# 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 1 Explanation:
 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 2 Explanation:
 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 3 Explanation:
 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 4 Explanation:
 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 5 Explanation:
 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 6 Explanation:
 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 7 Explanation:
 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 8 Explanation:
 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 9 Explanation:
 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
Question 10 Explanation:
There are 10 questions to complete.