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Cognizant System Software Engineer Interview Questions, Process, and Tips

Updated 17 Dec 2020

Top Cognizant System Software Engineer Interview Questions and Answers

View all 12 questions

Cognizant System Software Engineer Interview Experiences

2 interviews found

I applied via Campus Placement and was interviewed in Nov 2020. There were 3 interview rounds.

Interview Questionnaire 

12 Questions

  • Q1. What is slew rate?
  • Ans. 

    Slew rate is the rate at which an electrical signal changes over time.

    • Slew rate measures how quickly the voltage of a signal can change.

    • It is typically expressed in volts per microsecond (V/μs).

    • A high slew rate indicates a signal can change rapidly, while a low slew rate indicates a slower change.

    • Slew rate is important in applications where fast signal transitions are required, such as in amplifiers or digital circuits

  • Answered by AI
  • Q2. What is oscillator?
  • Ans. 

    An oscillator is an electronic circuit that produces a periodic, oscillating electronic signal.

    • Oscillators are used in many electronic devices, such as radios, televisions, and computers.

    • They are also used in clocks, watches, and other timekeeping devices.

    • There are many different types of oscillators, including crystal oscillators, LC oscillators, and RC oscillators.

    • Oscillators can produce signals at a wide range of fr...

  • Answered by AI
  • Q3. What is gain?
  • Ans. 

    Gain is the increase in signal power or amplitude produced by an amplifier or other electronic device.

    • Gain is a measure of amplification.

    • It is the ratio of output power to input power.

    • It can be expressed in decibels (dB).

    • For example, if an amplifier has a gain of 10, it will increase the input signal by a factor of 10.

    • Gain is an important parameter in designing and analyzing electronic circuits.

  • Answered by AI
  • Q4. What is flip-flop?
  • Ans. 

    A flip-flop is a digital circuit that can store a single bit of information.

    • It has two stable states: 0 and 1.

    • It can be used to store data, count pulses, and synchronize digital circuits.

    • Examples include D flip-flop, JK flip-flop, and T flip-flop.

  • Answered by AI
  • Q5. What is gsm?
  • Ans. 

    GSM stands for Global System for Mobile Communications, a standard for mobile communication networks.

    • GSM is a digital cellular network technology used for voice and data communication.

    • It was first introduced in 1991 and is now widely used in over 200 countries.

    • GSM uses a SIM card to identify and authenticate users on the network.

    • It operates on different frequency bands depending on the region.

    • GSM has been largely repla...

  • Answered by AI
  • Q6. What is hamming distance?
  • Ans. 

    Hamming distance is the number of positions at which the corresponding symbols are different between two strings of equal length.

    • Hamming distance is used in coding theory, information theory, and cryptography.

    • It is also used in DNA analysis to measure the genetic distance between two sequences.

    • For example, the Hamming distance between '10101' and '11100' is 2.

    • It can be calculated by comparing each symbol in the two str...

  • Answered by AI
  • Q7. What is resonance?
  • Ans. 

    Resonance is the phenomenon of an object vibrating at its natural frequency due to the influence of an external force.

    • Resonance occurs when an object is subjected to an external force that matches its natural frequency.

    • This causes the object to vibrate with increasing amplitude.

    • Examples of resonance include a tuning fork vibrating when struck, a wine glass shattering due to a high-pitched sound, and a bridge collapsing...

  • Answered by AI
  • Q8. What is digital communication?
  • Ans. 

    Digital communication is the transmission of information through digital signals.

    • Digital communication uses binary code to represent data.

    • It can be done through various mediums such as wires, fiber optics, or wireless signals.

    • Examples include email, text messaging, and video conferencing.

    • Digital communication allows for faster and more efficient transmission of information compared to analog communication.

  • Answered by AI
  • Q9. Write a program to reverse a string?
  • Ans. 

    Program to reverse a string

    • Create an empty string to store the reversed string

    • Iterate through the original string from end to start

    • Append each character to the new string

    • Return the reversed string

  • Answered by AI
  • Q10. Write a program to print name?
  • Ans. 

    A program to print name using an array of strings.

    • Declare an array of strings with the name.

    • Assign the name to the array.

    • Loop through the array and print each string.

  • Answered by AI
  • Q11. Tell me more about your rescue team?
  • Q12. Aptitude questions on ratio and proportion,mixture and allegation, Simple interest and common interest.

Interview Preparation Tips

Interview preparation tips for other job seekers - My interview went 1 hr and 15 min long.
for the first 45 min it was like question answer round. the interviewer asked questions about all subjects in ENTC Engg. but as i have done diploma and also have a good knowledge of all subjects in ENCT Engg. also asked me to solve some aptitude questions so it went good.
after that he asked me about my participation in social activities and also about my family background. and then gave feedback in which he told me to keep that always learning attitude constant even after graduation.
you need to stay calm, honest and confident and you can easily ace the interview if you that potential of holding a strong knowledge of the field you are studying in.
i thought they will ask about IT subjects but surprisingly they asked about the field i was studying in.

Skills evaluated in this interview

I applied via Campus Placement and was interviewed in Nov 2020. There were 4 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. About C language , java
  • Q2. What is pointer ? What is array ? One dimenisonal array , two dimensional array ?
  • Ans. 

    A pointer is a variable that stores the memory address of another variable. An array is a collection of similar data types.

    • Pointers are used to manipulate memory and create dynamic data structures.

    • Arrays can be one-dimensional or multi-dimensional, and are accessed using index values.

    • One-dimensional arrays are like a list of items, while two-dimensional arrays are like a table with rows and columns.

    • Example: int *ptr; i...

  • Answered by AI
  • Q3. What is object ? What is class ?
  • Ans. 

    An object is an instance of a class. A class is a blueprint for creating objects.

    • An object is a data structure that contains data and methods.

    • A class is a template or blueprint for creating objects.

    • Objects are created from classes using the 'new' keyword.

    • Classes define the properties and behaviors of objects.

    • Inheritance allows classes to inherit properties and behaviors from other classes.

    • Polymorphism allows objects to

  • Answered by AI
  • Q4. Three aptitude questions regarding simple interest , discounts , directions

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and be genuine . These two are the most important thing you have to show up to your recuriter. You have to be skilled enough. You should be able to communicate with recuriter in english . Always tend to be in learning mode . Be calm and confident that makes you crack the interview .

Skills evaluated in this interview

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Q5. What is memory loss or when we will use static keyword

Interview questions from similar companies

I applied via Walk-in and was interviewed before Dec 2020. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. Basic Programming questions.
  • Q2. Fibonacci program
  • Q3. OOPS concepts.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare basic OOPS concepts and basic programs.

I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Oops Concepts and Data Structure Questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Oops And Data Structure, Collection.

I applied via Campus Placement and was interviewed before Feb 2020. There were 6 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Was interviewed as fresher?
  • Q2. Written test conducted? with verbal ability test ? GD
  • Q3. How would u deal with a problematic situation when you are working in a team?
  • Q4. What are your plans about higher studies?

Interview Preparation Tips

Interview preparation tips for other job seekers - it was basic with apptiude test and attitiude test.

Interview Questionnaire 

2 Questions

  • Q1. They asked me on java and I have joined as a fresher they not much questions as I got selected as fresher on oops concepts and collections
  • Q2. Please be confident while facing interview and they will check your communication skills

I applied via Company Website and was interviewed before Feb 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. They asked about dbms questions in the form of table formate
  • Q2. They asked code for some python program

Interview Preparation Tips

Interview preparation tips for other job seekers - Firstly they conducted computer based technical exam and then after qualifying that then we will go for face face interview and then lastly HR round will be held.

I applied via Campus Placement and was interviewed in Oct 2020. There were 4 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Wap of bubble sort
  • Ans. 

    Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

    • Start from the first element and compare it with the next element

    • If the next element is smaller, swap them

    • Repeat this process for all elements in the array

    • Continue this process until no more swaps are needed

  • Answered by AI
  • Q2. Wap of prime number
  • Ans. 

    A program to print all prime numbers

    • Take input from user for range of numbers

    • Loop through the range and check if each number is prime

    • Print the prime numbers

  • Answered by AI
  • Q3. What is hashmap?
  • Ans. 

    Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.

    • Hashmap uses a hash function to map keys to indices in an array.

    • Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

    • Examples of hashmap implementations include Java's HashMap class and Python's dict type.

  • Answered by AI
  • Q4. What is inheritance
  • Ans. 

    Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

    • Inheritance allows code reuse and promotes code organization.

    • The existing class is called the parent or superclass, and the new class is called the child or subclass.

    • The child class inherits all the properties and methods of the parent class and can also add new properties and methods.

    • For...

  • Answered by AI
  • Q5. Call by value and call by reference

Interview Preparation Tips

Interview preparation tips for other job seekers - Be yourself

Skills evaluated in this interview

I applied via Walk-in and was interviewed in Mar 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Introduction your self in interview

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview should be very easy and comfortable to the students. And be confident at the infront of interviewer
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Dec 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Basic logical reasoning and verbal questions . Easy to clear

Round 2 - HR 

(2 Questions)

  • Q1. 1.Tell me about yourself? 2.What are Your achievements?
  • Q2. 3. Your strengths? 4. How did you face a situation using your key skills?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Confident . Care to explain more instead of giving single word answers . Good luck
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Cognizant Interview FAQs

What are the top questions asked in Cognizant System Software Engineer interview?

Some of the top questions asked at the Cognizant System Software Engineer interview -

  1. What is pointer ? What is array ? One dimenisonal array , two dimensional array...read more
  2. What is object ? What is class...read more
  3. write a program to reverse a stri...read more

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