20+ Crazy Holidays Interview Questions and Answers

Black box testing focuses on testing the functionality of a software without knowing its internal code, while white box testing involves testing the internal code structure.

• Black box testing is based on external expectations and specifications

• White box testing is based on internal code structure and logic

• Black box testing is also known as functional testing

• White box testing is also known as structural testing

• Example: In black box testing, a tester tests a login page without k...read more

Manual testing is the process of manually testing software for defects, errors, and bugs.

• Manual testing involves testers executing test cases without the use of automation tools.

• Testers follow predefined test cases to ensure the software functions correctly.

• Manual testing is time-consuming but allows for human intuition and creativity in finding bugs.

• Examples of manual testing include exploratory testing, ad-hoc testing, and regression testing.

Defect cascading is when a defect in one part of the software causes defects in other parts.

• Occurs when a defect in one module goes undetected and affects other modules

• Can lead to a chain reaction of defects throughout the software

• Often results from poor testing practices or lack of communication among team members

Defect seeding is the intentional introduction of defects into a software system to evaluate the effectiveness of testing processes.

• Defect seeding helps in identifying weaknesses in the testing process

• Common techniques include adding bugs to the codebase or injecting faults into the system

• It is used to measure the thoroughness and efficiency of testing

Defect life cycle is the process of identifying, reporting, fixing, retesting, and closing software bugs.

• Defect identification: Bugs are found during testing or by users.

• Defect reporting: Bugs are documented in a bug tracking system.

• Defect fixing: Developers address and resolve the reported bugs.

• Defect retesting: Testers verify that the bug is fixed.

• Defect closing: Once verified, the bug is marked as closed.

QA stands for Quality Assurance and involves the process of ensuring quality in software development. QC stands for Quality Control and involves the process of verifying quality in the final product.

• QA focuses on preventing defects in the software development process

• QC focuses on identifying defects in the final product

• QA involves processes like code reviews, unit testing, and continuous integration

• QC involves processes like testing, debugging, and validation

• Example: QA ensur...read more

Inheritance is a mechanism in object-oriented programming where a class can inherit properties and methods from another class.

• Inheritance allows for code reuse and promotes code organization.

• The class that is being inherited from is called the parent or base class.

• The class that inherits from the parent class is called the child or derived class.

• The child class can access all the public and protected members of the parent class.

• Example: A class Animal can be the parent class ...read more

Severity and priority are used to classify the importance and urgency of issues in software development.

• Severity refers to the impact of an issue on the system or business.

• Priority refers to the urgency of fixing an issue.

• Severity is usually categorized as low, medium, or high.

• Priority is usually categorized as low, medium, or high.

• For example, a critical bug that causes the system to crash would have high severity and high priority.

Use a sorting algorithm to find the kth element in a string array.

• Sort the array of strings using a sorting algorithm like quicksort or mergesort.

• Return the kth element from the sorted array.

Writing test cases for software engineer position

• Test case for login functionality: verify valid credentials login successfully, verify invalid credentials show error message

• Test case for search functionality: verify search results display correctly, verify no results message shown for invalid search

• Test case for checkout process: verify items added to cart correctly, verify payment process completes successfully

The angle between the hour hand and minute hand at 12:20 is 10 degrees.

• Calculate the angle made by the hour hand from 12 o'clock position: (20/60)*30 = 10 degrees

• Calculate the angle made by the minute hand from 12 o'clock position: (20/60)*360 = 120 degrees

• Find the difference between the two angles: 120 - 10 = 110 degrees

Used ACID properties in a banking application to ensure data consistency and reliability.

• Implemented transactions to ensure atomicity of operations

• Utilized isolation levels to prevent concurrent access issues

• Used locking mechanisms to maintain data consistency

• Ensured durability of data by committing changes to disk

Find the first missing number in an array of strings.

• Convert the array of strings to an array of integers.

• Sort the array of integers.

• Iterate through the sorted array to find the first missing number.

Java is a popular programming language used for developing various applications.

• Class is a blueprint for creating objects, which are instances of classes.

• Abstraction is the concept of hiding implementation details and showing only necessary features.

• Inheritance allows a class to inherit properties and behavior from another class.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Method overloading is having multiple methods in the...read more

Pandas is a Python library used for data manipulation and analysis, including creating and working with dataframes.

• Import the pandas library: import pandas as pd

• Create a dataframe: df = pd.DataFrame(data)

• Accessing data in a dataframe: df['column_name']

• Filtering data in a dataframe: df[df['column_name'] > value]

• Adding a new column: df['new_column'] = values

Find the first non-repeating element in a string

• Create a frequency map of characters in the string

• Iterate through the string and check the frequency of each character

• Return the first character with frequency 1

A leaf node in a binary tree is a node that does not have any children.

• Traverse the binary tree and check if a node has no left or right child, then it is a leaf node.

• Example: In the binary tree 1 -> 2, 3 -> 4, 5, 6 -> 7, 8, the leaf nodes are 4, 5, 7, 8.

Check if a linked list contains a loop by using Floyd's cycle detection algorithm.

• Use two pointers, one moving at twice the speed of the other

• If there is a loop, the two pointers will eventually meet

• Example: 1->2->3->4->5->2 (loop at 2)

Oops stands for Object-Oriented Programming. Inheritance is a mechanism in which a new class inherits properties and behaviors from an existing class.

• Oops stands for Object-Oriented Programming

• Inheritance allows a new class to inherit properties and behaviors from an existing class

• Inheritance promotes code reusability and helps in creating a hierarchical relationship between classes

ng-content is used in Angular to project content into a component's template.

• ng-content is used to pass content into a component from the outside.

• It allows for dynamic content insertion within a component's template.

• ng-content is often used in combination with ng-template and ng-container.

• It is commonly used for creating reusable components with varying content.

Sprint ceremonies are meetings held during a sprint to facilitate communication and collaboration within the team.

• Sprint planning: where the team plans the work to be done in the upcoming sprint

• Daily stand-up: a brief meeting where team members share progress and discuss any obstacles

• Sprint review: a meeting where the team demonstrates the work completed during the sprint

• Sprint retrospective: a meeting where the team reflects on the sprint and identifies areas for improvement

VMware Workstation is a desktop virtualization software that allows users to run multiple operating systems on a single physical machine.

• Allows users to create and run virtual machines on their desktop or laptop

• Supports a wide range of operating systems including Windows, Linux, and macOS

• Provides features like snapshots, virtual networking, and shared folders

• Used for software development, testing, and IT administration tasks

TCP (Transmission Control Protocol) is a connection-oriented protocol that provides reliable and ordered delivery of data packets.

• TCP is one of the main protocols in the Internet protocol suite.

• It operates at the transport layer of the OSI model.

• TCP ensures that data packets are delivered in order and without errors.

• It establishes a connection between two devices before data transfer begins.

• Examples of applications that use TCP include web browsing, email, and file transfer.

Manual QA involves testing software applications manually to ensure they meet quality standards.

• Manual testing is done by human testers without the use of automation tools.

• Testers follow test cases and execute them to identify bugs and defects.

• Manual QA involves exploratory testing to uncover issues that automated tests may miss.

• Testers document their findings and communicate with developers to resolve issues.

• Examples include regression testing, usability testing, and ad-hoc ...read more

Create an API endpoint to update employee details.

• Use PUT method to update employee details

• Validate input data before updating

• Return success message or error message accordingly