Jobs cruze Interview Questions and Answers

Find the first non-repeating character in a string.

• Create a hash table to store the frequency of each character in the string.

• Iterate through the string and check the frequency of each character.

• Return the first character with a frequency of 1.

Connection pooling is a technique of reusing database connections to improve performance.

• Connection pooling helps to reduce the overhead of creating and destroying database connections.

• It maintains a pool of connections that can be reused by multiple clients.

• Connection pooling is commonly used in web applications to handle multiple requests simultaneously.

• It can be configured with parameters like maximum number of conn...read more

A singleton class in PHP is a class that can only be instantiated once.

• Create a private constructor to prevent direct instantiation

• Create a private static variable to hold the instance of the class

• Create a public static method to get the instance of the class

• Ensure that the public static method always returns the same instance

To connect to MySQL database using PHP, create a Connection class.

• Use mysqli_connect() function to establish a connection

• Pass the database credentials as parameters to the function

• Create a constructor method to initialize the connection

• Create a query method to execute SQL queries

• Close the connection using mysqli_close() method

There are three types of errors in PHP: syntax errors, runtime errors, and logical errors.

• Syntax errors occur when the code is not written correctly, such as missing semicolons or parentheses.

• Runtime errors occur during the execution of the code, such as trying to access an undefined variable.

• Logical errors occur when the code runs without errors, but produces unexpected results, such as a miscalculation in a formula.

Session in PHP allows to store user data on the server for later use.

• Session starts when a user logs in and ends when the user logs out or the session expires.

• Session data is stored on the server and identified by a unique session ID.

• Session variables can be set and accessed using the $_SESSION superglobal array.

• Session can be destroyed using the session_destroy() function.

• Session can be used to store user-specific dat...read more

Find missing element in an array of elements from 0 to n-1

• Calculate sum of all elements in array and subtract from sum of n natural numbers

• Use XOR operation on all elements and n natural numbers

• Sort the array and find the missing element

Developed a web application for tracking student attendance and performance

• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database storage

• Integrated authentication and authorization features for secure access

I am a highly motivated and detail-oriented analyst with a strong background in data analysis and problem-solving.

• I have a Bachelor's degree in Economics with a focus on statistical analysis

• I have experience using various data analysis tools such as Excel, SQL, and Tableau

• I have successfully completed several projects that involved analyzing large datasets to identify trends and make recommendations

• I am a quick learner

The company is a leading financial services firm specializing in investment banking and asset management.

• Founded in 1869 by Marcus Goldman

• Headquartered in New York City

• Offers a wide range of financial services including mergers and acquisitions, underwriting, and wealth management

• Known for its prestigious client base and high-profile deals

I am not currently planning to get married.

• I am currently focused on my career and personal growth.

• Marriage is not a priority for me at the moment.

• I believe in taking the time to find the right partner before committing to marriage.

I am a passionate software engineer with experience in developing web applications using various technologies.

• Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

• Proficient in backend development with Node.js and databases like MongoDB and MySQL

• Familiar with version control systems like Git and deployment tools like Docker

• Strong problem-solving skills and ability

My hobbies include hiking, playing guitar, and reading science fiction novels.

• Hiking in local trails and national parks

• Playing acoustic and electric guitar in a band

• Reading books by authors like Isaac Asimov and Philip K. Dick

Cognizant offers diverse projects, global exposure, and a strong focus on employee growth and development.

• Cognizant provides opportunities to work on diverse projects, allowing for a broad range of experience.

• The company has a global presence, offering exposure to different cultures and markets.

• Cognizant emphasizes employee growth and development through training programs and career advancement opportunities.

Engineering allows me to solve complex problems, innovate, and create solutions that have a real impact on society.

• Engineering provides a platform to apply scientific knowledge to practical problems.

• It involves critical thinking, problem-solving, and creativity.

• Engineers have the opportunity to work on cutting-edge technologies and make a tangible difference in the world.

• For example, designing software systems to impro...read more

Pin diagram of 8085 microprocessor

• 8085 has 40 pins in total

• Pins are grouped into 5 categories: power supply, address bus, data bus, control and status signals

• Pin 1 is the reset pin, Pin 40 is the Vcc pin

• Examples of control signals: RD, WR, ALE, INT, HOLD

• Examples of status signals: S0, S1, IO/M, HLDA

8086 is an advanced version of 8085 with more features and capabilities.

• 8086 has a 16-bit data bus while 8085 has an 8-bit data bus.

• 8086 has more registers than 8085.

• 8086 has a higher clock speed than 8085.

• 8086 supports virtual memory while 8085 does not.

• 8086 has a more advanced instruction set than 8085.

• Example: 8086 can perform multiplication and division operations while 8085 cannot.

Opamp stands for operational amplifier. It is an electronic device used to amplify and process signals.

• Opamps have high gain and can amplify signals to a very high degree.

• They are commonly used in audio amplifiers, filters, and signal processing circuits.

• Opamps have two input terminals and one output terminal.

• They can be configured in different ways to perform various functions such as amplification, filtering, and osc...read more

Waterfall model has five phases: requirements, design, implementation, testing, and maintenance.

• Requirements phase: gathering and documenting requirements

• Design phase: creating a detailed design based on requirements

• Implementation phase: coding and integrating components

• Testing phase: verifying that the system meets requirements

• Maintenance phase: making changes and updates to the system

• Example: building a website using...read more

Types of testing include unit, integration, system, acceptance, regression, performance, and security testing.

• Unit testing: testing individual units or components of the software

• Integration testing: testing how different units or components work together

• System testing: testing the entire system as a whole

• Acceptance testing: testing to ensure the software meets the requirements and is ready for release

• Regression testing...read more

I enjoy participating in coding competitions, volunteering at tech events, and attending hackathons.

• Participating in coding competitions such as Codeforces or Topcoder

• Volunteering at tech events like hackathons or coding workshops

• Attending hackathons to collaborate with other developers and work on innovative projects

My goal in life is to continuously learn and grow, while making a positive impact on the world around me.

• Continuous learning and personal growth

• Making a positive impact on the world

• Achieving work-life balance

• Building meaningful relationships

• Contributing to the community

I am open to relocation for the right opportunity.

• I am willing to relocate for the job.

• I have no issues moving to a new location for work.

• I am excited about the possibility of experiencing a new city or country.

• I have relocated for previous jobs and have found it to be a positive experience.

I want to relocate for career growth and new experiences, but I am hesitant due to leaving behind family and friends.

• Career growth opportunities in new location

• Desire for new experiences and challenges

• Concerns about leaving behind family and friends

I enjoy watching a variety of shows on TV, including dramas, comedies, and documentaries.

• I watch dramas like Grey's Anatomy and This Is Us

• I enjoy comedies such as The Office and Brooklyn Nine-Nine

• I also like watching documentaries on topics like nature and history

I last saw the movie Inception.

• Directed by Christopher Nolan

• Released in 2010

• Genre: Sci-Fi/Thriller

• Starring Leonardo DiCaprio

My aspiration is to become a successful financial analyst and eventually move into a leadership role within the company.

• To become a successful financial analyst by continuously improving my analytical skills and staying updated on market trends

• To eventually move into a leadership role within the company by demonstrating strong leadership qualities and strategic thinking

• To contribute towards the growth and success of th...read more

I have a strong analytical background and experience in data interpretation, which will allow me to excel in this role.

• Extensive experience in data analysis and interpretation

• Strong analytical skills and attention to detail

• Ability to communicate complex findings in a clear and concise manner

• Proven track record of delivering actionable insights from data

• Familiarity with relevant tools and software such as Excel, SQL, an

I am a recent graduate with a degree in Computer Science and a passion for coding and problem-solving.

• Graduated with a degree in Computer Science

• Passionate about coding and problem-solving

• Completed internships at tech companies

I was responsible for managing social media accounts and creating engaging content for a marketing agency.

• Managed social media accounts for clients

• Created content calendars and posts for various platforms

• Analyzed engagement metrics to optimize content strategy

MBA provides advanced business knowledge, skills, and networking opportunities.

• MBA helps develop strategic thinking and leadership skills.

• It provides a deeper understanding of business concepts and practices.

• MBA graduates often have better job prospects and higher earning potential.

• Networking opportunities with industry professionals and alumni can lead to valuable connections.

• Specializations in areas like finance, mar...read more

Key takeaways from MBA include leadership skills, strategic thinking, and networking opportunities.

• Developing strong leadership skills through coursework and group projects

• Learning strategic thinking and decision-making through case studies and simulations

• Building a strong professional network through internships, networking events, and alumni connections

Cognizant offers a diverse range of opportunities for growth and development in the IT industry.

• Cognizant is a global leader in IT services and consulting.

• They have a strong reputation for delivering high-quality solutions to clients.

• Cognizant provides a collaborative and inclusive work environment.

• They offer extensive training and learning programs to enhance skills.

• Cognizant has a strong focus on innovation and digit...read more

Studied case studies on marketing strategies and ethical dilemmas in business.

• Analyzed a case study on how Coca-Cola's marketing strategies helped increase sales and brand awareness.

• Discussed a case study on a company facing an ethical dilemma and the consequences of their decisions.

• Explored the impact of social media on consumer behavior in a case study on a successful marketing campaign.

My goal in life is to make a positive impact on others and contribute to the betterment of society.

• To work towards improving healthcare access and quality

• To advocate for social justice and equality

• To continuously learn and grow both personally and professionally

• To build meaningful relationships and support others in their journeys

• To leave a lasting legacy that inspires future generations

I resolved a disagreement between two team members by facilitating a meeting and encouraging open communication.

• Identified the root cause of the disagreement

• Scheduled a meeting with both parties to discuss the issue

• Encouraged open communication and active listening

• Facilitated a compromise that satisfied both parties