20+ Interview Questions and Answers

Telecom operators should invest in robust network infrastructure and implement strict security measures to prevent problems.

• Invest in upgrading network infrastructure to handle increasing data traffic

• Implement strong security measures to protect against cyber threats

• Regularly monitor and analyze network performance to identify and address potential issues

• Provide reliable customer support to promptly address customer complaints and concerns

• Offer competitive pricing and attract...read more

Merging two CSV files with left join in Python.

• Read both CSV files using pandas.

• Perform left join using merge() function.

• Save the merged data to a new CSV file.

Call drops can be caused by various factors such as network congestion, poor signal strength, and technical issues.

• Network congestion due to high call volume or limited bandwidth

• Poor signal strength caused by distance from cell tower or obstacles

• Technical issues such as software glitches or hardware malfunctions

• Interference from other electronic devices

• Inadequate network coverage in certain areas

• User error such as accidentally hanging up or losing signal

• Weather conditions suc...read more

SAP MM is a module in SAP ERP that deals with procurement and inventory management.

• SAP MM stands for Material Management

• It includes processes like purchasing, inventory management, and invoice verification

• It helps in managing the complete procurement cycle from purchase requisition to payment

• It also includes functions like material planning, vendor evaluation, and contract management

• SAP MM integrates with other modules like SAP FI and SAP SD

Validation ensures the product meets the customer's requirements, while verification ensures the product is built correctly.

• Validation checks if the right product is being built, while verification checks if the product is being built right.

• Validation is subjective and involves evaluating the end product, while verification is objective and involves checking the product against specifications.

• Examples: Validating that a software application meets user requirements by conducti...read more

The 4Ps of marketing are Product, Price, Place, and Promotion.

• Product: Refers to the actual goods or services being offered to the target market.

• Price: The amount customers are willing to pay for the product or service.

• Place: The distribution channels used to make the product available to customers.

• Promotion: The marketing activities used to communicate the benefits of the product and persuade customers to buy.

Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.

• The series starts with 0 and 1, and the next number is the sum of the previous two numbers.

• The sequence goes like this: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ...

• The series is named after Leonardo Fibonacci, an Italian mathematician who introduced it to the Western world.

• The Fibonacci sequence has many applications in mathematics, science, and nature, such as in the growth ...read more

LOD functions are used in Tableau to aggregate data independently of the dimensions in the view.

• LOD functions allow for aggregating data at different levels of granularity than the view

• They can be used to calculate totals, averages, or other aggregations without affecting the view's dimensions

• Examples include {FIXED}, {INCLUDE}, and {EXCLUDE} LOD expressions

The amount of paint required to paint an airplane depends on the size and type of the aircraft.

• The amount of paint needed will vary based on the size of the airplane and whether it is a commercial or military aircraft.

• Factors such as the number of coats, type of paint, and design complexity will also impact the quantity of paint required.

• For example, a small private plane may require around 40-50 gallons of paint, while a large commercial jet could need hundreds of gallons.

• It...read more

OOP concepts are the fundamental principles of Object-Oriented Programming.

• Abstraction: Hiding implementation details and showing only necessary information.

• Encapsulation: Binding data and functions together in a single unit.

• Inheritance: Acquiring properties and behavior of a parent class by a child class.

• Polymorphism: Ability of an object to take many forms or have multiple behaviors.

• Examples: Java, C++, Python, Ruby, etc.

Left join, right join, and inner join are types of SQL joins used to combine data from two or more tables based on a related column between them.

• Left join: Returns all records from the left table and the matched records from the right table. If there is no match, NULL values are returned for the right table.

• Right join: Returns all records from the right table and the matched records from the left table. If there is no match, NULL values are returned for the left table.

• Inner j...read more

Data science helps Deloitte in various ways such as improving decision-making, identifying trends, and optimizing processes.

• Data science helps Deloitte in making informed decisions by analyzing large amounts of data.

• It helps in identifying trends and patterns in data, which can be used to improve business strategies.

• Data science also helps in optimizing processes by identifying inefficiencies and suggesting improvements.

• Deloitte uses data science in various industries such as...read more

Requirement gathering is the process of collecting and documenting requirements from stakeholders, while elicitation is the process of drawing out requirements from stakeholders.

• Requirement gathering involves collecting and documenting requirements from stakeholders.

• Elicitation involves drawing out requirements from stakeholders through interviews, workshops, and other techniques.

• Requirement gathering is more focused on documenting existing requirements, while elicitation is ...read more

LOD (Level of Detail) in Tableau is used to control the level of aggregation in visualizations.

• LOD expressions allow you to compute values at different levels of detail in a visualization.

• They can be used to create calculated fields that are independent of the visualization's level of detail.

• Examples of LOD expressions include FIXED, INCLUDE, and EXCLUDE.

• FIXED LOD expressions compute values using a specific dimension or set of dimensions.

• INCLUDE LOD expressions compute values...read more

Medical coding involves assigning specific codes to medical diagnoses, procedures, and services for billing and insurance purposes.

• Medical coding is essential for healthcare providers to receive proper reimbursement for services rendered.

• There are different code sets used in medical coding, such as ICD-10 for diagnoses and CPT/HCPCS for procedures.

• Accuracy in medical coding is crucial to prevent claim denials and ensure compliance with regulations.

• Certification in medical cod...read more

Nested queries/subqueries are queries within another query, allowing for more complex and specific data retrieval.

• Nested queries are enclosed within parentheses and can be used in SELECT, FROM, WHERE, and HAVING clauses.

• They can be used to filter results based on the output of another query, or to retrieve data from related tables.

• Nested queries can also be used to perform calculations or aggregate functions on the results of the outer query.

• Example: SELECT * FROM table1 WHER...read more

Accounting standards are guidelines and rules set by regulatory bodies to ensure consistency and transparency in financial reporting.

• Accounting standards dictate how financial transactions should be recorded, reported, and disclosed in financial statements.

• They help ensure that financial information is reliable, comparable, and relevant for decision-making.

• Examples of accounting standards include GAAP (Generally Accepted Accounting Principles) and IFRS (International Financia...read more

Yes, I have a few questions.

• Can you tell me more about the company culture?

• What are the main responsibilities of this role?

• Are there any ongoing projects I would be involved in?

• What is the typical career progression for a business analyst in this company?

I have experience in coding and have worked on various projects involving programming languages such as Java and Python.

• Proficient in Java and Python programming languages

• Developed a web application using Java and Spring framework

• Created a data analysis tool using Python and Pandas library

• Familiar with SQL and database management

• Collaborated with developers to integrate software components

Prioritisation techniques help in organizing tasks based on importance and urgency.

• MoSCoW method (Must have, Should have, Could have, Won't have)

• Eisenhower Matrix (Urgent vs Important)

• Weighted scoring model

• Kano model (Customer satisfaction vs functionality)

• Value vs Complexity matrix

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

• Allows for code reusability by creating a new class based on an existing class

• The new class (subclass) can access the attributes and methods of the existing class (superclass)

• Helps in creating a hierarchy of classes with shared characteristics

• Example: Class 'Car' can inherit from class 'Vehicle' to access common methods like 'startEngine' and 'stopEngine...read more