100+ Project Associate Interview Questions and Answers

Answers to common questions related to APIs, API management, and Apigee Edge

• API stands for Application Programming Interface and is a set of protocols and tools for building software applications

• APIs are popular because they allow different software systems to communicate and share data with each other

• API management involves the process of creating, publishing, documenting, and analyzing APIs

• Apigee Edge is an API management tool that provides features such as security, analyt...read more

Formic acid is an organic compound that is called acid but does not have a COOH group.

• Formic acid (HCOOH) is the simplest carboxylic acid and is commonly known as formic acid.

• It is called an acid because it can donate a hydrogen ion (H+) in solution.

• Formic acid does not have a COOH group (carboxyl group) like other carboxylic acids.

• It is a colorless liquid with a pungent odor and is found naturally in the venom of certain ants.

• Formic acid is used in various industries, includ...read more

Interview questions for Project Associate position covering OOPS concepts, MVC, ADO.NET, and SQL.

• Four pillars of OOPS: Abstraction, Encapsulation, Inheritance, Polymorphism

• Abstract class: Cannot be instantiated, can have abstract and non-abstract methods

• Interfaces: Contract that defines a set of methods, can be implemented by classes

• Finalize method: Called by garbage collector before object is destroyed

• Dispose method: Used to release unmanaged resources, should be called expl...read more

Answers to technical interview questions on Java programming language.

• To display most frequent element in an array using Streams and Lambda expression, use Collectors.groupingBy() and Collectors.counting() methods.

• ArrayList is an ordered collection of elements while HashSet is an unordered collection of unique elements.

• Default methods in interface are used to provide a default implementation of a method that can be overridden by implementing classes.

• StringBuffer is synchroniz...read more

KBr is used in IR spectroscopy as a sample holder and diluent.

• KBr is transparent in the IR region

• It has low absorbance in the IR region

• It is easy to grind into a fine powder

• It is inert and does not react with most samples

• It has a low refractive index which reduces interference from the sample

• Examples of samples analyzed with KBr include polymers, oils, and organic compounds

Commands to push a file to a repository are add, commit, push.

• Use 'git add ' to stage the changes

• Use 'git commit -m ' to commit the changes

• Use 'git push' to push the changes to the remote repository

The ionic product of water is 10^-14 because of the self-ionization of water molecules.

• Water molecules can self-ionize into H+ and OH- ions.

• The concentration of H+ and OH- ions in pure water is equal.

• The product of their concentrations is always 10^-14 at 25°C.

Bending moment is the force that causes a beam to bend. Torque is the force that causes an object to rotate. Beams can be classified into different types based on their shape and support. Angle of projection is the angle at which an object is projected. Composite materials are made up of two or more materials with different properties.

• Bending moment is the product of force and distance from the force to the point of rotation.

• Torque is the product of force and the perpendicula...read more

Unit testing is a software testing technique where individual units or components of a software application are tested in isolation.

• Unit testing helps to identify defects early in the development cycle

• It ensures that each unit of code is working as expected

• Unit tests are automated and can be run frequently to catch regressions

• Popular unit testing frameworks include JUnit for Java, NUnit for .NET, and pytest for Python

Explaining @Transactional, @Value, @Id, bean lifecycle and scopes

• Transactional is used to manage transactions in Spring

• Value is used to inject values from properties files or environment variables

• Id is used to mark a field as the primary key of an entity

• Bean lifecycle includes instantiation, initialization, use and destruction

• Scopes of bean include singleton, prototype, request, session, and global session

I am currently working on the Scrum process of Agile and using Jira as the tool for project management.

• I am following the Scrum framework of Agile which involves iterative and incremental development.

• I am responsible for facilitating daily stand-up meetings, sprint planning, sprint review, and retrospective meetings.

• Jira is the tool we are using for project management, which helps us to track the progress of tasks, assign them to team members, and monitor the overall project ...read more

Flash distillation is a process of separating components of a mixture by heating it quickly and then cooling it rapidly. Types of distillations used in medicinal plants include steam distillation, solvent extraction, and hydrodistillation.

• Flash distillation involves heating a mixture quickly and then cooling it rapidly to separate its components

• Steam distillation is commonly used to extract essential oils from medicinal plants

• Solvent extraction involves using a solvent to dis...read more

Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine.

• Node.js allows for server-side scripting and event-driven programming.

• It has a large and active community with a vast number of libraries and modules available.

• Node.js is known for its scalability and high performance.

• Cons include potential security vulnerabilities and difficulty in debugging asynchronous code.

• Node.js is commonly used for web applications, real-time chat applications, and IoT devices.

Match and merge rules determine how records are matched and merged in a database. Match level refers to the criteria used to identify potential matches, while search level refers to the process of finding and comparing those potential matches.

• Match rules define the criteria used to identify potential matches between records.

• Merge rules determine how those potential matches are combined into a single record.

• Match level refers to the criteria used to identify potential matches,...read more

Provisioning tool is used to automate the process of setting up and managing resources. Layout designer is a tool to design the layout of the provisioning portal. Reference entity is a data model used in provisioning.

• Provisioning tool automates the process of setting up and managing resources

• Layout designer is a tool to design the layout of the provisioning portal

• Reference entity is a data model used in provisioning

• Provisioning tools include Chef, Puppet, Ansible, etc.

• Layout ...read more

Microservices are small, independent, and loosely coupled services that work together to form a larger application.

• Microservices are independently deployable and scalable.

• Each microservice performs a specific task and communicates with other services through APIs.

• Monolithic applications are a single, tightly-coupled unit, while microservices are modular and flexible.

• Microservices allow for faster development and easier maintenance.

• Examples of microservices include Amazon, Net...read more

Single threaded operation refers to the execution of a program using only one thread of execution.

• Single threaded programs can only perform one task at a time.

• They are simpler to write and debug than multi-threaded programs.

• Examples of single threaded programs include most console applications and simple scripts.

• Single threaded programs can be less efficient than multi-threaded programs when dealing with complex tasks or large amounts of data.

Various softwares and sources are used for prior art search, including patent databases, academic journals, and search engines.

• Patent databases such as USPTO, EPO, and WIPO

• Academic journals such as Google Scholar and PubMed

• Search engines such as Google and Bing

• Specialized search tools such as PatSnap and Innography

• Familiarity with Boolean operators and advanced search techniques is important

• Experience with patent classification systems such as CPC and IPC is helpful

Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and dependencies.

• Spring Boot uses the concept of 'beans' to manage application components and their dependencies.

• Beans are Java objects that are instantiated, assembled, and managed by the Spring IoC container.

• The scope of a bean determines its lifecycle and visibility within the application context.

• There are several bean scopes in Spring Boot, including single...read more

Equilibrium constant is a measure of the ratio of products to reactants at equilibrium.

• It is denoted by Kc or Keq.

• It is calculated by dividing the concentration of products by the concentration of reactants at equilibrium.

• It is a constant value for a given reaction at a given temperature.

• It helps in predicting the direction of a reaction.

• If Kc is greater than 1, the reaction favors the products. If Kc is less than 1, the reaction favors the reactants.

• If Kc is equal to 1, the ...read more

Thermodynamics is the study of energy and its transformations in systems.

• It deals with the relationship between heat, work, and energy.

• It focuses on the principles of energy conservation and entropy.

• Thermodynamics is used in various fields like engineering, physics, chemistry, and biology.

• Examples include the study of heat engines, refrigeration systems, and chemical reactions.

They would want to talk to experts in market research, local regulations, supply chain logistics, and cultural norms.

• Market research experts to understand consumer behavior and preferences in India

• Experts in local regulations to navigate legal requirements for setting up a business in India

• Supply chain logistics experts to optimize distribution and transportation in the Indian market

• Experts in cultural norms to tailor marketing strategies and product offerings to the Indian a...read more

Agile is a project management methodology that emphasizes flexibility, collaboration, and iterative development.

• Agile values individuals and interactions over processes and tools

• It emphasizes working software over comprehensive documentation

• It involves frequent communication and collaboration between team members

• It encourages adapting to change rather than following a rigid plan

• Examples of agile methodologies include Scrum, Kanban, and Extreme Programming

Sleep and wait are methods used in Thread class in Java for pausing the execution of a thread.

• Sleep method pauses the execution of the current thread for a specified amount of time.

• Wait method pauses the execution of the current thread until another thread notifies it to resume.

• Sleep method does not release the lock on the object while wait method releases the lock on the object.

• Sleep method is used for delay whereas wait method is used for synchronization.

• Example: Thread.sle...read more

SwiftLint is a tool to enforce Swift style and conventions.

• SwiftLint is used to ensure consistent coding style and best practices in Swift code.

• It can be integrated into Xcode or run as a command line tool.

• SwiftLint checks for issues such as unused code, trailing whitespace, and naming conventions.

• It can be customized with rules and configurations to fit specific project needs.

Different techniques of performance tuning include indexing, query optimization, caching, and code refactoring.

• Indexing: Creating indexes on frequently queried columns to improve search performance.

• Query optimization: Rewriting queries to make them more efficient by reducing the number of operations or utilizing indexes.

• Caching: Storing frequently accessed data in memory to reduce the need for repeated database queries.

• Code refactoring: Restructuring code to improve efficienc...read more

The solution to eradicating manual scavenging involves a multi-pronged approach.

• Implementing strict laws and regulations against manual scavenging

• Providing alternative employment opportunities and skill development programs for manual scavengers

• Investing in technology and equipment for mechanized cleaning of sewage and septic tanks

• Creating awareness and sensitization programs to change societal attitudes towards manual scavengers

• Providing rehabilitation and compensation to ma...read more

Yes, I am familiar with applying pivot and vlookup formulas on databases.

• Pivot formula is used to summarize and reorganize data in a table

• Vlookup formula is used to search for a value in a table and return a corresponding value

• Examples: =PIVOT(data_range, row_field, column_field, value_field), =VLOOKUP(lookup_value, table_array, col_index_num, range_lookup)

Contract abstraction and reviewing involves analyzing and summarizing key information from legal contracts.

• Contract abstraction involves identifying and extracting important information from contracts, such as key terms, obligations, and deadlines.

• Contract reviewing involves analyzing the extracted information to ensure compliance with legal requirements and identifying any potential risks or issues.

• This process is commonly used in industries such as healthcare, finance, and ...read more

IBM MQ is a messaging middleware that enables communication between applications using messages.

• IBM MQ is a reliable and secure messaging solution

• It supports various messaging patterns like point-to-point and publish/subscribe

• IBM MQ can be configured in Java code using the MQ classes for Java API

• Configuration involves setting up connection factories, queues, and channels

• Example: Configuring IBM MQ in Java code involves creating a connection factory, setting properties like ho...read more

Yes, parallel execution is possible in microservices.

• Microservices architecture allows for independent deployment and scaling of services.

• Each microservice can be executed in parallel, enabling concurrent processing.

• Parallel execution improves performance and scalability of the overall system.

• Microservices can communicate asynchronously, further enhancing parallelism.

• Examples of parallel execution in microservices include processing multiple requests simultaneously and execut...read more

Swapping two numbers without using a third variable in a program

• Use bitwise XOR operation to swap two numbers without using a third variable

• Example: int a = 5, b = 10; a = a ^ b; b = a ^ b; a = a ^ b; // Now a = 10, b = 5

• Ensure the numbers are not the same to avoid getting 0 as a result

Questions related to database concepts and work experience.

• Views are virtual tables while MVs are physical tables that store the result of a query.

• Rank assigns a unique rank to each row while dense_rank assigns the same rank to rows with the same value.

• Functions return a value while procedures do not. Private functions are only accessible within the package they are defined in.

• Discussed my previous work experience and responsibilities.

Microservices is an architectural style where an application is composed of small, independent services that communicate with each other.

• Microservices are independently deployable and scalable.

• Each microservice performs a specific business function.

• Communication between microservices is usually through APIs.

• Microservices can be developed using different programming languages and technologies.

• Examples of companies using microservices include Netflix, Amazon, and Uber.

Protein purification involves several steps including solubilization of protein before purification.

• Solubilization helps to extract the protein from the cell or tissue sample.

• It involves breaking down the cell membrane or tissue matrix to release the protein.

• Different solubilization methods can be used depending on the type of protein and sample.

• Common solubilization methods include sonication, homogenization, and detergents.

• Solubilization is important for efficient purificat...read more

Calorific value is the amount of heat energy released when a unit mass of fuel is burned.

• Calorific value is measured in units of energy per unit of mass.

• It is used to compare the energy content of different fuels.

• Higher calorific value means more energy is released per unit mass of fuel.

• Examples of fuels with high calorific value include coal, natural gas, and diesel.

• Calorific value can be affected by factors such as moisture content and impurities in the fuel.

I would highlight the ease of use and accessibility features of iPhone to make it appealing to a 90 year old lady.

• Emphasize the large display and adjustable font sizes for easy reading

• Demonstrate the voice assistant feature for hands-free use

• Highlight the emergency SOS feature for added safety

• Explain the simplicity of the user interface and how it can be customized to suit her needs

• Mention the availability of various apps for entertainment and communication with loved ones

var, let & const are JavaScript keywords used for declaring variables with different scoping rules.

• var has function scope and can be redeclared and updated

• let has block scope and can be updated but not redeclared

• const has block scope and cannot be updated or redeclared

• Use const for values that won't change, let for values that will change, and var for legacy code

• Example: var x = 10; let y = 'hello'; const z = true;

SQL is a standard language for managing relational databases, while PLSQL is Oracle's proprietary extension for SQL with procedural capabilities.

• SQL is a standard language used to manage and manipulate data in relational databases.

• PLSQL is Oracle's proprietary extension to SQL that adds procedural capabilities.

• SQL is used for querying and updating data, while PLSQL is used for writing procedural code like functions and stored procedures.

• SQL is a declarative language, while PL...read more

Telangana and Andhra Pradesh are known for the cultivation of various medicinal and aromatic plant crops.

• Turmeric

• Tulsi

• Mint

• Lemongrass

• Aloe Vera

• Ginger

• Coriander

• Fennel

• Rosemary

• Lavender

Node.js was chosen for its event-driven, non-blocking I/O model and scalability.

• Node.js is well-suited for real-time applications that require high concurrency and low latency.

• Java is better suited for large-scale enterprise applications that require strict type checking and robust error handling.

• Node.js has a large and active community with many useful libraries and frameworks.

• Node.js is lightweight and easy to deploy, making it a good choice for microservices architecture.

• N...read more

Web API requests in ASP.NET Core are processed through middleware in the request pipeline.

• Web API requests are processed through middleware components in the ASP.NET Core pipeline.

• Each middleware component can inspect, modify, or pass on the request to the next component.

• Middleware components can perform tasks such as authentication, logging, routing, and error handling.

• The request pipeline is configured in the Startup class using the Configure method.

Handling instruments for experiments requires proper care and attention.

• Ensure instruments are clean and in good working condition before use.

• Follow proper handling techniques to prevent damage or contamination.

• Store instruments in designated areas when not in use.

• Use appropriate protective gear, such as gloves or goggles, when necessary.

• Calibrate instruments regularly to maintain accuracy.

• Keep a record of instrument usage and maintenance for future reference.

The average transformer losses in % typically range from 1-3%.

• Transformer losses are mainly categorized into copper losses and iron losses.

• Copper losses occur due to the resistance of the winding wire and are proportional to the square of the current flowing through the transformer.

• Iron losses, also known as core losses, occur due to hysteresis and eddy current losses in the transformer core material.

• Overall, transformer losses can vary depending on the efficiency and design ...read more

Distribution transformers are better suited for buildings due to their lower voltage output and smaller size.

• Distribution transformers are designed for lower voltage output, making them safer for buildings.

• Distribution transformers are smaller in size compared to power transformers, making them easier to install in buildings.

• Distribution transformers are more cost-effective for smaller-scale applications like buildings.

• Examples: Pole-mounted distribution transformers, pad-mou...read more

A code migration tool is used to transfer code from one platform to another.

• Code migration tools automate the process of transferring code from one platform to another.

• They can be used to migrate code between different programming languages or frameworks.

• Examples of code migration tools include Apache's Ant, Microsoft's Visual Studio, and JetBrains' ReSharper.

• Code migration tools can help save time and reduce errors when transferring code.

• They can also help ensure that the mi...read more

Job scheduler is a tool that automates the execution of tasks at specified times or events.

• Job scheduler helps in automating repetitive tasks

• It can be used for scheduling backups, sending emails, running scripts, etc.

• Examples of job schedulers include Cron, Windows Task Scheduler, and Jenkins

• Job scheduler can improve efficiency and reduce errors in task execution