11

Which phenomenon causes a phase shift in the retardation plates??

a Polaroid filters
b Double refraction
c Phasor plates
d Retardation plates
Correct: (B) Double refraction
12

What are the best-case and worst-case complexity of selection sort??

a O(n)
b O(nlogn)
c O(n^2)
d O(logn)
Correct: (C) O(n^2)
13

________ is the handover from a satellite network to a terrestrial cellular network.?

a Gateway handover
b Inter satellite handover
c Inter system handover
d Intra satellite handover
Correct: (C) Inter system handover
14

Which of the following is NOT an element of Database??

a Schema
b Relationships
c Constraints
d Frontend
Correct: (D) Frontend
15

___________is used for management, maintenance and retrieval of the data stored in the database.?

a Operating System
b Database Management System
c System Software
d Processing Software
Correct: (B) Database Management System
16

The value of the attributes in a database describe a particular _________?

a Entity
b Tuple
c Field
d View
Correct: (A) Entity
17

If a relation schema is in 2NF, then it is definitely in:?

a 1NF
b 4NF
c 3NF
d BCNF
Correct: (A) 1NF
18

Which of the following symbol is used with SELECT command of SQL, to retrieve all the attribute values of the selected tuples??

a #
b %
c *
d :
Correct: (C) *
19

Match the following with respect to ER diagram: List-1 I Boxes Il Ovals III. Diamonds List-2 P Attributes Q. Relationships R. Entities?

a I-Q, II-P, III-R
b I-P, II-R, III-Q
c I-R, II-Q, III-P
d I-R, II-P, III-Q
Correct: (D) I-R, II-P, III-Q
20

Which of the following is NOT a part of Data Definition Language in Relational Database Management System??

a Create Table
b Insert Table
c Alter Table
d Drop Table
Correct: (B) Insert Table