ISRO CSE 2017

Question 1
If A is a skew symmetric matrix then A^{t} is
A
Diagonal matrix
B
A
C
0
D
-A
Engineering Mathematics   Linear Algebra
Question 2
Let A and B be any two arbitrary events, then, which one of the following is TRUE?
A
P(A \cap B)=P(A) P(B)
B
P(A \cup B)=P(A)+P(B)
C
P(A \mid B)=P(A \cap B) P(B)
D
P(A \cup B) \leq P(A)+P(B)
Discrete Mathematics   Probability Theory
Question 3
Using Newton-Raphson method, a root correct to 3 decimal places of x^{3}-3 x-5=0
A
2.222
B
2.275
C
2.279
D
None of the above
Engineering Mathematics   Numerical Method
Question 4
What does a data dictionary will identify?
A
Field name
B
Field format
C
Field types
D
All of the above
Database Management System   Relational Schema
Question 5
Which of the following concurrency control protocol ensures both conflict and free from deadlock? ,
A
Time stamp ordering
B
2 Phase locking
C
Both (A) and (B)
D
None of the above
Database Management System   Transaction
Question 6
ACID properties of a transactions are
A
Atomicity, consistency, isolation, database
B
Atomicity, consistency, isolation, durability
C
Atomicity, consistency, integrity, durability
D
Atomicity, consistency, integrity, database
Database Management System   Transaction
Question 7
\begin{array}{|l|l|l|l|l|} \hline \textbf{Employee} & \textbf{Department} & \textbf{OT allowance} \\ \hline \text{RAMA} & \text{Mechanical} & \text{5000} \\\hline \text{GOPI} & \text{Electrical} & \text{2000} \\\hline \text{SINDHU} & \text{Computer} & \text{4000} \\\hline \text{MAHESH} & \text{Civil} & \text{1500} \\\hline \end{array}
What is the output of the following SQL query?
 select count(*) from 
    ((select Employee, Department from Overtime_allowance) 
    natural join 
    (select Department, OT_allowance from Overtime_allowance) 
    as T);
A
16
B
4
C
8
D
None of the above
Database Management System   SQL
Question 8
Which symbol denote derived attributes in ER Model?
A
Double ellipse
B
Dashed ellipse
C
Squared ellipse
D
Ellipse with attribute name underlined
Database Management System   ER Model
Question 9
The symmetric difference of sets A={1,2,3,4,5,6,7,8} and B={1,3,5,6,7,8,9} is:
A
{1,3,5,6,7,8}
B
{2,4,9}
C
{2,4}
D
{1,2,3,4,5,6,7,8,9}
Discrete Mathematics   Set Theory
Question 10
The problem 3-SAT and 2-SAT are
A
both in P
B
both NP complete
C
NP -complete and in P respectively
D
undecidable and NP complete respectively
Algorithm   P-NP Theory
There are 10 questions to complete.

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