40+ Infinite Computer Solutions Interview Questions and Answers

Yes

• During load testing of a web application, memory usage gradually increased over time

• Identified the memory leak by monitoring memory consumption using performance testing tools

• Investigated the code and found a section where objects were not being properly released

• Fixed the memory leak by implementing proper object disposal and memory management techniques

Memory leak is a software issue where allocated memory is not released, leading to memory consumption and performance degradation.

• Memory leak occurs when a program fails to deallocate memory that is no longer needed.

• It can happen due to programming errors like not freeing allocated memory or losing references to it.

• Memory leaks can cause the program to consume excessive memory, leading to performance issues and crashes.

• To handle memory leaks, tools like profilers can be used ...read more

Performance engineering is the process of designing, implementing, and optimizing systems to meet performance requirements.

• Performance engineering involves analyzing and understanding performance requirements

• It includes designing and implementing systems to meet those requirements

• Optimizing systems through load testing, stress testing, and performance tuning

• Performance engineering also involves monitoring and analyzing system performance in production

• Examples of performance e...read more

Banks treat accounting entries for activities like principal repayment, interest dues, write-off, past dues by recording them in their financial statements.

• Principal repayment is recorded as a decrease in the loan receivable account and a decrease in the cash account.

• Interest dues are recorded as an increase in the interest income account and an increase in the interest receivable account.

• Write-offs are recorded as a decrease in the loan receivable account and a decrease in t...read more

Performance testing focuses on evaluating the speed, responsiveness, and stability of a system, while performance engineering involves designing and optimizing the system for optimal performance.

• Performance testing is the process of testing the performance characteristics of a system under specific conditions.

• Performance engineering is the proactive approach of designing, building, and optimizing a system for optimal performance.

• Performance testing measures the speed, respons...read more

The initial stages of CBS implementation involve planning, analysis, design, development, testing, and deployment.

• Planning phase involves defining project scope, objectives, and requirements.

• Analysis phase includes assessing current systems and processes to identify areas for improvement.

• Design phase focuses on creating a blueprint for the new CBS system.

• Development phase involves building the system based on the design specifications.

• Testing phase is crucial for ensuring the...read more

Deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release a resource.

• Deadlock occurs when two or more processes are stuck in a circular dependency, where each process is waiting for a resource held by another process.

• It can happen in multi-threaded or multi-process environments.

• Deadlock can be caused by resource contention, improper synchronization, or programming errors.

• Examples of resources that can lead to de...read more

Performance bottleneck can occur in various areas of an application.

• Database queries and indexing

• Network latency and bandwidth

• CPU and memory usage

• Code inefficiencies and poor algorithms

• Third-party integrations

• Hardware limitations

• User load and concurrency

• Application architecture

• Caching and session management

• Security measures

• External factors such as weather or power outages

Generative AI and Fintech: Exploring the intersection of artificial intelligence and financial technology.

• Generative AI can be used in Fintech for tasks such as fraud detection, risk assessment, and personalized financial recommendations.

• Examples of Generative AI in Fintech include chatbots for customer service, algorithmic trading systems, and credit scoring models.

• The combination of Generative AI and Fintech has the potential to revolutionize the financial industry by impro...read more

Revolving credit allows you to borrow up to a certain limit and repay it in full or in part, while non-revolving credit is a one-time loan with a fixed repayment schedule.

• Revolving credit has a credit limit that can be used repeatedly, like a credit card.

• Non-revolving credit is a one-time loan with a fixed repayment schedule, like a car loan.

• Revolving credit allows flexibility in borrowing and repaying, while non-revolving credit has a set repayment plan.

XML databases are easy for processing XML data, while file systems are easy for processing files.

• XML databases are designed specifically for storing and querying XML data.

• They provide efficient indexing and querying capabilities for XML documents.

• Examples of XML databases include eXist-db, BaseX, and MarkLogic.

• File systems, on the other hand, are well-suited for storing and processing files of any type.

• They provide a hierarchical structure for organizing files and directories...read more

To prevent deadlocks in SQL transactions, use proper transaction management techniques.

• Use a consistent order for acquiring locks on resources to avoid circular dependencies.

• Keep transactions short and release locks as soon as they are no longer needed.

• Use lock timeouts to prevent transactions from waiting indefinitely.

• Implement deadlock detection and resolution mechanisms.

• Consider using higher isolation levels like Serializable to minimize concurrency issues.

To troubleshoot a computer booting-up issue, check hardware connections, run diagnostic tests, and troubleshoot software issues.

• Check if all hardware connections are secure and properly connected

• Run diagnostic tests to identify any hardware failures

• Troubleshoot software issues by booting into safe mode or using recovery options

• Check for any recent software or driver updates that may be causing conflicts

• Inspect the BIOS settings and ensure they are correctly configured

• Test the...read more

My expected CTC is negotiable based on the job responsibilities, company size, and industry standards.

• My expected CTC is based on my experience, skills, and qualifications.

• I have researched the market rates for Performance Testers in similar roles and industries.

• I am open to discussing the compensation package and benefits offered by the company.

• I believe in a fair and competitive salary that aligns with my expertise and contributions.

• I am looking for a package that recognize...read more

To handle multiple projects at a time, prioritize tasks, set realistic deadlines, delegate when possible, and communicate effectively.

• Prioritize tasks based on urgency and importance

• Set realistic deadlines for each project

• Delegate tasks to team members when possible

• Communicate effectively with team members and stakeholders

• Use project management tools to track progress and manage tasks

• Manage time effectively by creating a schedule and sticking to it

• Break down complex projects ...read more

CPU bottleneck can be handled by optimizing code, upgrading hardware, and load balancing.

• Identify the root cause of the CPU bottleneck through performance monitoring tools.

• Optimize the code by identifying and fixing inefficient algorithms or resource-intensive operations.

• Upgrade hardware by adding more powerful CPUs or increasing the number of cores.

• Implement load balancing techniques to distribute the workload across multiple CPUs or servers.

• Consider vertical scaling by upgr...read more

Load balancing is the process of distributing network traffic across multiple servers to optimize performance and prevent overload.

• Load balancing improves scalability and availability of applications.

• It ensures that no single server is overwhelmed with traffic.

• Load balancers can use various algorithms to distribute traffic, such as round-robin, least connections, or IP hash.

• Examples of load balancing technologies include hardware load balancers, software load balancers, and c...read more

Customer support focuses on resolving specific issues, while customer experience encompasses the overall journey and satisfaction of the customer.

• Customer support involves addressing and resolving customer inquiries, problems, and complaints.

• Customer experience refers to the overall perception and satisfaction of the customer throughout their interactions with a company.

• Customer support is reactive, responding to specific customer needs and issues.

• Customer experience is proac...read more

JVM is a virtual machine that executes Java bytecode. It manages memory, provides runtime environment, and enables platform independence.

• JVM stands for Java Virtual Machine.

• It is responsible for interpreting and executing Java bytecode.

• JVM manages memory allocation and garbage collection.

• It provides a runtime environment for Java applications.

• JVM enables platform independence by abstracting the underlying hardware and operating system.

• JVM includes components like class loader...read more

Handling an irate customer requires active listening, empathy, and problem-solving skills.

• Remain calm and composed

• Listen actively and let the customer vent their frustrations

• Show empathy and understanding

• Apologize for the inconvenience caused

• Offer a solution or alternative options

• Follow up to ensure customer satisfaction

End-to-end implementation of CBS for Loans module

• Analyze current loan processes and requirements

• Design CBS system configuration for loan products

• Develop and test loan module functionalities

• Integrate CBS with existing systems for loan processing

• Train users on new CBS loan module

• Monitor and optimize CBS loan module performance

Answers to software testing interview questions

• Ascy method is not a known term in software testing

• Inner exception is an exception that occurs within another exception

• Ref and out are both used for passing parameters by reference, but out requires the variable to be initialized before use

• Singleton design pattern is a creational pattern that ensures only one instance of a class is created and provides a global point of access to it

• Sealed class is a class that cannot be inherited...read more

Managing campus strategy and relations is crucial for successful recruitment.

• Develop a clear campus recruitment strategy that aligns with the company's goals and values.

• Build strong relationships with key stakeholders such as career services, professors, and student organizations.

• Attend career fairs and other campus events to connect with potential candidates and promote the company.

• Offer internships and other opportunities to engage with students and showcase the company's c...read more

SDLC stands for Software Development Life Cycle. It is a process used to design, develop, and maintain software.

• SDLC is a systematic approach to software development.

• It consists of several phases including requirements gathering, design, coding, testing, deployment, and maintenance.

• Each phase has specific activities and deliverables.

• SDLC models include Waterfall, Agile, and DevOps.

• Example: In the requirements gathering phase, the software developer works with stakeholders to ...read more

A small pointer is a pointer that takes up less memory space and is used to optimize memory usage and improve performance.

• Small pointers are typically used in embedded systems where memory is limited

• They can also be used in data structures to reduce memory overhead

• Example: Using a small pointer instead of a regular pointer to store memory addresses

Testing in real life scenarios involves checking the functionality and performance of products or services in practical situations.

• Testing the durability of a new phone by dropping it from different heights

• Testing the waterproof feature of a watch by submerging it in water

• Testing the battery life of a laptop by using it continuously for a certain period

• Testing the taste and quality of a new food product by conducting a taste test

• Testing the safety features of a car by simulat...read more

Using StringBuilder type instead of string builder is incorrect.

• StringBuilder is a class in Java used to create mutable strings.

• Using 'string builder' instead of 'StringBuilder' will result in a compilation error.

• Correct usage: StringBuilder sb = new StringBuilder();

Print last four characters of a string and explain a CI/CD pipeline with an example

• To print last four characters of a string, you can use string slicing in programming languages like Python or JavaScript

• For example, in Python: 'string[-4:]' will give you the last four characters of the string

• A CI/CD pipeline automates the process of testing and deploying code changes. It typically includes stages like build, test, deploy, and monitor

• An example of a CI/CD pipeline could be: co...read more

Waterfall is a linear approach while Agile is iterative. Agile is more flexible and adaptable to changes.

• Waterfall is a sequential process while Agile is iterative

• Waterfall is more rigid and less flexible than Agile

• Agile is more adaptable to changes and customer feedback

• Agile promotes collaboration and teamwork while Waterfall is more individualistic

• Examples of Waterfall include construction projects while Agile is commonly used in software development

The three financial statements are the income statement, balance sheet, and cash flow statement.

• Income statement: Shows a company's revenues and expenses over a specific period of time.

• Balance sheet: Provides a snapshot of a company's financial position at a specific point in time, showing assets, liabilities, and equity.

• Cash flow statement: Details the cash inflows and outflows of a company during a specific period, showing how changes in balance sheet and income statement a...read more

Stock represents ownership in a company, while share is a single unit of ownership in a company.

• Stock is the overall ownership of a company, while share is a single unit of that ownership.

• Stock can refer to all shares of a company, while share refers to a specific unit of ownership.

• Stock can include different classes of shares, such as common and preferred shares.

• Shares are bought and sold on stock exchanges, while stock represents the total value of all shares.

• Stockholders o...read more

Manual testing is the process of manually testing software for defects, functionality, and usability.

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

• Testers follow predefined test cases to ensure the software meets requirements.

• It includes exploratory testing to uncover unexpected issues.

• Examples: Regression testing, smoke testing, ad-hoc testing.

Reverse a given string

• Use a loop to iterate through the characters of the string

• Append each character to a new string in reverse order

• Return the reversed string

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• It involves running previously executed test cases to verify that the existing features still work correctly after code changes.

• Regression testing helps in identifying any defects introduced by new code changes.

• Automated testing tools are often used to streamline the regression testing process.

• Regression testing is an essenti...read more

API rate limiter design problem involves balancing between preventing abuse and allowing legitimate usage.

• Define rate limits based on API endpoints or user roles

• Implement token bucket or leaky bucket algorithm for rate limiting

• Consider using sliding window algorithm for more dynamic rate limiting

• Provide clear error messages when rate limit is exceeded

• Monitor and adjust rate limits based on usage patterns

An attribute of a function is a characteristic or property that defines its behavior or functionality.

• Attributes can include things like input parameters, return type, visibility, and access modifiers.

• Examples of function attributes include public/private access, static/non-static behavior, and return type like int or string.

Swap the positions of two numbers in an array of strings.

• Iterate through the array to find the positions of the two numbers to be swapped.

• Store the two numbers in temporary variables.

• Swap the positions of the two numbers in the array.

Reversing a linked list involves changing the direction of pointers to go from the end to the beginning.

• Start by initializing three pointers: current, prev, and next.

• Iterate through the list, updating pointers to reverse the links.

• Update the head pointer to point to the new beginning of the list.

Oops concept is a programming paradigm based on the principles of object-oriented programming.

• Encapsulation: bundling data and methods that operate on the data into a single unit (class)

• Inheritance: ability of a class to inherit properties and behavior from another class

• Polymorphism: ability to present the same interface for different data types

• Abstraction: hiding the complex implementation details and showing only the necessary features