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Cognizant Technology Solutions (CTS) is a US-based multinational company that deals in information technology, business consulting and outsourcing. Their motto is to build and implement technologies to keep their clients aware and responsive. It currently has 344400 employees worldwide. They recruit both freshers and those with work experience. If you are planning to have career with CTS, this article is for you. We have listed some of the frequently asked CTS python interview questions.
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Career Options for Python in CTS
Python is one of the most popular programming languages. In Python, the codes are more concise and helps create better designs. The language is easy and quick to learn. It helps create complex, multi-protocol applications with readable syntax. Python can be used for web development, software development, machine learning and artificial intelligence.
Python opens career opportunities that no other language can. Python developers are in great demand all around the world. Some of the career option for Python in CTS are:
- Data scientists
- Cyber security expert
- Software developer
- Data analysts
- Machine learning engineer
- Game developer
- Systems engineer
- Data engineer
- Full stack developer
- DevOps engineer
CTS Interview Process
1: Which of the following data types is immutable in Python?
Cognizant conducts both on campus and off-campus recruitment drives.
The recruitment is done for two profiles: GenC and GenC Elevate. GenC refers to freshers who have no previous work experience whereas GenC Elevate is the category for candidates having foundational knowledge in programing along with basic database concept.
There are three rounds in the CTS interview – aptitude, programming and HR. The aptitude round is a written test with a time limit.
The technical round involves technical discussion based on the resume. They will assess your knowledge of operating systems, how you come up with solutions etc. You should have a fundamental knowledge of recent technological developments and trends.
The HR round will be of basic personal questions and to know your communication skills. The interviewer may ask about your education, internship, previous work experience (if any).
Top CTS Python Interview Questions
While going for an interview, it is always better to be well prepared. You can have a word with your acquaintances who have attended interviews for similar posts or at CTS. This will help you get an idea of how to go about with your preparations. Here we have provided some of the python interview questions for you.
1. Why are linked lists better than arrays?
Linked lists are better than arrays in the following ways:
- For insertion and deletion, we only need to update the address present in the next pointer of a node.
- We do not have to provide an initial size during the time of creation since it can grow and shrink at runtime by allocating and deallocating memory.
- Since it is allocated during the runtime, no memory is wasted.
2. What is TCP/IP protocol?
TCP/IP protocol, also known as Transmission Control/Internet Protocol, is a set of communication protocols used to interconnect network devices on the internet.
3. What is the Hamming Code?
It is a set of error-correction codes that arise when data is transferred from one source to another. These codes can detect one-bit and two-bit errors and rectify one-bit errors without the detection of uncorrected errors.
4. What are pure virtual functions?
A pure virtual function is a function for which we only need to declare, not define.
5. How is a router different from a gateway?
A router connects multiple network segments and directs traffic in the network. It transfers data from source to destination in form of packets. It can send data between similar networks only. A gateway also regulates the network traffic but it can send data between two dissimilar networks.
6. Can a database table exist without a primary key?
Yes, a database table can exist without a primary key.
7. Write down a program to show the largest number among three numbers using binary minus operator.
package javaapplication9;
import java.util.Scanner;
public class JavaApplication9 {
public static void main(String[] args)
{
Scanner s = new Scanner(System.in);
int x = s.nextInt();
int y = s.nextInt();
int z = s.nextInt();
if(x-y>0 && x-z>0)
System.out.println(“Largest is a :-“+x);
else
if(y-z>0)
System.out.println(“\nLargest is y :-“+y);
else
System.out.println(“\nLargest is y :-“+z);
}
}
8. What is the difference between method overloading and method overriding?
Method Overloading is used to increase the readability of a program whereas method overriding provides specific implementation of the method that is already provided by super class.
9. What is Pass in Python?
In Python, pass statement is a null statement. It is used to delay the time of compilation.
10. What Is the Difference Between Del and Remove() on Lists?
The del function removes all elements of a list within a given range whereas remove() removes the first occurrence of a particular character.
11. Explain BCNF.
BCNF or Boycs Codd Normal Form, is an advanced version of 3nf form.
For a table to be in BCNF form it must fulfill the following properties:-
- should be in 3nf
- every functional dependency, A->B, must be a superkey
Knowledge of Python programming offers numerous career opportunities in CTS. A career as a python developer in CTS is both financially rewarding and fulfilling. With the right preparation, you will be able to embark on your dream career.
12. What is the use of break statement?
Break Statement is used to terminate a loop. When a break statement is encountered within a loop, the loop iterations stop and the control returns to the first statement after the loop.
13. What is the difference between SciPy and NumPy?
SciPy consists of all the numerical code. NumPy contains array data and basic operations such as sorting, indexing, etc.
14. How can you copy an object in Python?
To copy an object in Python, we use = operator. It creates a new variable that shares the reference of the original object.
15. Differentiate between pickling and unpickling?
Pickling, also known as serialization, converts a Python object hierarchy to a byte stream. On the other hand, unpickling, also known as deserialization, converts a byte stream to a Python object hierarchy.
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Frequently Asked Questions
Is Cognizant interview a tough one to crack?
If you have a strong technical knowledge, you will be able to get through the programming round easily.
How many rounds are there in CTS interview?
There are three rounds in the interview – aptitude, programming and HR.
Are coding questions asked in CTS interview?
Yes, coding questions are asked in CTS interview.
