40+ Interview Questions and Answers

Key metrics for tracking growth in brick and mortar business.

• Sales revenue

• Customer footfall

• Average transaction value

• Customer retention rate

• Inventory turnover rate

• Gross profit margin

• Net promoter score

• Employee productivity

• Marketing ROI

KPIs are interrelated in a tree-like structure, with higher-level KPIs being influenced by lower-level ones.

• KPIs are Key Performance Indicators that measure the success of a business or project.

• KPIs can be organized in a tree-like structure, with higher-level KPIs being influenced by lower-level ones.

• For example, a company's overall revenue might be a high-level KPI, with lower-level KPIs such as sales revenue and customer retention influencing it.

• A KPI tree can help business...read more

Subquery is a query nested within another query, while CTE is a temporary result set defined within a query. Both have their own use cases.

• Subquery is enclosed in parentheses and can be used in SELECT, INSERT, UPDATE, or DELETE statements.

• CTE is defined using the WITH keyword and can be referenced multiple times in a query.

• CTEs are more readable and easier to maintain compared to subqueries.

• Subqueries are useful when the result set is needed only once, while CTEs are benefici...read more

Advertising a new store opening in a location

• Identify target audience and their preferences

• Create a catchy slogan and design attractive visuals

• Utilize social media platforms and local newspapers for promotion

• Offer discounts and promotions to attract customers

• Organize a grand opening event to create buzz and excitement

Pivoting a table in SQL using case when statements

• Use the CASE WHEN statement to create new columns based on specific conditions

• Use the SUM or COUNT function to aggregate data in the pivoted table

• Group by the remaining columns to ensure correct aggregation

• Example: SELECT id, SUM(CASE WHEN category = 'A' THEN value END) AS A_total FROM table_name GROUP BY id;

To control shrinkage in a retail store, implement strict inventory management, enhance security measures, and train employees on loss prevention.

• Implement strict inventory management practices such as regular stock counts and audits

• Enhance security measures by installing surveillance cameras, alarm systems, and anti-theft devices

• Train employees on loss prevention techniques like proper cash handling, identifying shoplifting behaviors, and reporting suspicious activities

Vlookup searches for a value in the first column of a range and returns a value in the same row from a specified column. Xlookup is a more powerful and flexible function that can search in any direction and return multiple results.

• Vlookup searches vertically in a table and returns a value from a specified column.

• Xlookup can search in any direction (horizontal, vertical, or both) and return multiple results.

• Vlookup requires the lookup value to be in the first column of the tab...read more

Logistic regression is a statistical method used to analyze and model the relationship between a binary dependent variable and one or more independent variables.

• It is a type of regression analysis used for predicting binary outcomes

• It uses a logistic function to model the probability of the dependent variable

• It is commonly used in fields such as healthcare, finance, and marketing

• Example: Predicting whether a customer will buy a product based on their age, income, and past pur...read more

Stay calm and try to understand the customer's issue. Use translation tools if necessary.

• Remain calm and professional

• Listen actively and try to understand the customer's issue

• Use translation tools if necessary

• Apologize for any inconvenience caused

• Offer a solution or escalate the issue to a higher authority if needed

There is no hard limit on the number of try-catch blocks, but excessive use can impact performance and readability.

• Try-catch blocks should be used sparingly and only when necessary

• Excessive use of try-catch blocks can impact performance

• Nested try-catch blocks can make code difficult to read and maintain

• Consider using alternative error handling mechanisms such as validation and defensive programming

• Use try-catch blocks to handle specific exceptions rather than catching all exc...read more

Build a pipeline to connect http source and bring data in adls

• Set up a data ingestion tool like Apache NiFi or Azure Data Factory to pull data from the http source

• Transform the data as needed using tools like Apache Spark or Azure Databricks

• Store the data in Azure Data Lake Storage (ADLS) for further processing and analysis

To open the cash counter, count the starting cash, verify the cash register, and unlock the cash drawer. To close, count the remaining cash, reconcile the sales, and secure the cash drawer.

• Count the starting cash to ensure it matches the expected amount

• Verify the cash register for any discrepancies or errors

• Unlock the cash drawer using the appropriate key or code

• Throughout the day, handle cash transactions and maintain accurate records

• Count the remaining cash at the end of th...read more

The total amount of plaster required for a corridor can be calculated by measuring the length, width, and height of the corridor and multiplying them together.

• Measure the length, width, and height of the corridor in meters

• Multiply the length, width, and height together to get the volume of the corridor

• Determine the coverage area of plaster per square meter

• Multiply the volume of the corridor by the coverage area to get the total amount of plaster required

SQL query on LeetCode platform for business analysis.

• Use SELECT statement to retrieve data from database tables.

• Use JOIN clause to combine data from multiple tables.

• Use WHERE clause to filter data based on specific conditions.

Consumers should consider parameters such as quality, safety, functionality, and price when choosing products.

• Quality: Consumers should look for products that meet their expectations and standards.

• Safety: Consumers should prioritize products that are safe to use and do not pose any health risks.

• Functionality: Consumers should consider how well the product performs its intended purpose.

• Price: Consumers should evaluate the cost of the product and determine if it aligns with the...read more

To handle customer requirements, it is important to actively listen, understand their needs, offer solutions, and provide excellent customer service.

• Actively listen to the customer to understand their specific requirements

• Ask clarifying questions to ensure a clear understanding of their needs

• Offer suitable solutions or alternatives based on their requirements

• Provide excellent customer service throughout the process

• Follow up with the customer to ensure their requirements are m...read more

Three statements are affected when buying inventory.

• Inventory account is increased

• Cost of goods sold account is increased

• Accounts payable account is increased

The department mix to the store refers to the distribution of different departments within the store. The private label mix to the department refers to the proportion of private label products within each department.

• The department mix to the store can vary depending on the type of store and its target market.

• For example, a grocery store may have departments such as produce, dairy, meat, bakery, and deli.

• The private label mix to each department indicates the percentage of prod...read more

To ensure customers buy, focus on understanding their needs, building trust, providing value, and offering solutions.

• Listen actively to understand customer needs and preferences

• Build trust through honesty, transparency, and reliability

• Highlight the benefits and value of the product or service

• Offer solutions that address the customer's specific pain points

• Provide excellent customer service and support post-purchase

To implement new software, we need to follow a structured process that includes planning, testing, and training.

• Identify the need for new software and its requirements

• Research and evaluate different software options

• Plan the implementation process, including timelines and resources

• Test the software thoroughly before deployment

• Train employees on how to use the new software

• Monitor and evaluate the software's performance regularly

Yes, I have participated in framework design.

• I have led a team in designing a custom framework for a web application.

• I have also contributed to the design of an open-source testing framework.

• My experience includes evaluating existing frameworks and proposing improvements.

• I prioritize flexibility, scalability, and ease of use in framework design.

I prefer using the Agile product management system for its flexibility and efficiency.

• Agile methodology allows for continuous improvement and adaptation to changing requirements

• It promotes collaboration between cross-functional teams

• Sprints help in breaking down tasks into manageable chunks for better efficiency

An E-Commerce system can be designed by identifying user requirements, selecting appropriate technologies, and implementing secure payment and shipping methods.

• Identify user requirements and create user stories

• Select appropriate technologies for front-end, back-end, and database

• Implement secure payment and shipping methods

• Design a user-friendly interface with easy navigation

• Ensure scalability and performance of the system

• Implement features like search, filters, and recommenda...read more

Use a self join to find employees with 2 managers in SQL query.

• Use a self join on the employee table to join the table with itself.

• Count the number of distinct managers for each employee.

• Filter the results to only include employees with 2 managers.

TestNG annotations are used to control the flow of test methods and configure test execution.

• Annotations are used to define pre- and post-test conditions

• Annotations include @Test, @BeforeSuite, @AfterSuite, @BeforeTest, @AfterTest, @BeforeClass, @AfterClass, @BeforeMethod, and @AfterMethod

• Annotations can be used to group tests, set priority, enable/disable tests, and specify data providers

I am proficient in Java, Python, and SQL.

• Java

• Python

• SQL

Visual Merchandising (VM) involves creating visually appealing displays to attract customers and promote products.

• VM involves designing and arranging displays in retail stores to showcase products effectively

• It includes elements like lighting, signage, color schemes, and product placement

• VM aims to create an engaging and memorable shopping experience for customers

• Examples of VM techniques include window displays, in-store displays, and product styling

KPI stands for Key Performance Indicator. It is a measurable value that demonstrates how effectively a company is achieving its key business objectives.

• KPIs are used to evaluate the success of an organization or of a particular activity in which it engages.

• They help to focus attention on what is important and to monitor progress towards strategic goals.

• Examples of KPIs include revenue growth, customer satisfaction, employee engagement, and website traffic.

• KPIs should be speci...read more

Elements can be handled through proper planning, organization, and communication.

• Create a plan for handling elements based on their priority and impact

• Organize resources and assign responsibilities to team members

• Communicate clearly and regularly with team members to ensure everyone is on the same page

• Monitor progress and adjust plans as necessary

• Examples: handling software elements in a development project, managing physical elements in a construction project

Colors play a crucial role in visual merchandising as they can evoke emotions, create moods, and influence consumer behavior.

• Colors can evoke different emotions and moods in customers

• They can influence consumer behavior and purchasing decisions

• Color psychology is important in visual merchandising to create the desired atmosphere

• Different cultures may have varying interpretations of colors

• Using a color wheel can help in creating visually appealing displays

My sspd stands for strong problem-solving and decision-making skills.

• I have a proven track record of analyzing complex situations and coming up with effective solutions.

• I am able to make quick and informed decisions under pressure.

• I excel at prioritizing tasks and managing time efficiently to meet deadlines.

Customers are individuals or organizations who purchase goods or services from a business.

• Customers are the lifeblood of any business

• They are the reason why businesses exist

• They have needs and wants that businesses aim to fulfill

• Customer satisfaction is crucial for business success

• Repeat customers are valuable assets for businesses

Dimension tables store descriptive attributes while fact tables store quantitative data.

• Dimension tables contain attributes that describe the business entities, such as customer, product, or time.

• Fact tables contain quantitative data or metrics that are typically numeric and additive, such as sales revenue or quantity sold.

• Dimension tables are denormalized and have a one-to-many relationship with fact tables.

• Fact tables are normalized and contain foreign keys to link to dimen...read more

An architecture for an ecommerce application involves multiple components like front-end, back-end, database, and payment gateway.

• Separate front-end and back-end for scalability and maintainability

• Use microservices architecture for flexibility and scalability

• Implement a robust database system for storing product information, user data, and transactions

• Integrate a secure payment gateway for processing payments

• Utilize caching mechanisms for improved performance

Using Set and spread operator to get unique elements in an array.

• Create a Set from the array using Set constructor

• Use spread operator to convert Set back to array

• Alternatively, use Array.from() method to convert Set to array

Inward outward in paper refers to the process of receiving and sending documents or items through physical or digital means.

• Inward refers to receiving documents or items, such as packages or letters, into the organization.

• Outward refers to sending documents or items out of the organization to external parties.

• Paper can refer to physical documents or digital files that are being received or sent.

• Proper documentation and tracking of inward and outward items is essential for rec...read more

ITIL best practices are essential for efficient IT operations.

• ITIL provides a framework for IT service management.

• ITIL best practices include incident management, problem management, change management, and service level management.

• ITIL helps to improve service quality, reduce costs, and increase customer satisfaction.

• ITIL also emphasizes continuous improvement and the importance of communication and collaboration within IT teams.

• Examples of ITIL tools include ServiceNow, BMC ...read more

Yes, I have experience in multiple departments.

• I have worked in the procurement department where I was responsible for purchasing and maintaining inventory levels.

• I have also worked in the sales department where I was responsible for forecasting demand and ensuring adequate stock levels.

• In addition, I have worked in the logistics department where I was responsible for coordinating shipments and ensuring timely delivery.

• My experience in multiple departments has given me a well...read more

To improve processes and inputs, it is important to analyze current practices, gather feedback, implement changes, and monitor results.

• Conduct a thorough analysis of existing processes and identify areas for improvement.

• Seek feedback from stakeholders, including team members, customers, and suppliers.

• Implement changes based on the analysis and feedback received.

• Monitor the results of the implemented changes and make further adjustments if necessary.