Possible rephrased version: Discover Top Siemens Job Interview Questions and Tips for the 2023 Recruitment Season at IQCode

About Siemens

Siemens Limited is a technology company that specializes in the fields of industry, infrastructure, digital transformation, transportation, and electrical power transmission and generation. It serves as the flagship listed company of Siemens AG in India. The organization's corporate structure is well-suited to meeting industry demands for increased efficiency, quality, flexibility, and speed. With a diverse portfolio, a market-oriented organizational structure, global technology leadership, and strong local competency, the product-based company is well-positioned to assist the country in achieving long-term success.

Siemens offers career opportunities in almost every country on the planet. They are seeking new talent in the areas of engineering, manufacturing, research and development, IT, sales and marketing, and operations.

Siemens Recruitment Process

Interview Process:

Siemens Technical Interview Questions for Freshers and Experienced

Here is the first question you might be asked in a Siemens technical interview:

1. Can you define a web application?

A web application is a software application that is accessed through a web browser over the internet or an intranet network. It is also a client-server computer program where the client runs on a web browser and communicates with the server via HTTP. The purpose of a web application can be anything from conducting online transactions to sharing data and information to providing entertainment services.

Advantages and Disadvantages of DHCP

DHCP (Dynamic Host Configuration Protocol) has both pros and cons. Here are some advantages and disadvantages of using DHCP:


  • Efficient IP Address Management: DHCP allows for easy and efficient management of IP addresses within a network.
  • Automatic IP Configuration: DHCP automatically assigns IP addresses to connected devices, making it easier to add new devices to the network without having to manually configure IP addresses for each of them.
  • Reduced Network Administration: With DHCP, network administrators can quickly and easily configure network settings for multiple devices, reducing the need for manual configuration.


  • Single Point of Failure: If the DHCP server goes down, devices will not be able to obtain IP addresses, effectively taking the network offline.
  • IP Address Conflicts: DHCP can sometimes assign duplicate IP addresses to devices, causing conflicts and connectivity issues.
  • Security Risks: If unauthorized devices are added to the network, they can obtain IP addresses via DHCP and potentially access network resources.
Note: It's important to carefully weigh the advantages and disadvantages of DHCP before deciding to implement it in a network.

Bug Life Cycle Explanation

When a software defect is detected or reported, it goes through a series of stages before it is resolved. This series of stages is known as the Bug Life Cycle, which includes the following phases:

  • New: This is the first stage of bug life cycle when a bug is initially reported.
  • Open: In this phase, the bug is verified and reproduced by the development team.
  • Assigned: The bug is assigned to an available developer for fixing.
  • Fixed: Once the developer fixes the bug, it goes to this stage where the tester verifies its correctness.
  • Pending Retest: If the bug is fixed but still needs further testing, it moves to this phase.
  • Verified: When the bug is retested and confirmed as fixed, it moves to this stage.
  • Closed: Finally, the bug is closed when it is considered fully resolved and no longer requires any further attention.

The Bug Life Cycle process ensures that bugs are systematically tracked and resolved, ensuring a stable and reliable software product.


N/A (Explanation Only)

Understanding the Phases of the SDLC

The Software Development Life Cycle (SDLC) comprises several phases that enable the development of high-quality software. These phases include planning, analysis, design, development, testing, and maintenance. Each phase has its own set of activities and deliverables, and the success of the project depends on how well these phases are executed. It is essential to follow the SDLC phases to ensure that the software is developed within the set timeframe and budget, meets the user's requirements, and is of high quality.

Types of Kernel Objects

In the Windows operating system, there are several types of kernel objects, including:

  1. Events
  2. Mutexes
  3. Processes
  4. Threads
  5. File Objects
  6. Registry Keys
  7. Windows
  8. Access Tokens
  9. Named Pipes

Each of these kernel objects has its own unique characteristics and uses in the operating system, and understanding them is important for developing efficient and effective system-level programs.

Pointers in C++

Pointers in C++ are variables that store the memory addresses of other variables. They are widely used in programming for several purposes such as dynamic memory allocation, passing arguments to functions by reference and implementing data structures like linked lists and trees. Essentially, pointers allow us to manipulate the memory locations of variables directly, providing more control over program execution.

Understanding Stacks and Queues

A Stack is a data structure that follows the Last-In-First-Out (LIFO) principle. This means that the last item added to the stack is the first one to be removed. Stacks are commonly used in programming languages to keep track of function calls, undo/redo actions, and syntax parsing.

On the other hand, a Queue is a data structure that follows the First-In-First-Out (FIFO) principle. The first item added to the queue is the first one to be removed. Queues are commonly used in operating systems for scheduling tasks, job processing, and network traffic control.

The various OSI Layers

In the OSI (Open Systems Interconnection) model, there are seven layers that define network communication. These layers are:

  1. Physical Layer
  2. Data Link Layer
  3. Network Layer
  4. Transport Layer
  5. Session Layer
  6. Presentation Layer
  7. Application Layer

Each layer has its own set of protocols and functions that help in transmitting data from one network device to another. Understanding these layers is essential in networking and troubleshooting network issues.

Default Port for MySQL Server

The default port for MySQL server is 3306.

mysql -h hostname -P 3306 -u username -p password

Explanation of Virtual Memory

Virtual memory is a computer system feature that allows a computer to compensate for shortages in physical memory (RAM) by temporarily transferring pages of data from random access memory to disk storage. This is accomplished by utilizing a paging algorithm, which divides the virtual address space into pages that are loaded in and out of physical memory as needed. The principal advantage of virtual memory is that it allows a computer to run larger applications and multiple applications simultaneously than it could otherwise handle.

Understanding Parent/Child Selectors

In CSS, a parent/child selector is a way to target a specific element that is a child of another element. It involves using the ">" symbol in between the parent and child elements in the CSS code.

For example, if you have an HTML structure like this:

<div class="parent">
  <p class="child">This is some text</p>
  <p class="child">This is some more text</p>

You can use a parent/child selector to target only the "child" elements that are inside the "parent" element, like this:

.parent > .child {
  color: red;

This code would make the text inside the "child" elements red, but it would not affect any other elements on the page that are not children of the "parent" element.

Parent/child selectors can be a powerful tool for styling your HTML content in a precise and targeted way.

Explanation of the Unix Kernel

The Unix kernel is the central component of the Unix operating system and it manages the system's resources, including the CPU, memory, and input/output devices. It provides an abstraction layer between the hardware and the software, enabling the user programs to interact with the hardware in a uniform and consistent way.

The kernel is responsible for loading and executing the user programs, allocating memory space, scheduling tasks, managing the file system, and providing various system services like networking, interprocess communication, and security. It also handles the input/output operations, such as reading and writing files, communicating with devices, and controlling the flow of data.

The Unix kernel is designed to be modular and it can be extended through device drivers, modules, and system calls. It supports multi-user and multi-tasking environments, allowing multiple users to access the system simultaneously and running multiple programs at the same time.

Overall, the Unix kernel plays a critical role in the functioning of the Unix operating system and serves as the foundation for the many applications and services that make Unix a powerful and versatile platform for computing.

Differences between Arrays and Hash Tables

An array is an ordered collection of data elements identified by an index or a subscript. Each element can be accessed using its position in the array. On the other hand, a hash table is an unordered collection of key-value pairs. The values can be accessed using their associated keys.

In an array, elements are stored in consecutive memory locations and can be accessed using their index. In a hash table, the keys are hashed to find their corresponding memory location, which eliminates the need to search the entire collection for a specific key. This makes it much faster to retrieve data from a hash table compared to an array.

Another difference between arrays and hash tables is their memory usage. Arrays use contiguous memory locations, which makes it easy to allocate and deallocate arrays from memory. Hash tables, on the other hand, require more memory because they use linked lists to handle collisions when two keys are hash to the same memory location.

In summary, the choice between using an array and a hash table depends on the use case. If the collection needs to maintain a strict order and indexing is a critical factor, an array should be used. If fast access and retrieval of data are more important, a hash table may be the better choice.

Understanding Marshalling

Marshalling refers to the process of converting data from its native format into a format that can be transferred or stored for later use. This is typically done when data needs to be sent between different systems or technologies that use different native formats.

In the context of programming, marshalling is often used to convert objects or data structures into a format that can be transmitted using a specific communication protocol or stored in a certain type of database. This allows data to be easily shared and used across different applications and technologies.

Overall, marshalling plays an important role in enabling interoperability between different systems and ensuring that data can be shared and utilized efficiently.

Understanding System Calls

System calls are a fundamental part of operating systems. They allow user-level processes to request services from the operating system's kernel, such as input/output operations, process management, and memory allocation. System calls provide an interface for applications to interact with the operating system, which enables them to perform complex tasks without having to implement all the low-level details themselves. Without system calls, applications would have to execute their own kernel-level code to access the system resources, which is not only difficult but also a security risk. Therefore, system calls are essential for the proper functioning of an operating system and its related applications.

What is the daemon responsible for tracking events on your system?

In a Unix or Linux system, the daemon responsible for tracking events is called syslogd. It collects and stores messages from different sources and can also forward them to other systems if needed. The syslogd daemon is commonly used for system monitoring and troubleshooting, as it allows administrators to keep track of events and errors that occur on their servers.

Reversing a Singly Linked List

To reverse a singly linked list, we can use the following steps:

1. Initialize three pointers `previous`, `current`, and `next`. 2. Set `previous` and `current` pointers to `NULL` and `head`, respectively. 3. Traverse the list from the `head` to the end. 4. Set `next` pointer to the `next` node of the `current` pointer. 5. Update the `next` pointer of the `current` node to be `previous`. 6. Update the `previous` pointer to be the `current` node. 7. Update the `current` pointer to be the `next` node. 8. Repeat steps 4-7 until we reach the end of the list. 9. Set `head` to be the last node in the original list (which is now the first node in the reversed list).

Here's the implementation of the above algorithm in Python:

class Node:
    def __init__(self, value):
        self.value = value
        self.next = None
class LinkedList:
    def __init__(self):
        self.head = None
    def reverse(self):
        previous = None
        current = self.head
        while current is not None:
            next = current.next
            current.next = previous
            previous = current
            current = next
        self.head = previous

To reverse a linked list using the above code, simply create a `LinkedList` object, add some `Node`s to it, and call the `reverse` method of the `LinkedList` object.

Understanding the Difference between Manual and Automation Testing

Manual testing is a process of testing software applications manually, where testers manually execute test cases without any automation tools/scripts. While automation testing is the process of executing software test cases with the help of automation tools/scripts.

Manual testing is time-consuming and requires a lot of effort since every test step has to be performed manually. It is also prone to human errors and may not always be accurate. However, manual testing has the advantage of being able to provide accurate, reliable results, especially in cases where automation testing cannot be used.

On the other hand, automation testing is faster, more reliable, and more relevant when performing repetitive and frequent test cases, especially for large applications. Testers write test scripts that automate test cases, making it easier to test the software application repeatedly. The downside of automation testing is that it requires significant initial investment to build the testing automation framework, which can be costly for small projects.

Choosing between manual and automation testing depends on the project's scope, nature, and objectives. While manual testing is better suited for small projects or projects with a changing scope, automation testing is most appropriate for larger projects with a fixed scope that require the repeated execution of test cases.

What are pragma directives?

In programming, pragma directives are instructions that assist the compiler in performing specific tasks. They are special commands that are not part of the core language syntax but provide additional information to the compiler to optimize the code.

Pragma directives are commonly used to control compilation settings, manage memory usage, and enhance program performance. Some examples of pragma directives include #pragma once, #pragma pack, #pragma warning, #pragma inline, and #pragma message.

Overall, pragma directives provide a powerful toolset to programmers to fine-tune their code and achieve better results.

Deleting a Node in a Doubly-Linked List (DLL)

To delete a node in a doubly-linked list, we can follow these steps: 1. Check if the list is empty, if yes, return. 2. If the node to be deleted is the head node, update the head to the next node and set the previous link of the new head to NULL. 3. If the node to be deleted is the tail node, update the tail to the previous node and set the next link of the new tail to NULL. 4. If the node to be deleted is in between the head and tail nodes, update the next and previous links of the adjacent nodes to bypass the node to be deleted. 5. Free the memory allocated to the node to be deleted.

Here's an example code implementation in C++: void deleteNode(Node* nodeToDelete) { // if list is empty if (head == NULL) { return; } // if head node is to be deleted if (head == nodeToDelete) { head = nodeToDelete->next; head->prev = NULL; free(nodeToDelete); return; } // if tail node is to be deleted if (tail == nodeToDelete) { tail = nodeToDelete->prev; tail->next = NULL; free(nodeToDelete); return; } // if node is in between head and tail nodeToDelete->prev->next = nodeToDelete->next; nodeToDelete->next->prev = nodeToDelete->prev; free(nodeToDelete); }

Siemens Interview Preparation

If you have an upcoming interview with Siemens, here are some tips to help you prepare:

  • Research the company and its products/services.
  • Review the job description and make a list of your skills and experiences that match the requirements.
  • Practice answering common interview questions.
  • Dress professionally and arrive early.
  • Bring a copy of your resume and any relevant documents.
  • Prepare questions to ask the interviewer about the company and the job.
  • Be confident and enthusiastic during the interview.

With these tips in mind, you can feel more prepared and confident for your Siemens interview.

Find Integers within Strings

This problem requires finding all integers within given strings and returning their sum. The strings may contain letters, symbols, and white spaces, but only integers are to be included in the sum.

A function called


is implemented below that takes in a list of strings and returns the sum of their integers.

To solve this problem, the function uses a regular expression to search for any pattern matching integers within each string. When a match is found, the integer is extracted and added to a running total. The final total is returned by the function.

import re

def sum_integers_in_strings(string_list):
    Calculates the sum of all integers within given strings
    :param string_list: list of strings
    :return: sum of all integers within the strings
    total = 0
    # Regular expression pattern to match integers
    pattern = re.compile(r'\d+')
    for string in string_list:
        # Search for integers within the string
        matches = pattern.findall(string)
        # Add all found integers to the total
        for match in matches:
            total += int(match)
    return total

Frequently Asked Questions

1. Is the Siemens interview difficult?

How to Secure an Internship at Siemens?

If you're interested in getting an internship at Siemens, here are some tips to help you achieve your goal:

  1. Research Siemens: Before you apply for an internship, learn all you can about the company. Visit their website and social media profiles, read news stories about the company, and understand their values, products and services.
  2. Prepare your resume and cover letter: Your resume and cover letter should reflect your skills, experience and education that make you a strong fit for the internship you're applying for. Use keywords from the job description to tailor your application for Siemens.
  3. Apply online: Siemens accepts internship applications through their website. Browse their current job openings and apply for the internship that matches your interests and abilities.
  4. Tap into your network: Reach out to friends or family members who work at Sieemens, or use online networking platforms like LinkedIn to connect with current employees. They can provide inside information and possibly refer you for an internship.
  5. Prepare for the interview: If you're selected for an interview, do some research on the team you'll be interning with. Be ready to answer questions about your skills, experience and goals, and make sure to demonstrate your enthusiasm for the opportunity.
  6. Follow up: After your interview, follow up with a thank-you email to the interviewer. Reiterate your interest in the position and highlight some of the key points from the interview. This shows that you're serious about the opportunity and leaves a positive impression.
Note: Keep in mind that Siemens has many internships available in various fields, so choose the one that aligns best with your interests and skillset.

Description of Myself

In terms of personality, I would describe myself as friendly, reliable and determined. I am constantly seeking to learn new things and expand my knowledge. Additionally, I enjoy collaborating with others to achieve a common goal. When I encounter challenges, I remain calm and composed as well as persistent until a solution is found. I prioritize time management and organization, which allows me to handle multiple tasks efficiently and effectively. Overall, I am committed to personal and professional growth while maintaining a positive attitude.

How to Apply for a Job at Siemens

If you're interested in applying for a job at Siemens, follow these steps:

  1. Visit the Siemens career website.
  2. Create a profile or log in to your existing profile.
  3. Browse available job openings.
  4. Select a job opening to apply for.
  5. Follow the application instructions, which may include uploading a resume and cover letter.
  6. Submit your application.

After you submit your application, you may be contacted by Siemens for an interview. Good luck!

Technical Interview Guides

Here are guides for technical interviews, categorized from introductory to advanced levels.

View All

Best MCQ

As part of their written examination, numerous tech companies necessitate candidates to complete multiple-choice questions (MCQs) assessing their technical aptitude.

View MCQ's
Made with love
This website uses cookies to make IQCode work for you. By using this site, you agree to our cookie policy

Welcome Back!

Sign up to unlock all of IQCode features:
  • Test your skills and track progress
  • Engage in comprehensive interactive courses
  • Commit to daily skill-enhancing challenges
  • Solve practical, real-world issues
  • Share your insights and learnings
Create an account
Sign in
Recover lost password
Or log in with

Create a Free Account

Sign up to unlock all of IQCode features:
  • Test your skills and track progress
  • Engage in comprehensive interactive courses
  • Commit to daily skill-enhancing challenges
  • Solve practical, real-world issues
  • Share your insights and learnings
Create an account
Sign up
Or sign up with
By signing up, you agree to the Terms and Conditions and Privacy Policy. You also agree to receive product-related marketing emails from IQCode, which you can unsubscribe from at any time.