Indian IT services
L&T Technology Services Systems Engineer Interview: Rounds, Questions and Preparation
For Systems Engineer roles at companies like L&T Technology Services
What the job involves
Systems Engineers in Indian IT services support, maintain, and troubleshoot IT infrastructure, servers, networks, and enterprise applications for clients. They handle incident tickets, perform root-cause analysis, implement system upgrades, and ensure uptime as per service-level agreements. The role involves shift work and direct coordination with client teams and internal stakeholders.
Role and Technical Knowledge
- 1
What is the difference between a process and a thread in an operating system?
Explain that a process is an independent program in execution with its own memory space, while a thread is a lightweight unit within a process sharing memory. Mention context switching overhead.
- 2
Explain the OSI model layers and which layer a router and a switch operate on.
List all seven layers briefly. State that a router works at Layer 3 (Network) and a switch at Layer 2 (Data Link). Give a one-line reason for each.
- 3
What is Active Directory and how would you reset a user password?
Describe AD as a directory service for managing users, computers, and policies. Explain using Active Directory Users and Computers or PowerShell cmdlet Set-ADAccountPassword.
- 4
What are the key differences between Windows Server and Linux in a production environment?
Cover licensing cost, GUI vs command-line administration, package management, and typical use cases. Avoid bias; focus on trade-offs.
Practical Scenarios and Troubleshooting
- 5
A user reports that they cannot access a shared network drive. How would you troubleshoot this step by step?
Start with checking physical connectivity and IP configuration, then verify permissions and group membership, and finally test from another machine to isolate the issue.
- 6
A production server is running out of disk space. What steps would you take to resolve it without downtime?
Identify large files or logs using du or WinDirStat, archive or delete old logs, extend the volume if possible, and set up monitoring alerts. Mention change management approval.
- 7
How would you handle a critical incident ticket that is about to breach its SLA?
Prioritize communication: inform the client and internal team, escalate as per process, apply a temporary workaround if possible, and document everything for root-cause analysis.
- 8
What is the difference between a cold, warm, and hot site for disaster recovery?
Define each in terms of readiness and cost: cold has basic infrastructure, warm has partial equipment, hot is fully operational. Relate to recovery time objectives.
Behavioural and Situational Questions
- 9
Describe a time when you had to explain a technical issue to a non-technical person.
Use the STAR method. Highlight simplifying jargon, using analogies, and confirming understanding. Show patience and clarity.
- 10
How would you handle a situation where a client is angry about repeated system downtime?
Show empathy, listen without interrupting, acknowledge the impact, and commit to a clear action plan with timelines. Mention keeping the client updated.
- 11
Tell me about a time you worked in a team to solve a problem under time pressure.
Focus on your specific role, how you coordinated, and the outcome. Emphasize communication and staying calm.
- 12
How do you prioritize multiple support tickets with different urgency levels?
Explain using impact and urgency to assign priority, following ITIL or internal guidelines, and communicating realistic timelines to requesters.
HR and Company Fit
- 13
Are you comfortable working in rotational shifts, including night shifts, and on weekends?
Answer honestly and positively. Mention adaptability and willingness to support 24x7 operations if required.
- 14
Why do you want to join the IT services sector rather than a product company?
Highlight exposure to diverse clients, technologies, and processes. Show interest in learning service delivery and client management.
- 15
Where do you see yourself in three years in this role?
Focus on growing into a senior engineer or subject matter expert, gaining certifications, and taking on more responsibility. Avoid vague answers.
- 16
Are you willing to relocate to any city in India as per project requirements?
State your flexibility clearly. If you have constraints, mention them professionally but show openness to most locations.
Coding round
Systems Engineer interviews usually include a coding round. Practise planning the solution out loud, then review code the AI writes from your plan, in Python, Java, C++, C or JavaScript.
Ready to try it for real?
Take a timed test or talk through a mock interview for this role, then see your scores.
This is practice material for Systems Engineer roles, written with AI. It is not a list of questions L&T Technology Services or any other company has asked.