GeeksforGeeks Question · May 2024

Cognizant Interview Experience

Data Science OA Easy

Question Details

Round 1 Aptitude TestMy Experience:The first round was an online aptitude test that lasted for about 90 minutes. It was divided into three sections: Quantitative Aptitude...

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Round 1 Aptitude Test My Experience: The first round was an online aptitude test that lasted for about 90 minutes. It was divided into three sections: Quantitative Aptitude, Logical Reasoning, and Verbal Ability. The Quantitative section included questions on topics like algebra, percentages, time and work, and probability. The Logical Reasoning section featured puzzles, series completion, and data interpretation questions. The Verbal Ability section consisted of grammar, vocabulary, sentence correction, and reading comprehension. Preparation: I prepared using the Quantitative Aptitude book by R.S. Aggarwal and practised with online mock tests. Time management was crucial, so I focused on practising questions to improve my speed and accuracy.

Round 2 Technical Test My Experience: The second round was a technical test that primarily included coding questions. I was asked to write code in C and Java. The test also covered data structures such as arrays, linked lists, and sorting algorithms, as well as some basic SQL queries. Preparation: I practised coding on platforms like GeeksforGeeks and LeetCode. I also reviewed data structures and algorithms through YouTube tutorials and books. Additionally, I brushed up on my SQL knowledge by practising queries.

Round 3 Technical Interview My Experience: The technical interview involved in-depth questions about the projects listed on my resume. The interviewer asked me to explain the technologies used, my role, and the challenges I faced. I was also given a coding problem to solve on the spot and asked questions about databases, operating systems, and networking concepts. Preparation: I thoroughly revised my projects and prepared to discuss them in detail. I practised solving coding problems on HackerRank and CodeChef and reviewed concepts of operating systems and networking.

Round 4 HR Interview My Experience: The HR interview was friendly and conversational. I was asked to introduce myself, discuss my career aspirations, and explain why I wanted to join Cognizant. The HR manager also asked situational questions, such as how I would handle a difficult team member. Preparation: I researched Cognizant’s history, mission, and recent projects. I practised answers to common HR questions and thought about my long-term career goals and how they aligned with the company. General Tips: Dress Professionally: Wear formal attire to make a good impression. Be Punctual: Arrive or join the interview on time. Communicate Clearly: Articulate your thoughts clearly and confidently. Ask Questions: Show your interest by asking insightful questions at the end of the interview.

Follow-up: Send a thank-you email after the interview to express your appreciation.

About This Question

This is a reported interview question from a cognizant interview for a data science role during the oa round reported in 2024.

It covers the following topics: Arrays, Linked List, Sorting, Sql, Probability Stats, Os .

Difficulty rating: Easy