Tesco Interview Questions and Answers

Q1. What is your current role and responsibilities ?
Ans. 
I am currently working as a Senior Information Security Engineer at XYZ Company.
• Leading the implementation of security measures to protect the organization's computer systems and networks

• Conducting regular security assessments and audits to identify vulnerabilities and risks

• Developing and implementing security policies and procedures

• Responding to security incidents and conducting forensic investigations

• Providing securi...read more
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Q2. What you would like to know about this role at Tesco ?
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Q3. Tell me about yourself
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Q1. Perform Security Architecture review on the model provided.
Ans. 
Performing a security architecture review on the provided model.
• Identify potential security vulnerabilities in the architecture

• Evaluate the effectiveness of security controls in place

• Assess the overall security posture of the system

• Recommend improvements to enhance security measures
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Q2. Identify loop holes in the model given, identify what are the security controls that you will apply to make it better ?
Ans. 
Identifying loopholes in a security model and proposing security controls to improve it.
• Identify potential vulnerabilities such as weak authentication methods, lack of encryption, or inadequate access controls

• Implement strong authentication measures like multi-factor authentication to prevent unauthorized access

• Encrypt sensitive data both in transit and at rest to protect it from unauthorized access

• Implement strict acc...read more
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Q3. Devsecops related questions
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Q1. What is the domain that you are working in right now?
Ans. 
I am currently working in the domain of network security.
• Designing and implementing network security measures to protect the organization's systems and data

• Monitoring network traffic for potential security breaches

• Conducting regular security assessments and audits to identify vulnerabilities

• Responding to security incidents and implementing incident response procedures

• Implementing and managing firewalls, intrusion detec...read more
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Q2. What are the challenges that you face everyday ?
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Q3. SaaS vs on-prem. Which technology you would advice to use in terms of security ?
Ans. 
It depends on the specific security requirements and resources of the organization.
• Consider the sensitivity of the data being stored and processed.

• Evaluate the organization's budget and resources for maintaining security measures.

• Assess the expertise of the IT team in managing security for both SaaS and on-prem solutions.

• SaaS may offer better scalability and accessibility, but on-prem may provide more control over secu...read more
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Q4. What are your expectations from your next job ?
Ans. 
I expect my next job to provide challenging projects, opportunities for growth, a supportive team environment, and a competitive salary.
• Challenging projects that allow me to utilize my skills and knowledge

• Opportunities for professional growth and development

• A supportive team environment where collaboration is encouraged

• Competitive salary and benefits package

• Work-life balance and flexibility in scheduling
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Q1. Design highly scalable inventory management system
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Q2. Follow up questions on the design you have built
Ans. 
Discussing design considerations for a software project, focusing on scalability, maintainability, and user experience.
• Scalability: The design should handle increased load, e.g., using microservices to distribute traffic.

• Maintainability: Code should be modular, e.g., implementing design patterns like MVC for clear separation of concerns.

• User Experience: Prioritize intuitive UI/UX, e.g., conducting user testing to gathe...read more
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Q1. Explain all the SDLC cycle followed in your current project. Need to explain in detail.
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Q1. Tell me about yourslf
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Q2. How do you handle difficult employees
Ans. 
I address difficult employees through open communication, understanding their concerns, and providing constructive feedback.
• Initiate a one-on-one conversation to understand their perspective and challenges.

• Set clear expectations and goals to align their performance with team objectives.

• Provide constructive feedback regularly, focusing on behavior and outcomes rather than personal attributes.

• Encourage a supportive team ...read more
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Q1. How did you manage such a heavy workload simultaneously?
Ans. 
I prioritized tasks, utilized time management techniques, and maintained a positive attitude to handle a heavy workload effectively.
• Prioritized tasks by urgency and importance, ensuring critical tasks were completed first.

• Utilized a planner to schedule my day, breaking down larger tasks into manageable steps.

• Maintained open communication with my team to delegate tasks when necessary, ensuring no one was overwhelmed.

• Pra...read more
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Q2. How do you handle interactions with multiple people?
Ans. 
I prioritize effective communication and organization to manage interactions with multiple customers efficiently.
• I greet each customer warmly, ensuring they feel acknowledged and valued.

• I maintain eye contact and use active listening to understand their needs.

• If a customer has a question while I’m assisting another, I politely let them know I’ll be with them shortly.

• I use a notepad to jot down quick requests or questio...read more
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Q1. System Design with HLD
Ans. 
System Design with High Level Design (HLD) involves creating a high-level architecture for a software system.
• Identify the requirements and constraints of the system

• Break down the system into smaller components/modules

• Define the interactions between the components/modules

• Consider scalability, performance, and security aspects

• Create diagrams like UML diagrams to visualize the design
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Q2. Problem Solving Question
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Q1. Team Performance, App Optimisation, process,
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Q1. Security, Micro frontend, Team performance
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2 coding questions and a few MCQs

Q1. Asked to explain and optimise my solution from coding test
Ans. 
Optimizing a solution involves improving efficiency and reducing complexity in code.
• Analyze time complexity: For example, if your solution is O(n^2), consider using a hash map to reduce it to O(n).

• Use built-in functions: Leverage language-specific libraries that are optimized for performance.

• Avoid unnecessary computations: Cache results of expensive function calls if they are used multiple times.

• Consider data structure...read more
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Q1. Behavioral round. Asked about resume.
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Q1. General HR round and trying to find if you're a right fit for the company
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Q1. Explain the CI/CD setup in your project.
Ans. 
Our CI/CD setup automates code integration, testing, and deployment for faster and reliable software delivery.
• Version Control: We use Git for source code management, enabling collaboration and tracking changes.

• Continuous Integration: Jenkins is configured to automatically build and test code on every commit, ensuring early detection of issues.

• Automated Testing: We implement unit tests and integration tests using framew...read more
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Q2. How do you handle secrets in your pipeline?
Ans. 
Managing secrets in a pipeline involves secure storage, access control, and auditing to protect sensitive information.
• Use secret management tools like HashiCorp Vault or AWS Secrets Manager to store sensitive data securely.

• Implement environment variables to inject secrets into the pipeline without hardcoding them in the codebase.

• Utilize CI/CD tools' built-in secret management features, such as GitHub Actions Secrets or...read more
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