40+ Nihmath Ply Interview Questions and Answers

Program to reverse a string without using string library functions.

• Create a function that takes an input string as an array of characters.

• Use two pointers, one at the beginning and one at the end of the array, swap the characters and move the pointers towards each other until they meet.

• Handle edge cases like empty string or strings with odd number of characters.

Storage classes in C determine the scope, lifetime, and visibility of variables.

• Storage classes include auto, register, static, extern, and typedef.

• Auto variables are stored on the stack and have local scope.

• Register variables are stored in CPU registers for faster access.

• Static variables have global scope but limited visibility.

• Extern variables are declared in one file and can be used in another.

• Typedef is used to create new data types for better code readability.

Program to implement linked list using dynamic memory allocation

• Allocate memory for each node using malloc() function

• Use pointers to link nodes together

• Free memory using free() function to avoid memory leaks

Structures are used to store different data types under one name, while unions allow different data types to be stored in the same memory location.

• Structures allocate memory for each member separately, while unions share the same memory location for all members.

• Structures are used when all members need to be accessed independently, while unions are used when only one member needs to be accessed at a time.

• Example: struct Person { char name[20]; int age; }; union Data { int num...read more

Create a Django project, deploy with Docker and Git

• Install Django and Docker

• Create a new Django project

• Initialize a Git repository

• Create a Dockerfile for the Django project

• Build and run the Docker image

• Push the code to a Git repository

Memory layout in a C binary refers to how different types of data are stored in memory.

• Memory layout includes sections like text (code), data, bss, heap, and stack.

• Global variables are stored in data section, uninitialized global variables in bss section.

• Dynamic memory allocation using malloc() and calloc() is stored in heap section.

• Local variables and function call information are stored in stack section.

• Example: int x = 5; is stored in data section, int y; is stored in bss ...read more

5S is a methodology for organizing a workplace for efficiency and effectiveness. Check sheets are used to track data and ensure processes are followed.

• 5S stands for Sort, Set in order, Shine, Standardize, Sustain

• Check sheets are used to collect data and track progress in a visual manner

• Regular audits are conducted to ensure 5S and check sheets are properly maintained

• Example: Using color-coded labels for organizing tools in a workshop

• Example: Using a check sheet to track the n...read more

Answers to questions related to Senior System Administrator role

• To stop IIS service, open Services console and stop the World Wide Web Publishing Service

• CDN stands for Content Delivery Network, it is a distributed network of servers that deliver web content to users based on their geographic location

• 502 bad gateway error occurs when a server acting as a gateway or proxy receives an invalid response from an upstream server

• FSMO stands for Flexible Single Master Operations, ther...read more

Universal motors are used for AC and DC power while series motors are used for DC power only.

• Universal motors have a high starting torque and can operate at high speeds, making them suitable for appliances like vacuum cleaners and power tools.

• Series motors have a high starting torque and can operate at low speeds, making them suitable for applications like electric trains and cranes.

• Universal motors have brushes that wear out quickly due to the high speeds and frequent use, w...read more

The candidate has experience in manual soldering and line leading. They have led 2 projects and have a hobby of singing.

• Experienced in manual soldering

• Has led 2 projects as a line leader

• Hobby of singing

Industrial design is the process of designing products that are both functional and aesthetically pleasing.

• Industrial design focuses on creating products that are user-friendly and visually appealing.

• It involves considering factors such as ergonomics, materials, and manufacturing processes.

• Industrial designers often work closely with engineers and marketers to bring products to market.

• Examples of well-designed products include Apple's iPhone, Tesla's electric cars, and Dyson'...read more

I have experience in designing and implementing LED driving circuits for various projects.

• Designed and implemented an LED driving circuit for a smart home lighting system

• Worked on a project to develop an LED display for a digital signage solution

• Designed a high-power LED driver for a medical device

• Implemented an LED driving circuit for an automotive lighting system

LDO and buck are voltage regulators used to convert high voltage to low voltage.

• LDO stands for Low Drop-Out and is used for small voltage drops

• Buck is a type of switching regulator that uses inductor and capacitor to step down voltage

• LDO is simpler and cheaper than buck

• Buck is more efficient than LDO for larger voltage drops

• Example of LDO: LM7805

• Example of Buck: LM2675

Protocol stack in telecom refers to the set of communication protocols used to transmit data over a network.

• The protocol stack is divided into layers, each with its own set of protocols.

• The layers include physical, data link, network, transport, session, presentation, and application.

• Each layer communicates with the layer above and below it, and each layer adds its own header to the data being transmitted.

• Examples of protocols used in the protocol stack include TCP, IP, HTTP,...read more

Wave soldering is a soldering process used in electronics manufacturing to solder through-hole components on a PCB.

• Wave soldering involves passing a PCB over a wave of molten solder to solder the components in place.

• The wave is created by a pump that circulates the molten solder in a tank.

• Components are prepped with flux to ensure proper soldering.

• Wave soldering is commonly used for through-hole components in mass production.

• It is a faster and more efficient soldering method ...read more

Cause and effect diagram is a tool used to identify and analyze the potential causes of a problem.

• Also known as fishbone diagram or Ishikawa diagram

• Used in quality control and process improvement

• Identifies root causes of a problem by breaking it down into smaller categories

• Example: A company uses a cause and effect diagram to identify the reasons for low sales. Categories include product, price, promotion, place, people, and process.

• The diagram helps the company identify that...read more

7qc tools are used in quality to identify and solve problems in a systematic way.

• Helps in identifying root cause of problems

• Provides a structured approach to problem-solving

• Improves quality and reduces defects

• Increases efficiency and productivity

• Examples include Pareto chart, fishbone diagram, control chart

Validation is the process of evaluating a system or component during or at the end of the development process to determine whether it satisfies specified requirements.

• Validation ensures that the product meets the customer's needs and requirements.

• It is a dynamic testing process that involves executing the software with test data and verifying the output.

• Validation is done after verification to ensure that the product is fit for its intended use.

• Examples of validation include ...read more

ORAN stands for Open Radio Access Network. It is a concept that aims to disaggregate traditional mobile network elements and promote interoperability and innovation.

• ORAN is a concept in the telecommunications industry.

• It aims to separate hardware and software components of mobile networks.

• ORAN promotes interoperability and innovation by allowing different vendors' equipment to work together.

• It enables operators to mix and match components from different vendors.

• ORAN is based ...read more

Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not.

• Testing is done to identify defects or errors in the system.

• It involves executing a system or its component(s) with a set of test cases.

• The goal of testing is to ensure that the system meets the specified requirements and works as expected.

• Testing can be done manually or using automated tools.

• Types of testing include functional testi...read more

There are several types of transformers used in electrical engineering.

• Power transformers

• Distribution transformers

• Instrument transformers

• Auto transformers

• Isolation transformers

• Step-up and step-down transformers

• Three-phase transformers

• Toroidal transformers

• Ferrite core transformers

• Air core transformers

Async/await is a feature in programming that allows asynchronous code to be written in a synchronous manner.

• Async/await is a way to write asynchronous code in a more synchronous style.

• It is used in languages like JavaScript to handle asynchronous operations.

• Async functions return a Promise, which allows them to be awaited.

• Await keyword is used to pause the execution of an async function until a Promise is settled.

Types of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.

• Unit testing: Testing individual components or modules of a software.

• Integration testing: Testing how different modules work together.

• System testing: Testing the entire system as a whole.

• Acceptance testing: Testing to ensure the system meets the requirements of the stakeholders.

• Regression testing: Testing to ensure that new code changes do not adversely affec...read more

Troubleshooting involves identifying and resolving issues to ensure smooth functioning of systems.

• Identify the root cause of the error by analyzing logs, code, and system behavior.

• Replicate the issue in a controlled environment to understand its impact.

• Use debugging tools and techniques to pinpoint the exact location of the error.

• Implement a fix or workaround based on the analysis and testing.

• Verify the fix by retesting the system to ensure the error is resolved.

Wave soldering is a soldering process used in electronics manufacturing to solder through-hole components onto a printed circuit board.

• Wave soldering involves passing a PCB over a wave of molten solder to solder the components in place.

• The wave is created by a pump that circulates the molten solder in a tank.

• Components are prepped with solder paste before being placed on the PCB for wave soldering.

• Wave soldering is commonly used for high-volume production of PCBs in electroni...read more

I expect a salary of 3LPA from VVDN.

• Based on my research and experience, I believe a salary of 3LPA is reasonable for a Junior Engineer Production position at VVDN.

• I am open to negotiation and would be willing to discuss the salary further.

• I am more interested in the growth opportunities and learning experiences that VVDN can offer me.

• I have researched the industry standards and believe that 3LPA is a fair compensation for my skills and qualifications.

Middleware and filters are components in ASP.NET Core that allow you to handle requests and responses in the pipeline.

• Middleware are components that are added to the request pipeline to handle requests and responses.

• Filters are used to implement cross-cutting concerns like logging, exception handling, and authorization.

• Middleware can be used to modify the request or response before it reaches the controller action.

• Filters can be applied globally, at the controller level, or a...read more

Sizeof operator in C returns the size of a variable or data type in bytes.

• Sizeof operator is evaluated at compile time

• Sizeof operator can be used with variables, data types, or expressions

• Example: sizeof(int) returns 4 on a 32-bit system

Wave soldering is a process used in electronics manufacturing to solder through-hole components on a PCB by passing it over a wave of molten solder.

• Wave soldering is a cost-effective and efficient method for soldering through-hole components on a PCB.

• Regular maintenance of the wave soldering machine is essential to ensure consistent soldering quality.

• Maintenance tasks may include cleaning the solder wave, checking temperature settings, inspecting conveyor belts, and replacing...read more

I can provide references from previous managers and colleagues who can speak to my leadership skills and technical expertise.

• Provide contact information for previous managers or colleagues who can vouch for your leadership abilities

• Include specific examples of successful projects you have led

• Highlight any positive feedback or recognition you have received from management or peers

To solve business approach, focus on understanding the goals and needs of the business, aligning technology solutions with those goals, and continuously improving processes.

• Understand the business goals and needs

• Align technology solutions with business goals

• Continuously improve processes

• Collaborate with stakeholders

• Implement quality assurance practices

A series motor is a type of electric motor where the field windings are connected in series with the armature windings.

• The torque of a series motor is proportional to the square of the current flowing through it.

• Series motors are used in applications where high starting torque is required, such as in electric trains and cranes.

• They are not suitable for applications where constant speed is required, as their speed varies with the load.

• Series motors are also known as universal ...read more

A compound motor is a type of electric motor that combines the features of a series motor and a shunt motor.

• It has both a series field winding and a shunt field winding

• It provides high starting torque and good speed regulation

• It is commonly used in applications such as elevators, cranes, and hoists

Implementing CI/CD involves automating the process of integrating code changes and deploying them to production.

• Set up a version control system like Git to track changes

• Use a continuous integration tool like Jenkins to automatically build and test code

• Implement automated testing to ensure code quality

• Use a continuous deployment tool like Ansible or Docker to deploy code changes

• Integrate monitoring and alerting to track performance and issues

A step-down transformer is a type of transformer that reduces the voltage level from primary to secondary winding.

• It has more turns in the primary winding than in the secondary winding

• It is used to step down the voltage level in power transmission and distribution

• It is commonly used in electronic devices to convert high voltage to low voltage

• Examples include power adapters for laptops and mobile phones

Regular communication through emails, calls, meetings and reports.

• Schedule regular meetings with the customer to discuss progress and updates.

• Send weekly or monthly reports summarizing the progress made.

• Communicate through emails and calls to keep the customer informed about any changes or issues.

• Provide demos or presentations to showcase the work done.

• Be transparent and honest about any delays or challenges faced.

• Ask for feedback and suggestions from the customer to ensure t...read more

Types of testing include functional, non-functional, manual, automated, regression, performance, and security testing.

• Functional testing ensures that the software meets the specified requirements.

• Non-functional testing checks the software's performance, usability, and security.

• Manual testing is done by a human tester, while automated testing is done by software.

• Regression testing ensures that changes to the software do not break existing functionality.

• Performance testing chec...read more

Handling a project involves effective planning, communication, and coordination to ensure successful completion.

• Create a detailed project plan outlining objectives, tasks, and timelines.

• Assign roles and responsibilities to team members based on their skills and expertise.

• Establish clear communication channels to facilitate regular updates and feedback.

• Monitor project progress regularly and address any issues or risks promptly.

• Ensure effective coordination among team members a...read more

Imon calculation of VR controller involves determining the input/output connections, processing power, and sensor integration.

• Identify the required input/output connections for the VR controller.

• Determine the processing power needed for smooth operation.

• Integrate sensors for accurate tracking and interaction.

• Consider power consumption and battery life for portable controllers.

To create paint, mix pigments with a binder and solvent to form a liquid mixture that can be applied to surfaces.

• Select pigments based on desired color and properties

• Mix pigments with a binder (such as acrylic, oil, or water-based) to create a paste

• Add a solvent (such as water, alcohol, or mineral spirits) to adjust consistency and drying time

• Test the paint on a small surface to ensure desired color and finish

• Adjust the mixture as needed to achieve the desired results

Capacitor value is a measure of the amount of charge a capacitor can store.

• Capacitor value is measured in Farads (F).

• Capacitors can have different values such as microfarads (uF), picofarads (pF), and nanofarads (nF).

• The value of a capacitor determines its ability to store and release electrical energy.

• Choosing the right capacitor value is important for proper functioning of electronic circuits.

Machining all types involves using various tools and techniques to shape and cut materials into desired shapes and sizes.

• Machining can be done on materials like metal, plastic, wood, and ceramics.

• Common machining techniques include drilling, milling, turning, and grinding.

• CNC machines are often used for precision machining.

• Examples of machined products include engine parts, computer components, and furniture.