Systems Engineer

Description

Join our infrastructure team to design, implement, and maintain enterprise systems. You will manage servers and operating systems, automate system tasks, troubleshoot technical issues, and ensure system reliability. The role requires experience with Linux and Windows systems, scripting (Bash, PowerShell, Python), virtualization, and configuration management. You will document systems, implement monitoring, participate in capacity planning, and support application deployments. Versatility and strong troubleshooting skills are essential.

Interview Questions (126)

Q1Explain the differences between TCP and UDP protocols.
Technical
Q2How does DNS work and what happens when you type a URL in the browser?
Technical
Q3Explain the differences between mutex and semaphore.
Technical
Q4Tell me about your experience with infrastructure automation.
Experience
Q5What are race conditions and how do you prevent them?
Technical
Q6Explain the concepts of threads, processes, and coroutines.
Technical
Q7How does virtual memory work?
Technical
Q8What is the difference between thread-safe and non-thread-safe code?
Technical
Q9What is the difference between static and dynamic linking?
Technical
Q10What is the difference between buffering and caching?
Technical
Q11Describe a time when you faced a significant challenge in a project. How did you overcome it?
Behavioral
Q12How do automation, robotics, and process optimisation work together?
Technical
Q13What were some challenges you faced while developing the AI-driven models for cost estimation at L&T Headquarters, and how did you overcome them?
Behavioral
Q14If you were tasked with optimizing an electrical system design for a new project, what steps would you take to ensure efficiency and safety?
Situational
Q15What motivated you to pursue a career in software engineering, and how do you see your skills contributing to our team?
Motivational
Q16How would you approach designing a new electrical control system for a renewable energy project?
Situational
Q17What data structures would you choose to implement a priority queue and why?
Technical
Q18What methodologies did you apply while analyzing system logs in your cybersecurity capstone project, and what were the outcomes?
Experience
Q19Can you describe a time when you resolved a critical incident in a network environment?
Experience
Q20How do you approach the installation and configuration of new computing equipment?
Technical
Q21What motivates you to implement technological solutions that improve user satisfaction?
Motivational
Q22Can you describe a time when you resolved a critical incident in your previous role?
Behavioral
Q23What steps do you take to ensure the stability and performance of a network?
Technical
Q24What specific tools or methods do you use for diagnosing technical issues?
Experience
Q25If you encountered a major network outage, what immediate actions would you take?
Situational
Q26What motivates you to work in IT support and network management?
Motivational
Q27What is Software Engineering?
Other
Q28What are the Characteristics of Software?
Technical
Q29Difference between an EXE and DLL?
Technical
Q30Why is Modularization important in Software Engineering?
Technical
Q31What is Cohesion and Coupling?
Technical
Q32What is Reverse Engineering?
Technical
Q33What is Concurrency, and How to Achieve it?
Technical
Q34How to Find the Size of a Software Product?
Technical
Q35Can you design and write code?
Technical
Q36What are network devices? Explain their types.
Technical
Q37What are the different types of computer networks?
Technical
Q38What is a network topology? Explain its types.
Technical
Q39Explain the OSI model, its seven layers, the devices used at each layer, and how it differs from the TCP/IP model.
Technical
Q40What happens to a data packet as it moves through the OSI model?
Technical
Q41Explain the TCP three-way handshake and why TCP uses three handshakes instead of two.
Technical
Q42Explain TCP connection termination, the TIME_WAIT state, and what happens if the final ACK is lost.
Technical
Q43What are TCP sequence numbers and acknowledgment numbers? How do they prevent duplicate packets?
Technical
Q44Explain ARP.
Technical
Q45What is the difference between MAC address and IP address?
Technical
Q46Explain TCP retransmission, Retransmission Timeout (RTO), Fast Retransmit, and Fast Recovery.
Technical
Q47What is the difference between the congestion window (cwnd) and the receive window (rwnd)?
Technical
Q48Explain TCP congestion control, including Slow Start, Congestion Avoidance, and AIMD.
Technical
Q49What is Explicit Congestion Notification (ECN)? How does it improve network performance?
Technical
Q50Compare Tahoe, Reno, New Reno, and Cubic TCP.
Technical
Q51How does TCP distinguish between packet loss caused by congestion and wireless transmission errors?
Technical
Q52Compare Stop-and-Wait, Go-Back-N, and Selective Repeat protocols.
Technical
Q53Why must the Selective Repeat window size be at most half the sequence number space?
Technical
Q54What is the Bandwidth-Delay Product (BDP), and How Does Pipelining Improve Network Performance?
Technical
Q55Compare Distance Vector and Link-State Routing Protocols.
Technical
Q56Why Does RIP Suffer from the Count-to-Infinity Problem, and How Do Split Horizon and Route Poisoning Solve It?
Technical
Q57Why Does OSPF Converge Faster Than RIP? Explain the Dijkstra Algorithm Used in OSPF.
Technical
Q58What is route flapping, and how do routing protocols minimize its impact?
Technical
Q59Explain BGP and Why It Is Called a Path-Vector Protocol.
Technical
Q60What are CIDR (Route Aggregation) and Equal-Cost Multi-Path (ECMP), and Why Are They Useful?
Technical
Q61Differentiate Between Interior Gateway Protocols (IGPs) and Exterior Gateway Protocols (EGPs).
Technical
Q62What is route redistribution in computer networks?
Technical
Q63Why Are Private IP Addresses Not Routable on the Internet?
Technical
Q64What is a Default Gateway?
Technical
Q65What is DHCP and explain the DORA process?
Technical
Q66What is APIPA and why is it important?
Technical
Q67Why Does IPv6 Eliminate the Need for NAT?
Technical
Q68Explain IPv6 Neighbor Discovery and How It Replaces ARP.
Technical
Q69Compare CIDR and VLSM.
Technical
Q70How Does a Switch Learn MAC Addresses, and What Happens with an Unknown Destination MAC Address?
Technical
Q71Differentiate between store-and-forward switching and cut-through switching.
Technical
Q72What is the difference between a hub, switch, and router?
Technical
Q73How do Layer 3 switches differ from routers, and when would you choose one over the other?
Technical
Q74What is a collision domain and a broadcast domain?
Technical
Q75Explain the Spanning Tree Protocol (STP) and the Role of the Root Bridge.
Technical
Q76What is VLAN Tagging (IEEE 802.1Q), and Why Is It Used?
Technical
Q77What is PoE (Power over Ethernet)?
Technical
Q78Why Is DNS Hierarchical Instead of Centralized?
Technical
Q79Explain What Happens When You Enter a URL in a Browser.
Technical
Q80Compare HTTP/1.1, HTTP/2, and HTTP/3.
Technical
Q81Why Does ICMP Not Use TCP?
Technical
Q82Compare Packet Switching and Circuit Switching.
Technical
Q83Differentiate between synchronous and asynchronous transmission.
Technical
Q84What are MTU and Path MTU Discovery (PMTUD)?
Technical
Q85Why is Manchester encoding called self-clocking? Compare it with NRZ.
Technical
Q86What is RTT (Round Trip Time)?
Technical
Q87What is propagation delay and transmission delay? How do they affect network latency?
Technical
Q88Why Is UDP Preferred for Streaming and Online Gaming Despite Being Unreliable?
Technical
Q89Differentiate between Bluetooth, Wi-Fi, and ZigBee.
Technical
Q90What are the Advantages of Fiber Optics?
Technical
Q91Can IP Multicast Be Load-Balanced?
Technical
Q92What is subnetting, and why is it important?
Technical
Q93Describe the function of ARP.
Technical
Q94What is a MAC address? How is it different from an IP address?
Technical
Q95What is NAT and how does it work?
Technical
Q96How does a switch operate at Layer 2 of the OSI model?
Technical
Q97How does link aggregation improve network performance?
Technical
Q98What is the administrative distance of OSPF?
Technical
Q99What port does BGP use?
Technical
Q100What does DHCP option 150 do?
Technical
Q101What do 2,000 to 3,000 users need from the network?
Motivational
Q102What tools do you use for troubleshooting?
Technical
Q103How can you discover network topology?
Technical
Q104A gateway works in which layer of the OSI model?
Technical
Q105What is the difference between forward and reverse lookup?
Technical
Q106What is a network and how does data move across it?
Technical
Q107Difference between TCP and UDP — when do you use each?
Technical
Q108Walk me through what happens when you type google.com in a browser.
Technical
Q109How does your agent know it is finished?
Technical
Q110The server restarts at step fourteen of twenty. What happens to the task?
Situational
Q111What previous experience and projects have you completed?
Experience
Q112What are your C programming skills?
Technical
Q113What is your understanding of Linux basics?
Technical
Q114Can you explain kernel driver programming?
Technical
Q115What is the difference between RISC and CICS architecture?
Technical
Q116Tell me about your previous experience and projects that you did.
Experience
Q117Can you describe what's a scheduler?
Technical
Q118What is your experience with real-time operating systems?
Experience
Q119How do you approach debugging in embedded systems?
Technical
Q120What tools do you use for embedded system development?
Technical
Q121How do you ensure code quality in your embedded projects?
Technical
Q122What challenges have you faced in embedded development?
Behavioral
Q123How do you prioritize tasks when working on embedded projects?
Situational
Q124What motivates you to work in embedded systems?
Motivational
Q125How do you stay updated with the latest trends in embedded systems?
Other
Q126What is your experience with hardware-software integration?
Experience