40+ Interview Questions and Answers

To restrict a class from being inherited, mark it as final.

• Use the final keyword before the class declaration.

• Final classes cannot be subclassed.

• Any attempt to subclass a final class will result in a compile-time error.

Constructors are special methods used to initialize objects. Overloading allows multiple constructors with different parameters.

• Constructors have the same name as the class and no return type.

• Overloading constructors allows for different ways to initialize objects.

• Example: public class Person { public Person(string name) { } public Person(string name, int age) { } }

• Overloaded constructors can call each other using the 'this' keyword.

UB04 is a standard claim form used by healthcare providers to bill for services provided to patients in a facility setting.

• UB04 is also known as the CMS-1450 form

• It is used for billing Medicare, Medicaid, and private insurance companies

• The bill type field on the form indicates the type of service being billed, such as inpatient or outpatient

• The facility type field indicates the type of healthcare facility, such as hospital or nursing home

• The POS field indicates the place of s...read more

I am highly skilled in automating infrastructure using scripting and coding.

• Proficient in scripting languages like Python, Bash, and PowerShell

• Experience in using configuration management tools like Ansible and Chef

• Familiarity with cloud platforms like AWS and Azure and their automation tools

• Implemented infrastructure as code using tools like Terraform

• Automated deployment pipelines using tools like Jenkins and GitLab CI/CD

• Examples: Wrote Python scripts to automate AWS EC2 ins...read more

Constraints in SQL are rules that limit the type of data that can be inserted, updated or deleted from a table.

• Constraints ensure data integrity and consistency.

• Types of constraints include primary key, foreign key, unique, check, and default constraints.

• Examples of constraints include ensuring a column cannot have null values, or ensuring a foreign key references a valid primary key.

• Constraints can be added when creating a table or altered later using the ALTER TABLE stateme...read more

Insurance is a financial protection against potential losses or damages.

• Insurance is a contract between an individual or entity and an insurance company.

• The individual or entity pays a premium in exchange for coverage against specific risks.

• Insurance helps mitigate financial losses in case of accidents, illnesses, or other unforeseen events.

• Types of insurance include health insurance, auto insurance, life insurance, and property insurance.

• Insurance companies assess risks and ...read more

Authorization and COB denial handling for primary and secondary payers

• Authorization denial can occur when a service or procedure is not covered by the insurance plan

• COB denial happens when the primary payer has not paid the full amount and the secondary payer is responsible for the remaining balance

• To handle authorization denial, I would review the insurance policy and communicate with the provider to determine if an appeal is necessary

• For COB denial, I would verify the prima...read more

Explaining something involves breaking down a concept or process into simpler terms for better understanding.

• Start by providing an overview of the topic

• Break down the key components or steps involved

• Use examples or analogies to clarify complex ideas

• Conclude by summarizing the main points

Find the next maximum element in an array of strings.

• Iterate through the array and keep track of the current maximum element.

• Compare each element with the current maximum and update if a larger element is found.

• Return the next maximum element after the current maximum.

Attrition and shrinkage can be handled by implementing effective retention strategies and optimizing workforce management.

• Implementing employee engagement programs to boost morale and job satisfaction

• Offering competitive compensation and benefits packages

• Providing opportunities for career growth and development

• Optimizing scheduling and staffing to minimize overstaffing and understaffing

• Conducting regular performance evaluations and providing feedback to employees

• Identifying a...read more

My approach would be to first understand the project requirements, identify the tools and technologies needed, and then design a modular and scalable framework.

• Understand project requirements

• Identify tools and technologies needed

• Design a modular and scalable framework

• Create a folder structure for the framework

• Define coding standards and guidelines

• Implement reusable functions and libraries

• Integrate with version control system

• Implement reporting and logging mechanisms

• Create tes...read more

Capacity planning is the process of determining the production capacity needed by an organization to meet changing demands for its products.

• It involves forecasting future demand and determining the resources needed to meet that demand

• It helps in optimizing the utilization of resources and reducing costs

• It involves analyzing historical data, market trends, and customer behavior to make informed decisions

• It helps in identifying bottlenecks and taking corrective actions to impro...read more

Program to reverse a string and remove duplicates from it.

• Create a function to reverse the string using a loop or built-in function

• Create a function to remove duplicates using a loop or built-in function

• Split the string by the delimiter and join it with space

Improving quality and production requires a focus on process optimization and employee training.

• Identify areas of inefficiency and implement process improvements

• Invest in employee training and development to improve skills and knowledge

• Regularly review and analyze production data to identify areas for improvement

• Implement quality control measures to ensure consistent output

• Encourage employee feedback and suggestions for improvement

As an automation testing activity, I perform tasks such as creating and executing automated test scripts, analyzing test results, and reporting defects.

• Creating and maintaining automated test scripts using tools like Selenium, Appium, or TestComplete

• Executing automated test scripts and analyzing test results to identify defects

• Reporting defects and working with developers to resolve them

• Integrating automated tests into the continuous integration and delivery pipeline

• Collabora...read more

Release management is the process of planning, scheduling, coordinating, and deploying software releases.

• It involves identifying the scope of the release and the features to be included

• Creating a release plan and schedule

• Coordinating with different teams involved in the release process

• Testing the release to ensure it meets quality standards

• Deploying the release to production

• Monitoring the release to ensure it is stable and functioning as expected

• Managing any issues or bugs th...read more

Reverse a string by iterating through the characters and swapping them

• Create a function that takes a string as input

• Initialize two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move them towards the center until they meet

Sort a linked list

• Use a sorting algorithm like merge sort or quick sort

• Traverse the linked list and rearrange the nodes accordingly

• Ensure to update the head of the linked list after sorting

Prepaid expenses are assets paid in advance while outstanding expenses are liabilities yet to be paid.

• Prepaid expenses are recorded as assets on the balance sheet until they are used or expire.

• Journal entry for prepaid expense: Debit Prepaid Expense, Credit Cash/Bank.

• Outstanding expenses are recorded as liabilities on the balance sheet until they are paid.

• Journal entry for outstanding expense: Debit Expense, Credit Accounts Payable.

• Adjusting entries are made at the end of the...read more

Multithreading in Java allows for concurrent execution of multiple threads within a single program.

• Multithreading can improve performance by allowing multiple tasks to be executed simultaneously.

• Java provides built-in support for multithreading through the Thread class and Runnable interface.

• Synchronization is important to prevent race conditions and ensure thread safety.

• Examples of multithreading in Java include GUI applications, server applications, and parallel processing....read more

I start my work by reviewing my to-do list and prioritizing tasks. I end my work by reviewing what I have accomplished and planning for the next day.

• Review to-do list and prioritize tasks

• Set goals for the day

• Take breaks as needed

• Review accomplishments at the end of the day

• Plan for the next day

• Organize workspace before leaving

Set executor memory to 8GB and executor cores to 5 for optimal performance.

• Set spark.executor.memory to 8g

• Set spark.executor.cores to 5

• Set spark.default.parallelism to 8000

• Use Hadoop InputFormat to read data in 128MB chunks

driver.get() loads a new page while navigate().to() loads a new page or refreshes the current page.

• driver.get() is a method of WebDriver interface that loads a new web page in the current browser window.

• navigate().to() is a method of Navigation interface that loads a new web page or refreshes the current page.

• driver.get() waits for the page to load completely before returning control to the script.

• navigate().to() does not wait for the page to load completely before returning ...read more

ICD guidelines for hypertension and diabetes are important for accurate coding.

• ICD guidelines provide specific codes for hypertension and diabetes based on severity and complications.

• For hypertension, ICD-10-CM codes range from I10 to I15 depending on the type and severity of the condition.

• For diabetes, ICD-10-CM codes range from E08 to E13 depending on the type, complications, and control of the condition.

• ICD guidelines also provide coding instructions for related conditions...read more

ABN is a form used to inform patients of potential non-covered services. Hpcs is a coding system for healthcare procedures. ICD 10 is a coding system for medical diagnoses.

• ABN stands for Advance Beneficiary Notice. It is used to inform Medicare patients of potential non-covered services and the cost they may incur.

• Hpcs stands for Healthcare Common Procedure Coding System. It is used to code healthcare procedures and services for billing purposes.

• ICD 10 stands for Internationa...read more

SQL window functions allow for calculations over a specific subset of data.

• Window functions are used to perform calculations over a specific subset of data

• They are used with the OVER() clause and can be used with aggregate functions

• Examples include ROW_NUMBER(), RANK(), and LAG()

• They are useful for calculating running totals, rankings, and comparing values across rows

Partitions in Kafka are assigned based on the number of partitions specified when creating a topic.

• Partitions are assigned to brokers in a round-robin fashion.

• The number of partitions should be a multiple of the number of brokers to ensure even distribution.

• Reassignment of partitions can be done manually using the Kafka Reassign Partitions tool.

Set is a collection of unique elements with no specific order.

• A set can be created using curly braces {} or the set() function.

• Sets can only contain immutable objects like strings, numbers, and tuples.

• Sets are useful for removing duplicates and performing mathematical operations like union and intersection.

• Example: my_set = {1, 2, 3} or my_set = set([1, 2, 3])

Map is a data structure that stores key-value pairs and allows fast retrieval of values based on their keys.

• Maps are also known as dictionaries or associative arrays.

• Keys in a map must be unique, but values can be duplicated.

• Maps are commonly used in programming for tasks such as caching, memoization, and indexing.

• Examples of programming languages that have built-in support for maps include Python, Java, and JavaScript.

SQL query to get 3 max salary by group

• Use the RANK() function to rank the salaries within each group

• Filter the results to only include rows where the rank is less than or equal to 3

• Order the results by group and salary in descending order

Implemented CI/CD process using Jenkins for automated builds, tests, and deployments.

• Utilized Jenkins for continuous integration and continuous deployment

• Automated build process triggered by code commits to version control

• Implemented automated testing to ensure code quality

• Deployed code to different environments based on predefined pipelines

Major changes in Spring Boot 3 include support for Java 17, improved performance, and enhanced security features.

• Support for Java 17

• Improved performance optimizations

• Enhanced security features such as OAuth 2.1 support

• Updated dependencies and libraries

Windowing functions are used to perform calculations on a subset of data within a larger dataset.

• Windowing functions are used to calculate running totals, moving averages, and rank functions.

• They are commonly used in time series analysis and financial analysis.

• Examples of windowing functions include ROW_NUMBER(), RANK(), DENSE_RANK(), and NTILE().

Yes, I have experience using Terraform for infrastructure as code.

• I have used Terraform to provision and manage infrastructure resources in a declarative manner.

• I have written Terraform configuration files to define the desired state of infrastructure components.

• I have used Terraform to automate the deployment of cloud resources such as virtual machines, storage, and networking.

• I have experience with Terraform modules and remote state management.

• I have integrated Terraform wi...read more

AR denials are common in RCM. Here are some reasons and solutions.

• AR denials can occur due to incorrect patient information or coding errors.

• Insurance coverage issues can also lead to AR denials.

• To prevent AR denials, ensure accurate patient information and coding.

• Verify insurance coverage and eligibility before submitting claims.

• Appeal denied claims with supporting documentation.

• Implement a denial management process to track and address AR denials.

• Train staff on proper billi...read more

Body systems refer to the different organs and tissues that work together to perform specific functions in the body.

• There are 11 major body systems, including the circulatory, respiratory, digestive, nervous, and endocrine systems.

• Each system is made up of specific organs and tissues that work together to perform a specific function.

• For example, the respiratory system includes the lungs, trachea, and bronchi, which work together to bring oxygen into the body and remove carbon...read more

Reverse a string using array of characters

• Create an array of characters from the input string

• Use two pointers to swap characters at opposite ends of the array until they meet

• Join the characters in the array to form the reversed string

Microservices allow for modular, independent services while monolith is a single, cohesive unit.

• Microservices promote scalability and flexibility

• Monoliths are easier to develop and deploy initially

• Microservices can lead to more complex infrastructure and communication between services

• Monoliths can become difficult to maintain and scale as they grow

• Examples: Netflix uses microservices for their streaming platform, while traditional e-commerce platforms often use monolithic arc...read more

Product market analysis involves researching and understanding the target market, competition, and industry trends.

• Identify target market demographics and behavior

• Analyze competition and their strengths/weaknesses

• Research industry trends and potential opportunities

• Gather customer feedback and insights

• Use data and metrics to make informed decisions

Current Ratio formula is Current Assets divided by Current Liabilities.

• Current Ratio = Current Assets / Current Liabilities

• It measures a company's ability to pay off its short-term liabilities with its short-term assets

• A higher current ratio indicates a better ability to meet short-term obligations

• Example: If a company has current assets of $100,000 and current liabilities of $50,000, the current ratio would be 2:1

Micro services design patterns are architectural patterns used to design and implement microservices-based applications.

• Some common microservices design patterns include API Gateway, Service Registry, Circuit Breaker, and Saga Pattern.

• API Gateway pattern acts as a single entry point for all client requests, routing them to the appropriate microservice.

• Service Registry pattern allows microservices to dynamically discover and communicate with each other.

• Circuit Breaker pattern ...read more

Quick Ratio is a financial metric used to measure a company's ability to pay off its current liabilities with its most liquid assets.

• Quick Ratio is also known as Acid Test Ratio

• It is calculated by dividing the sum of cash, marketable securities, and accounts receivable by current liabilities

• A higher Quick Ratio indicates a company's better liquidity position

• A Quick Ratio of 1:1 is considered good

• Example: If a company has $100,000 in cash, $50,000 in marketable securities, and...read more

Reliability Centered Maintenance (RCM) in the health industry focuses on optimizing maintenance strategies to ensure equipment reliability and patient safety.

• RCM in health industry involves identifying critical equipment and determining the most effective maintenance tasks for each

• It aims to minimize downtime, reduce costs, and enhance patient care by prioritizing maintenance efforts based on risk and criticality

• Examples include implementing predictive maintenance techniques ...read more

I am a Senior Associate with 5 years of experience in project management and client relations.

• 5 years of experience in project management and client relations

• Strong communication and leadership skills

• Proven track record of successful project delivery

• Proficient in data analysis and reporting