HashCash Consultants Interview Questions and Answers

Q1. ACID Properties
Ans. 
ACID properties are a set of properties that guarantee reliable and consistent transactions in a database system.
• Atomicity ensures that either all operations in a transaction are completed successfully or none at all.

• Consistency ensures that the database remains in a valid state before and after the transaction.

• Isolation ensures that the concurrent execution of transactions results in a system state that would be obtai...read more
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Q2. What are Idempotent HTTP Requests?
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Idempotent HTTP requests are requests that can be repeated multiple times without changing the result beyond the initial request.
• Idempotent requests have the same outcome no matter how many times they are executed.

• GET, PUT, and DELETE HTTP methods are typically idempotent.

• POST requests are not idempotent as they can create new resources with each execution.
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Q3. Questions regarding your project, and how did you learn from the projects and tasks assigned to you?
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Q4. System Design
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Q1. Location and work area
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Q2. Basic details in general
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Q1. Current and previous work experience and relevance
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Q2. Territories covered
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Q1. Work experience, relevant experience
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Q2. How can I expand their market
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Expanding the market can be achieved through market research, identifying new target demographics, developing new products or services, and implementing effective marketing strategies.
• Conduct market research to identify potential new markets or untapped segments within the current market.

• Analyze competitors to understand their strategies and identify opportunities for differentiation.

• Develop new products or services th...read more
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Q1. Java related basic questions
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Q2. Android questions based on previous roles
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Q1. Scenario based questions were asked
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Q2. In depth questions for knowledge check
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Q1. Previous roles & responsibilities
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Q2. One basic stack & queue question
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Q1. Roles and responsibilities
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Q2. Problem based questions
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Q3. Code test & discussions over best practices, best solutions, time and space complexities
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Q1. Year of experience
Ans. 
I have 5 years of experience working as a Quality Engineer in the manufacturing industry.
• 5 years of experience as a Quality Engineer

• Experience in implementing quality control processes

• Knowledge of quality standards and regulations

• Experience in conducting quality audits and inspections

• Experience in root cause analysis and problem-solving
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Q2. Why did you leave your last job
Ans. 
Seeking new challenges and opportunities for growth in a different work environment.
• Desire for career advancement

• Seeking new challenges

• Relocation

• Company downsizing

• Better work-life balance
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Q1. How do you investigate a quality issue?
Ans. 
I investigate a quality issue by gathering data, analyzing root causes, implementing corrective actions, and monitoring results.
• Gather relevant data and documentation related to the quality issue

• Analyze the data to identify potential root causes of the issue

• Develop and implement corrective actions to address the root causes

• Monitor the effectiveness of the corrective actions and make adjustments as needed
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Q2. What frustrates you?
Ans. 
Lack of communication and unclear expectations frustrate me.
• Lack of communication between team members

• Unclear expectations from management

• Inefficient processes causing delays

• Micromanagement

• Lack of recognition for hard work
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Q1. What is the difference between Validation and Verification
Ans. 
Validation ensures the product meets the customer's needs, while verification ensures the product is built correctly.
• Validation is the process of evaluating a product to ensure it meets the customer's requirements and needs.

• Verification is the process of evaluating whether a product is built correctly according to the specifications and requirements.

• Validation answers the question 'Are we building the right product?' w...read more
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Q2. What motivated you to apply for this role
Ans. 
Passion for ensuring quality standards and continuous improvement in engineering processes.
• Passion for quality assurance and process improvement

• Interest in utilizing engineering skills to enhance product quality

• Desire to contribute to a team focused on excellence

• Previous experience in quality control or process optimization
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A link was provided for the 15-minute online aptitude test.

90 minutes coding round. There were three problems. One for JavaScript and two for ReactJS

Q1. Mostly ReactJS questions were asked and a few Javascript questions were asked.
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Q1. Again a few react based questions then it was mostly discussion on the past experiences.
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Q1. A general discussion about the notice period, compensation, and information about the company's culture was provided.
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