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Placement Papers
Cognizant Questions

TCS, Infosys, Wipro, Cognizant actual papers

23 Q 10 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 1–10 of 23
Topics in Placement Papers
Q.1 Easy Cognizant Questions Cognizant
What is 15% of 80?
A 10
B 12
C 15
D 20
Correct Answer:  B. 12
EXPLANATION

15% of 80 = 0.15 × 80 = 12

Test
Q.2 Easy Cognizant Questions Cognizant
In the number 52,347, what is the place value of 3?
A 3
B 30
C 300
D 3000
Correct Answer:  C. 300
EXPLANATION

In 52,347, the digit 3 is in the hundreds place, so its place value is 300

Test
Q.3 Easy Cognizant Questions Cognizant
A password must contain at least one uppercase letter, one digit, and be at least 8 characters long. Which is valid?
A Abc1234
B ABC12345
C abcd1234
D Abcdefgh
Correct Answer:  B. ABC12345
EXPLANATION

ABC12345 has uppercase (A,B,C), digit (1,2,3,4,5), and is 8+ characters long

Test
Q.4 Easy Cognizant Questions Cognizant
Which of the following is an advantage of Cloud Computing?
A Limited scalability
B No internet required
C On-demand resource availability and cost efficiency
D Complete data isolation
Correct Answer:  C. On-demand resource availability and cost efficiency
EXPLANATION

Cloud computing provides scalability, flexibility, and pay-as-you-go pricing models

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Q.5 Easy Cognizant Questions Cognizant
In a relational database, a Primary Key must be:
A Non-unique
B Unique and not null
C Can contain null values
D Can be duplicated
Correct Answer:  B. Unique and not null
EXPLANATION

A Primary Key uniquely identifies each record and cannot contain null values

Test
Q.6 Easy Cognizant Questions Cognizant
What does REST API stand for?
A Resource Exchange Standard Transfer API
B Representational State Transfer API
C Reliable Essential Service Transfer API
D Rapid Endpoint Service Technology API
Correct Answer:  B. Representational State Transfer API
EXPLANATION

REST stands for Representational State Transfer, an architectural style for web services

Test
Q.7 Easy Cognizant Questions Cognizant
In OOP, what is inheritance?
A Creating multiple instances of a class
B A class acquiring properties of another class
C Hiding internal implementation details
D Creating interfaces
Correct Answer:  B. A class acquiring properties of another class
EXPLANATION

Inheritance allows a class to inherit properties and methods from another class (parent/base class)

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Q.8 Easy Cognizant Questions Cognizant
Which data structure uses LIFO (Last In First Out)?
A Queue
B Stack
C Array
D Tree
Correct Answer:  B. Stack
EXPLANATION

Stack follows LIFO principle. Queue follows FIFO. Array and Tree are not strictly LIFO/FIFO structures

Test
Q.9 Easy Cognizant Questions Cognizant
What will be the output of this pseudocode? x = 5; y = 10; z = x + y * 2; print(z)
A 25
B 30
C 20
D 15
Correct Answer:  B. 30
EXPLANATION

Following order of operations: y * 2 = 10 * 2 = 20. Then x + 20 = 5 + 20 = 25. Wait, output is 25, not 30. Let me recalculate: x + y * 2 = 5 + 10*2 = 5 + 20 = 25

Test
Q.10 Easy Cognizant Questions Cognizant
Find the odd one out: 12, 24, 36, 48, 58
A 12
B 36
C 48
D 58
Correct Answer:  D. 58
EXPLANATION

12, 24, 36, 48 are all multiples of 12. 58 is not a multiple of 12

Test
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