Pertinax Solutions Interview Questions and Answers

1. Was asked to write code to develop a simple API and then unit test it.
2. To write a function that continuously monitors data from Kafka and performs quality validations on it.

Q1. Distributed systems design techniques
Ans. 
Distributed systems design techniques involve strategies for ensuring scalability, fault tolerance, and consistency in a network of interconnected nodes.
• Use of replication for fault tolerance and load balancing

• Partitioning data to improve performance and scalability

• Consensus algorithms like Paxos or Raft for ensuring consistency

• Message passing protocols like gRPC or Kafka for communication between nodes
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REST API design, Scalability, DB scalability, query improvements.

Q1. Employment history
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Q1. Why are you looking for a change?
Ans. 
Looking for new challenges and growth opportunities.
• Seeking a more challenging role to enhance my skills and knowledge.

• Interested in working with new technologies and frameworks.

• Want to be part of a dynamic and innovative team.

• Seeking better career prospects and growth opportunities.

• Looking for a company with a strong focus on professional development.
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Q2. Tell me about yourself.
Ans. 
I am an experienced Senior Front end Developer with a passion for creating user-friendly and visually appealing websites.
• Over 8 years of experience in front end development

• Proficient in HTML, CSS, JavaScript, and various front end frameworks

• Strong understanding of responsive design and cross-browser compatibility

• Experience with version control systems like Git

• Ability to collaborate with designers and backend developers...read more
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Q1. Project details and other
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Q1. Skill sets and work profile
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In aptitude test,there is multiple questions are there in subject wise and reasoning,and subtopics like ages,clocks, distance like these types questions are there and java problem questions also there

Q1. In technical round mainly asked about your project and so many questions are asked in Java,sql and javascript
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Q2. Oops in Java Patterns in Java JDK,JRE,JVM MVC Array questions strings in Java This,super keywords Java problems like palindrome, prime number,and so many problems and logics Why java is platform independen...read more
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Questions asked in a Full Stack Software Developer interview
• Questions on OOPs concepts, design patterns, and MVC architecture

• Array and string manipulation in Java

• Understanding of JDK, JRE, and JVM

• Usage of 'this' and 'super' keywords

• Solving Java problems like palindrome, prime number, etc.

• Explanation of Java's platform independence

• SQL queries and commands
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Q3. MVC in Java Design patterns in Java
Ans. 
MVC is a design pattern used in Java for separating concerns. Java has many design patterns like Singleton, Factory, etc.
• MVC separates Model, View, and Controller for better organization and maintenance

• Singleton ensures only one instance of a class is created

• Factory pattern creates objects without exposing the instantiation logic to the client

• Observer pattern allows objects to be notified of changes in other objects

• Dec...read more
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Q4. Explain Jdbc connectivity Spring boot
Ans. 
JDBC is a Java API for connecting to databases. Spring Boot provides auto-configuration for JDBC.
• JDBC stands for Java Database Connectivity.

• It is a Java API for connecting to databases.

• Spring Boot provides auto-configuration for JDBC, making it easy to set up database connections.

• JDBC can be used to execute SQL statements and retrieve results.

• Example: DriverManager.getConnection(url, username, password);
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Q1. Hr asked only for your background and life styles and some basic questions about company
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It is all about reasoning.

GD is all about how to build Business Strategy in short term

Q1. Introduce Your self
Ans. 
Experienced housekeeping supervisor with 5+ years in hospitality industry. Skilled in managing staff, inventory, and ensuring cleanliness standards are met.
• Over 5 years of experience in housekeeping supervision

• Strong leadership and communication skills

• Proficient in managing inventory and scheduling

• Ensuring high cleanliness standards are met

• Experience in training new staff members
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Q2. Where do you see after 5 years
Ans. 
In 5 years, I see myself as a successful Housekeeping Supervisor leading a team of dedicated staff and implementing innovative strategies for efficiency.
• Leading a team of housekeeping staff to ensure high standards of cleanliness and organization

• Implementing new technologies or processes to improve efficiency and productivity

• Continuing to develop my skills and knowledge in housekeeping management through training and e...read more
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Q3. Salary expectation
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Q4. Rate yourself within 10
Ans. 
I would rate myself an 8 out of 10 as a Housekeeping Supervisor.
• I have strong leadership skills and can effectively manage a team of housekeepers.

• I am detail-oriented and ensure that all cleaning tasks are completed to a high standard.

• I have excellent communication skills and can effectively communicate with both staff and guests.

• I am knowledgeable about cleaning products and techniques to ensure efficient and thorough
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Q5. Why are you join this institute
Ans. 
I am joining this institute because of its reputation for excellence in housekeeping management.
• I am impressed by the institute's track record of producing top-notch housekeeping supervisors.

• I believe the institute's training program will enhance my skills and knowledge in housekeeping management.

• I am excited about the opportunities for career advancement that this institute can provide.
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100 questions in 60 mins. Try to solve which your are confident. Negitive marking is there

Q1. 1. Parameter of design
Ans. 
Parameters of design refer to the specific factors that are considered when creating a product or system.
• Parameters of design include things like size, shape, materials, and functionality.

• These parameters are determined by the intended use of the product or system, as well as any constraints or limitations.

• For example, when designing a car, parameters of design might include the number of seats, the type of engine, and...read more
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Q2. 2. Why Hardening is done? Procedure of casting?
Ans. 
Hardening is done to increase the strength and durability of materials. Casting involves pouring molten metal into a mold.
• Hardening is a heat treatment process that involves heating and cooling a material to increase its strength and durability.

• Casting is a manufacturing process in which a liquid material, such as molten metal, is poured into a mold and allowed to solidify.

• The procedure of casting involves preparing th...read more
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Q1. Tell me something about yourself
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Q2. Tell me about your family background
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Q1. Different between rank and dense_rank
Ans. 
Rank assigns unique rank to each row, while dense_rank assigns consecutive rank to each row.
• Rank function assigns unique rank to each row based on the order specified in the ORDER BY clause.

• Dense_rank function assigns consecutive rank to each row based on the order specified in the ORDER BY clause.

• Rank function leaves gaps in the ranking sequence if there are ties, while dense_rank function does not.

• Rank function retur...read more
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