Nous Infosystems Senior Technical Lead Interview Questions and Answers

Q1. Pros and cons of micro service based application
Ans. 
Microservices offer scalability and flexibility but can increase complexity and require careful management.
• Pros: Scalability, flexibility, independent deployment, technology diversity

• Cons: Increased complexity, communication overhead, data consistency challenges

• Example: Netflix uses microservices to handle millions of requests daily

• Example: Amazon migrated to microservices to improve agility and scalability
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Q2. How application security is maintained
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Application security is maintained through regular security assessments, code reviews, penetration testing, and implementing security best practices.
• Regular security assessments to identify vulnerabilities

• Code reviews to ensure secure coding practices are followed

• Penetration testing to simulate attacks and identify weaknesses

• Implementing security best practices such as input validation, encryption, and access control

• Us...read more
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Q1. How monitoring tool elk works
Ans. 
ELK is a monitoring tool that stands for Elasticsearch, Logstash, and Kibana.
• ELK is a combination of three open-source tools: Elasticsearch, Logstash, and Kibana.

• Elasticsearch is a search and analytics engine that stores and indexes data.

• Logstash is a data processing pipeline that ingests, processes, and sends data to Elasticsearch.

• Kibana is a visualization tool that allows users to interact with data stored in Elastic...read more
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Q2. What to do for cost management on a cloud
Ans. 
For cost management on a cloud, monitor usage, optimize resources, use cost allocation tags, leverage reserved instances, and consider spot instances.
• Monitor usage regularly to identify any inefficiencies or unused resources

• Optimize resources by right-sizing instances and using auto-scaling

• Use cost allocation tags to track spending by project or department

• Leverage reserved instances for predictable workloads to save co...read more
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Q1. Related SDWAN migration
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Q1. What is microservice
Ans. 
Microservices are a software development technique where an application is composed of small, independent services that communicate over well-defined APIs.
• Microservices are small, independent services that work together to form an application

• Each microservice is responsible for a specific function or feature

• Microservices communicate with each other over well-defined APIs

• Microservices can be developed, deployed, and sca...read more
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Q2. Explain repository design pattern
Ans. 
Repository design pattern is a structural design pattern that separates the data access logic from the business logic in an application.
• It provides a way to access data from a data source without exposing the underlying data access code to the business logic.

• It helps in achieving separation of concerns by keeping data access code in a separate layer.

• Commonly used in applications where data needs to be accessed from mul
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Design a Distributed Cache

Basic college practical programs

Q1. Core Java in detail is must
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Q2. JSP, database, sql, is must
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Q3. Architecture understanding should be good
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Q4. Able to work standalone
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Q5. Weblogic, jboss, qebservicea
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Q6. Good personal and logical skill
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Psa and easy to solve questions

Easy gd impact on metros

Knowledge based question

Q1. Open For rotational Shift
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Q2. Available for Virtual Interview.
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Q3. AWS services, GIT, Ansible, Chef
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Q1. Project work experience
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Q2. CICD setup Process
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Q1. Package Discussion
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Q1. 1. How to do T24 installation 2. Jboss Installation 3. T24 Update Installation
Ans. 
T24 and JBoss installation and T24 update installation process.
• T24 installation requires setting up the database, application server, and T24 environment variables.

• JBoss installation involves downloading and installing the JBoss application server, configuring the server, and deploying T24 on it.

• T24 update installation involves applying the update package to the existing T24 installation.

• Ensure that all prerequisites a...read more
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Q1. 1. Azure Cloud Questions 2. Jboss Setup 3. Managerial Questions
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Q1. 1. Asked some questions from resume
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