300+ Senior Systems Engineer Interview Questions and Answers

To create a component in React, you need to define a JavaScript function or class that returns a React element.

• Create a new file with a .jsx extension

• Define a function or class that returns a React element

• Export the function or class using the 'export' keyword

• Import the component in the file where you want to use it

• Render the component using the component name as a tag

The question is asking for a logical analysis based on a given condition.

• Understand the condition provided and its implications

• Identify the key components of the logic to be used

• Consider different scenarios and possible outcomes

• Use critical thinking and problem-solving skills to analyze the logic

To find hard disk failure, check for unusual noises, slow performance, frequent crashes, and run diagnostic tools.

• Listen for clicking, grinding, or whirring sounds

• Monitor for slow file access or system boot

• Look for frequent system crashes or blue screens

• Use diagnostic software like SMART to check disk health

Executor service is a framework that manages threads and provides an easy way to execute tasks asynchronously.

• Executor service is part of the java.util.concurrent package

• It provides a way to manage threads and execute tasks asynchronously

• Types of executor service include single-threaded, fixed thread pool, cached thread pool, and scheduled thread pool

• Example: ExecutorService executor = Executors.newFixedThreadPool(5);

• Example: executor.execute(new RunnableTask());

Yes, I have applied to TCS before.

• Yes, I have applied to TCS for a Junior Systems Engineer position last year.

• I have also applied for a Systems Analyst role at TCS two years ago.

• I am familiar with the application process and the company's recruitment procedures.

Use the New-SCVMCheckpoint cmdlet in PowerShell to create a checkpoint on SCVMM.

• Use the New-SCVMCheckpoint cmdlet in PowerShell

• Specify the VM name and checkpoint name as parameters

• Example: New-SCVMCheckpoint -VM 'VMName' -Name 'CheckpointName'

I have extensive experience with various printer hardware including installation, maintenance, and troubleshooting.

• Installed and configured printers for network and standalone use

• Performed routine maintenance such as replacing ink cartridges and cleaning print heads

• Diagnosed and resolved hardware issues such as paper jams and connectivity problems

• Worked with a variety of printer brands including HP, Canon, Epson, and Brother

ITIL processes are designed to align IT services with business needs and improve efficiency.

• ITIL processes provide a framework for managing IT services

• They help to ensure that IT services are aligned with business needs

• They improve efficiency and effectiveness of IT operations

• Examples of ITIL processes include incident management, change management, and problem management

Check if a number is a power of 2.

• A number is a power of 2 if it is greater than 0 and has only one bit set to 1.

• Use bitwise operations to check if the number is a power of 2.

• For example, 4 (100 in binary) is a power of 2, while 6 (110 in binary) is not.

Virtual machines can be deployed using virtualization software like VMware or Hyper-V.

• Choose a virtualization software like VMware or Hyper-V

• Create a new virtual machine instance

• Allocate resources such as CPU, memory, and storage

• Install an operating system on the virtual machine

• Configure network settings for the virtual machine

Thread starvation occurs when a thread is unable to access the CPU resources it needs to execute its tasks.

• Occurs when a thread is constantly preempted by higher priority threads, preventing it from running

• Can lead to performance degradation and delays in task completion

• Can be mitigated by adjusting thread priorities or implementing thread pooling

System administration & devops with containerization architecture

• System administration involves managing and maintaining computer systems and networks.

• DevOps is a software development approach that emphasizes collaboration and communication between development and operations teams.

• Containerization architecture involves packaging an application and its dependencies into a container for easy deployment and scalability.

• Tools like Docker and Kubernetes are commonly used for conta...read more

I have extensive experience with ManageEngine patching tool for efficient system updates and maintenance.

• Managed patching schedules for servers and workstations

• Ensured timely deployment of critical security patches

• Performed testing and validation of patches before deployment

• Generated reports on patch compliance and status

• Provided training and support to team members on patching tool usage

Attributes used in Requirements DOORS Module include priority, status, owner, and description.

• Priority - indicates the importance of the requirement

• Status - shows the current state of the requirement (e.g. open, closed)

• Owner - specifies the person responsible for the requirement

• Description - provides details about the requirement

Explanation of a complex requirement for a system

• Break down the requirement into smaller components

• Identify dependencies and constraints

• Consider potential risks and challenges

• Communicate effectively with stakeholders

• Provide detailed documentation

Anypoint Runtime Manager is a cloud-based tool for managing and monitoring Mule applications.

• It provides real-time visibility into application performance and health.

• It allows for easy deployment and scaling of applications.

• It offers centralized logging and alerting for quick issue resolution.

• It integrates with other Anypoint Platform tools for end-to-end application management.

• Example: Anypoint Runtime Manager can be used to monitor and manage a Mule application that integra...read more

STLC stands for Software Testing Life Cycle, which is a series of steps performed to ensure the quality of a software product. Bug life cycle refers to the stages a bug goes through from identification to resolution.

• STLC involves phases like requirement analysis, test planning, test design, test execution, and test closure.

• Bug life cycle includes stages like New, Assigned, Open, Fixed, Retest, Reopen, and Closed.

• STLC ensures that the software meets the specified requirements ...read more

I want to work for TCS because of its reputation for innovation, global presence, and opportunities for career growth.

• TCS is known for its cutting-edge technology solutions and innovation in the IT industry

• TCS has a strong global presence with clients in various industries around the world

• TCS offers opportunities for career growth and professional development through training programs and mentorship

• I admire TCS's commitment to diversity and inclusion in the workplace

JDK is Java Development Kit, which includes JRE along with development tools. JRE is Java Runtime Environment, which is required to run Java applications.

• JDK includes JRE along with development tools like compiler and debugger

• JRE is only required to run Java applications

• JDK is needed for Java development, while JRE is needed for running Java programs

An IP address is a unique numerical label assigned to each device connected to a computer network.

• IP addresses are used for communication and identification on a network

• There are two types of IP addresses: IPv4 and IPv6

• IPv4 addresses are written in the format xxx.xxx.xxx.xxx (e.g. 192.168.1.1)

• IPv6 addresses are written in a longer format with hexadecimal characters (e.g. 2001:0db8:85a3:0000:0000:8a2e:0370:7334)

OOPS concept in Java stands for Object-Oriented Programming System, which is a programming paradigm based on the concept of objects.

• OOPS focuses on creating objects that contain both data and methods to manipulate that data.

• Key principles of OOPS include Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation involves bundling data and methods that operate on the data into a singl...read more

OS stands for Operating System. DHCP is a protocol used to assign IP addresses to devices on a network.

• OS is the software that manages computer hardware and software resources.

• DHCP assigns IP addresses to devices on a network automatically.

• DHCP uses a client-server model, where the server assigns IP addresses to clients.

• DHCP leases IP addresses to clients for a specific amount of time.

• DHCP can also provide other network configuration information, such as DNS server addresses ...read more

To resolve a blue screen, start by identifying the error message and researching its cause. Update drivers, check hardware, and run diagnostic tests.

• Identify the error message displayed on the blue screen

• Research the error message to understand its cause

• Update drivers for hardware components

• Check hardware for any issues or conflicts

• Run diagnostic tests to identify any underlying problems

SQL Server features and troubleshooting steps

• SQL Server features include high availability, scalability, and security

• Troubleshooting steps for SQL Server issues involve identifying the problem, analyzing logs, and applying appropriate fixes

• Examples of troubleshooting steps include checking for connectivity issues, examining error messages, and optimizing query performance

Throttling refers to the process of limiting the amount of data or requests that can be sent or received within a certain time frame.

• Throttling is used to prevent overload on servers or networks.

• It can be implemented through software or hardware.

• Examples include API rate limiting and internet service providers limiting bandwidth.

• Throttling can also be used to intentionally slow down certain processes or devices.

• It is important to balance throttling with user experience and pe...read more

Answering SQL query writing question for Senior Systems Engineer position

• Understand the database schema and table relationships

• Use SELECT, FROM, WHERE, GROUP BY, HAVING, and ORDER BY clauses

• Use JOINs to combine data from multiple tables

• Use aggregate functions like COUNT, SUM, AVG, MAX, and MIN

• Use subqueries to filter data based on results of another query

To find duplicates in tables, use SQL queries with GROUP BY and HAVING clauses.

• Use GROUP BY clause to group rows with the same values

• Use HAVING clause to filter groups with more than one row

• Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name HAVING COUNT(*) > 1

To check open ports, use tools like netstat, nmap, or telnet

• Use netstat command to display all open ports on a system

• Use nmap tool to scan for open ports on a remote system

• Use telnet command to check if a specific port is open on a remote host

Connecting a printer via IP involves configuring network settings and adding the printer to your computer or network.

• Ensure the printer is connected to the network via Ethernet or Wi-Fi.

• Find the printer's IP address, usually available on the printer's display or through its settings menu.

• On your computer, go to 'Devices and Printers' or 'Printers & Scanners' in settings.

• Select 'Add a Printer' and choose 'Add a network, wireless or Bluetooth printer.'

• If the printer does not ap...read more

The registry in a PC stores configuration settings and options for the operating system and installed applications.

• Centralized database for system settings and configurations.

• Stores information about hardware, software, and user preferences.

• Example: Registry keys for installed applications can dictate how they behave.

• Facilitates system performance tuning and troubleshooting.

• Example: Modifying registry settings can enhance system performance or fix issues.

A domain is a group of computers and devices on a network that are administered as a unit with common rules and procedures.

• A domain allows for centralized management of users, computers, and resources.

• Domains use a hierarchical structure with a domain controller at the top.

• Domain controllers authenticate and authorize all users and computers in the domain.

• Examples of domains include Microsoft Active Directory domains and DNS domains.

365 Microsoft server is a cloud-based service that provides productivity tools and services for businesses.

• Cloud-based service

• Includes productivity tools like Word, Excel, PowerPoint

• Allows collaboration and communication through Teams and Outlook

• Offers storage solutions like OneDrive

• Provides security features like encryption and multi-factor authentication

Mule 4 is a major upgrade from Mule 3 with improved performance, simplified development, and enhanced security features.

• Mule 4 has a new simplified syntax for dataweave

• Mule 4 has a new error handling mechanism

• Mule 4 has improved performance with reduced memory usage

• Mule 4 has enhanced security features with TLS 1.2 support

• Mule 4 has a new deployment model with standalone and cluster modes

Collects in Java are interfaces and classes that provide a framework for working with collections of objects.

• Collects provide a way to store and manipulate groups of objects

• They include interfaces like List, Set, and Map, and classes like ArrayList and HashMap

• Collects offer methods for adding, removing, and accessing elements in the collection

• They also provide methods for sorting, searching, and filtering the collection

• Examples of usage include storing a list of names, a set ...read more

VMware is a virtualization software company that provides cloud computing and platform virtualization software and services.

• VMware is a leading provider of virtualization software and services

• It allows organizations to create virtualized environments for servers, storage, networking, and desktops

• VMware's products include VMware vSphere, VMware ESXi, and VMware Horizon

Spring Boot simplifies Java application development with rapid setup, embedded servers, and production-ready features.

• Rapid Development: Spring Boot reduces boilerplate code, allowing developers to focus on business logic. For example, using annotations like @RestController.

• Embedded Servers: It comes with embedded servers like Tomcat or Jetty, enabling easy deployment without external server configuration.

• Convention over Configuration: Spring Boot follows sensible defaults, m...read more

React is a JavaScript library for building user interfaces.

• React uses a virtual DOM to efficiently update the UI.

• It allows for reusable components and declarative programming.

• React can be used with other libraries and frameworks.

• It uses JSX syntax to combine HTML and JavaScript.

• React is maintained by Facebook and has a large community of developers.

• Examples of companies using React include Netflix, Airbnb, and Dropbox.

Battery swapping technology is a method of quickly replacing a depleted battery with a fully charged one in electric vehicles.

• Allows for faster recharging of electric vehicles compared to traditional charging methods

• Reduces downtime for electric vehicle drivers

• Promotes the use of electric vehicles by addressing range anxiety

• Examples: Tesla's battery swap stations, Gogoro's battery swapping network

Exceptions in Java are handled using try-catch blocks to catch and handle errors that occur during program execution.

• Use try-catch blocks to catch exceptions and handle them gracefully

• Use finally block to execute code regardless of whether an exception is thrown or not

• Use throw keyword to manually throw exceptions

• Use throws keyword in method signature to declare that the method may throw certain exceptions

slice() returns a shallow copy of a portion of an array into a new array, while split() splits a string into an array of substrings based on a specified separator.

• slice() does not modify the original array, while split() returns a new array of substrings

• slice() can take two parameters for start and end index, while split() takes a separator as a parameter

• Example: var arr = [1, 2, 3, 4, 5]; arr.slice(1, 3) returns [2, 3]; 'hello world'.split(' ') returns ['hello', 'world']

To troubleshoot Outlook issues, start by checking internet connection, restarting Outlook, updating software, checking email settings, and running diagnostics.

• Check internet connection to ensure Outlook can connect to server

• Restart Outlook to refresh the program

• Update Outlook software to the latest version

• Check email settings such as server configurations and account credentials

• Run diagnostics tools provided by Outlook to identify and fix issues

I have worked on a custom automation framework using Selenium and TestNG.

• The framework was designed to support both UI and API testing.

• It had a modular structure with reusable components.

• We used Jenkins for continuous integration and delivery.

• The framework was integrated with JIRA for test management and reporting.

• We also implemented parallel testing to save time and increase efficiency.

A gateway is a network node that connects two networks using different protocols.

• It acts as an entry or exit point for a network

• It translates protocols between networks

• It can be hardware or software-based

• Examples include routers, firewalls, and proxy servers

Charger is a device used to supply electrical energy to rechargeable batteries, while Lithium Ion batteries are a type of rechargeable battery commonly used in electronic devices.

• Chargers are designed to provide the correct voltage and current to recharge batteries safely.

• Lithium Ion batteries are lightweight and have a high energy density, making them popular in portable electronic devices.

• Overcharging or using the wrong charger can damage Lithium Ion batteries and pose a sa...read more

Oracle architecture is a multi-tiered architecture consisting of client, middle-tier, and database server.

• Oracle architecture is based on the client-server model.

• The client tier includes the user interface and application logic.

• The middle tier includes the application server and web server.

• The database server tier includes the Oracle database and related components.

• Oracle architecture supports distributed computing and high availability.

• Oracle architecture is highly scalable ...read more

Runtime fabric is a platform that enables the deployment and management of distributed applications.

• It provides a unified view of the distributed application

• It manages the deployment and scaling of application components

• It enables communication between application components across different environments

• Examples include MuleSoft's Anypoint Runtime Fabric and Microsoft's Azure Service Fabric

My current CTC is confidential and I prefer not to disclose it.

• I am not comfortable sharing my current salary details.

• I believe my skills and experience are more important than my current salary.

• I am open to discussing salary expectations for this role.