CGI Group Interview Questions, Process, and Tips

Q1. What is difference between tuple and list and where did you used it in your project?
Ans. 
Tuple is immutable and ordered, while list is mutable and ordered. Tuples are used for fixed data, lists for dynamic data.
• Tuple is created using parentheses (), while list is created using square brackets []

• Tuples are immutable, meaning their elements cannot be changed once defined, while lists are mutable and can be modified

• Tuples are typically used for fixed data that will not change, while lists are used for dynamic...read more
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Q2. What is difference Between monothic and microservices
Ans. 
Monolithic architecture is a single unified unit while microservices architecture is composed of small, independent services.
• Monolithic architecture is a single, indivisible unit where all components are tightly coupled.

• Microservices architecture breaks down the application into smaller, independent services that communicate with each other through APIs.

• Monolithic applications are easier to develop and deploy but can b...read more
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Q3. Write a code to find second largest number without using built functions and write one test case for that function
Ans. 
Code to find second largest number in an array without using built-in functions
• Iterate through the array to find the largest number

• Keep track of the largest number and update it if a larger number is found

• Once the largest number is found, iterate again to find the second largest number
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Q4. What are mixins in django?
Ans. 
Mixins in Django are a way to reuse code across multiple classes by providing methods and attributes that can be inherited.
• Mixins are classes that provide methods and attributes to be inherited by other classes.

• They are used to add common functionality to multiple classes without repeating code.

• Mixins are not meant to be instantiated on their own, but rather to be inherited by other classes.

• An example of a mixin in Dja...read more
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Q5. What is difference between django and flask?
Ans. 
Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design. Flask is a lightweight WSGI web application framework.
• Django is a full-featured framework with built-in ORM, admin panel, and authentication system, while Flask is more lightweight and flexible.

• Django follows the 'batteries included' philosophy, providing many built-in features out of the box, whereas Flask is mor...read more
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Q6. What are different kind of testing frameworks in django?
Ans. 
Different testing frameworks in Django include Django's built-in test framework, pytest, and unittest.
• Django's built-in test framework: Provides tools for testing Django applications and is easy to use.

• pytest: A popular testing framework that offers more features and flexibility compared to Django's built-in test framework.

• unittest: A standard Python testing framework that can also be used for testing Django applicatio
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Q7. What are different AWS services used in your project?
Ans. 
We use AWS services like EC2, S3, RDS, Lambda, and CloudWatch in our project.
• EC2 - for hosting our application servers

• S3 - for storing and serving static assets

• RDS - for managing our relational database

• Lambda - for serverless computing

• CloudWatch - for monitoring and logging
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Q8. What is decorator in python?
Ans. 
Decorator in Python is a design pattern that allows adding new functionality to an existing object without modifying its structure.
• Decorators are functions that modify the behavior of other functions or methods.

• They are denoted by @decorator_name above the function definition.

• Decorators can be used for logging, timing, authentication, etc.

• Example: @staticmethod, @classmethod, @property
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Q9. Write a simple django code to render hello world template
Ans. 
Django code to render hello world template
• Create a new Django project

• Create a new Django app within the project

• Create a template file with 'hello world' content

• Update views.py to render the template

• Update urls.py to map a URL to the view
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Average to easy difficulty level.

Q1. Java code of string manipulation
Ans. 
String manipulation in Java involves various methods like substring, concat, replace, etc.
• Use substring() to extract a part of the string

• Use concat() to concatenate two strings

• Use replace() to replace a specific character or substring in a string
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Q2. What is the Java code for various types of sorting algorithms?
Ans. 
Various sorting algorithms in Java code
• Bubble Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Selection Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Insertion Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Merge Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);

• Quick Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);
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Q3. Sql query and topics related to joins.
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Q1. About yourself and family
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Q2. What do you know about the company?
Ans. 
The company is a leading software development firm specializing in creating innovative solutions for various industries.
• Specializes in creating innovative software solutions

• Works with clients from various industries

• Known for high-quality and reliable products

• Has a strong team of software engineers and developers
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Q3. Can you provide examples of real-life scenarios where you handled conflicts with either a colleague or a manager?
Ans. 
Handled conflicts by addressing issues directly, seeking compromise, and maintaining professionalism.
• Addressed a disagreement with a colleague by scheduling a one-on-one meeting to discuss concerns and find common ground.

• Resolved a conflict with a manager by actively listening to their perspective, providing feedback, and working together to find a solution.

• Maintained professionalism during conflicts by staying calm, r...read more
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Q4. What actions would you take if your manager does not approve your product idea, and how would you attempt to persuade them?
Ans. 
I would gather more data to support my idea, present a compelling case to my manager, and be open to feedback and compromise.
• Gather data to support the idea, such as market research, user feedback, or cost-benefit analysis.

• Prepare a well-structured presentation highlighting the potential benefits of the product idea.

• Listen to the manager's concerns and feedback, and be open to making adjustments or compromises.

• Seek sup...read more
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Q1. What changes should be made to both the backend and frontend when a new field is added in order to ensure that data flows from the backend to the user interface (UI) in the Model-View-Controller (MVC) arch...read more
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Q2. Could you describe the types of SQL query questions you were asked during the interview, including scenarios involving join operations with two tables and the expected outputs, as well as your experience w...read more
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Q3. There are two technical rounds 1st round is around 45 mins and second round is face to face that is too technical around one and half an hour. Third round also happened at a day with manager
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Q1. Parameter and argument difference in JavaScript ? 2. Closures and hoisting in Javascript ? 3. Var, let and Const difference ?
Ans. 
Understanding JavaScript concepts like parameters, closures, and variable declarations is crucial for effective coding.
• Parameters are variables listed as part of a function's definition, while arguments are the actual values passed to the function.

• Example: function add(a, b) { return a + b; } - 'a' and 'b' are parameters; add(2, 3) - '2' and '3' are arguments.

• Closures are functions that remember their lexical scope eve...read more
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Q2. Should create a simple form with name, email, mobile and if we click the submit button the added details has to show on the below table
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