.Which  'Normal Form' is based on the concept of 'full functional dependency' is
a first normal form
b second normal form
c third normal form
d fourth normal form
14.In boolean algebra,rule(X+Y)(X+Z)=
a Y+XZ
b X+YZ
c XY+Z
d XY+Y
15 How many 3 to 8 decorders with a chip having enable pin are needed to construct a 6 to 64 decorder without using any other logic gates?
a 7
b 8
c 9
d 10
16 In which layer of network architecture the secured socket layer (SSL) is used?
a physical layer
b session layer
c application layer
d presentation layer
17 What is the bit rate of a video terminal unit with 80 character/line,8 bits/character and horizontal sweep time of 100 muesecond(including 20 muesecond of retrace time)?
a 8 mbps
b 6.4 mbps
c 0.8 mbps
d 0.64 mbps
18 Black box software testing method focuses on the
a boundary condition of the software
b control structure of the software
c Functional Requirement of the Software
d Independent paths of Software
19. How many edges are there in a forest with v verticles and k components?
a (v+1) -k
b (v+1)/2 -k
c v-k
d v+k
20. If A and B are square matrices of the same order and A is symmetric, then BTAB is
a Skew symmetric
b Symmetric
Orthogonal
Idempotent
21 Find the memory address of the next instruction executed by the microprocessor (8086), when operated in real mode for CS  = 1000 and IP=E000
a 10E00
b 1E000
c F000
d 1000E
22. A fast wide SCS-II disk drive spines at 7200 RPM, has a sector size of 512 bytes, and holds 160 sectors per track. Estimate the sustained transfer rate of this drive.
a 576000 Kilobytes/sec
b 9600 Kilobytes/sec
c 4800 Kilobytes/sec
d 192000 Kilobytes/sec
23. Two control signals in microprocessorwhich are related to Direct Memory Access (DMA) are
a INTR & INTA
b RD & WR
c S0 &S1
d HOLD & HLDA
24. Consider the following pseudocode.
x:=1;
i:=1;
while (x<500)
begin  x:=2x;
i:=i+1;
end;
what is the value of i at the end of the pseudocode?
a 4
b 5
c 6
d 7
25 If the microcomputer operates at 5 MHz with an 8-bit bus and a newer version operates at 20 MHz with a 32- bit bus, the maximum speed -up possible approximately will be
a  2
b  4
c  8
d  16
26 The search concept used in associative memory is
a Parallel Search
b Sequential search
c Binary search
d Selection search
27 which variable does not drive a terminal string in the grammer
S-> AB
A->a
B->b
B->C

a  A
b  B
c  C
d  S


Tags: 2011 Solved Question Paper, ISRO : Scientist/Engineer - SC, ISRO answer keys, ISRO SC computer Science answer key, ISRO Solved paper 2011

13 comments:

  1. can u post the answer keys for the set A
    thanks..

    ReplyDelete
  2. kya mazak karte ho yaar...answer key kaha hai

    ReplyDelete
  3. there only 27 questions in ur isro paper but i had 80 questions

    ReplyDelete
  4. Chup be chutiyeee!!!!!

    ReplyDelete
  5. would u release answer key or not?

    i think u pepele making us fool ??????




    gk

    ReplyDelete
  6. Its too late now... plz provide the answer keys as early as possible....otherwise phir to result aa jayega and we don't need it

    ReplyDelete
  7. Nobody will provide answer keys. You all are become fool.

    ReplyDelete
  8. what the fuck????

    ReplyDelete
  9. Does anybody know when the isro results will be announced???????

    ReplyDelete
  10. u all are fucking each other by putting comment

    ReplyDelete
  11. Hey when r the results

    ReplyDelete
  12. Here is the result http://www.isro.org/pdf/ComputerScience.pdf

    ReplyDelete