Cognizant interview experience Real time questions & tips from candidates to crack your interview

Data Scientist

Cognizant
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2 rounds | 5 Coding problems

Interview preparation journey

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Preparation
Duration: 4 months
Topics: Data Structure, Alogrithms, Java/c++/Python,reasoning, bit manipulation, oops,Database(mysql)
Tip
Tip

Tip 1 : 2 project is must
Tip 2 : Practice dsa on GeeksforGeeks(atleast 100)
Tip 3 : Communicate well(Practice the Communication)

Application process
Where: Campus
Eligibility: 6 CGPA
Resume Tip
Resume tip

Tip 1 : don't put like 2 or 3 programming language unnecessarily 
Tip 2 : make your summary strong

Interview rounds

01
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date16 Sep 2021
Coding problem3

1. DBMS Question

Find out the rank of Employee whose department is OBIEE and Name is rohan?

Problem approach

Tip 1: practice the sql questions on hacker rank
Tip 2: Read the question slow and clearly
Tip 3: Take time to understand the question

2. DBMS Question

How to get 3 Highest salaries records from Employee table?

Problem approach

Tip 1: practice the sql questions on hackerrank
Tip 2:read the question slow and clearly
Tip 3:take time to understand the question

3. All Prime Numbers less than or equal to N

Moderate
10m average time
90% success
0/80
Asked in companies
OptumAdobeTata Consultancy Services (TCS)

You are given a positive integer 'N'. Your task is to return all the prime numbers less than or equal to the 'N'.

Note:

1) A prime number is a number that has only two factors: 1 and the number itself.

2) 1 is not a prime number.
Problem approach

.It should be great than 1 so check the number is greater than 1
. Check number is divisible 2 or 3 so in this we neglect all even number or number divisible by 3 ,9,12....
. Then run a for loop from i =5 ;in%i or n%i+2
. So by this we neglect the number which is divisible by 5 or 7 .

Try solving now
02
Round
Easy
HR Round
Duration20 minutes
Interview date26 Sep 2022
Coding problem2

Timing was morning . Environment was good interviewer was very supportive .

1. Basic HR Question

Tell me about your self ?

Problem approach

Tip 1: Prepare the vocal and communication 
Tip 2: Be confident
Tip 3:Don't be fake in the interview

2. Basic HR Question

Where do you see yourself after 5 years?

Problem approach

Tip 1: Prepare the vocal and communication 
Tip 2: Be confident
Tip 3:Don't be fake in the interview

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

Skill covered: Programming

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