60+ Suchirindia Infratech Interview Questions and Answers

Writing test cases involves identifying test scenarios, creating test data, and documenting expected results.

• Identify test scenarios based on requirements and user stories

• Create test data that covers all possible scenarios

• Document expected results for each test case

• Use a combination of manual and automated testing

• In case of test failures, identify the root cause and report it as a defect

• Defects go through a defect life cycle, including identification, triage, fixing, and veri...read more

Answers to questions related to software engineering concepts and PL/SQL programming.

• Inline view is a virtual table created in the FROM clause of a SQL query.

• Views can be secured by granting appropriate privileges to users and implementing row-level security.

• BULK COLLECT is a feature in PL/SQL that allows fetching multiple rows from a query into a collection.

• PL/SQL program to display weekdays except Saturday and Sunday: DECLARE v_day VARCHAR2(20); BEGIN FOR i IN 1..7 LOOP v_d...read more

Code to check if two words are anagrams

• Convert both words to lowercase

• Remove all spaces and punctuation

• Sort the characters in both words

• Compare the sorted words

Explanation of UART, SPI, CAN, I2C timing diagrams and frame formats.

• UART: asynchronous serial communication, start and stop bits, baud rate

• SPI: synchronous serial communication, master-slave architecture, clock polarity and phase

• CAN: differential serial communication, arbitration, error detection and correction

• I2C: synchronous serial communication, master-slave architecture, addressing, clock stretching

RTE calls are generated to communicate between software components. Different types of calls are generated for each interface.

• RTE calls are generated to exchange data and trigger actions between software components.

• The type of call generated for each interface depends on the communication protocol used.

• For example, in a RESTful API interface, HTTP requests like GET, POST, PUT, and DELETE are generated.

• In a messaging interface, calls like publish, subscribe, and request-respon...read more

Static analysis is a process of analyzing code without executing it. Different layers in development require different types of testing.

• Static analysis involves analyzing code without executing it

• Different layers in development require different types of testing

• For the presentation layer, testing can include checking for UI/UX issues, accessibility, and responsiveness

• For the business logic layer, testing can include checking for logical errors, data validation, and security v...read more

final, finalize and finally are three different things in Java

• final is a keyword used to declare a constant value

• finalize is a method called by garbage collector before destroying an object

• finally is a block used in try-catch to execute code regardless of exception

Terraform will recreate the instance as per the template

• Terraform will detect that the instance is missing and recreate it based on the template

• The new instance will have the same configuration as defined in the template

• Any changes made to the instance outside of Terraform will be lost

Type mismatch error occurs when incorrect data type is used in a program.

• Type mismatch error can occur when trying to assign a string to an integer variable.

• It can also happen when performing operations on incompatible data types, such as adding a string to a number.

• Type mismatch errors are common in programming languages like Java, C++, and Python.

I have intermediate level programming knowledge.

• Proficient in Python and Java

• Familiar with HTML, CSS, and JavaScript

• Experience with database management using SQL

• Completed several programming projects in college

• Continuously learning and improving skills through online courses

Health checks after creating instances ensure the instances are functioning properly.

• Instance status checks ensure the instance is reachable and responding to traffic.

• System status checks ensure the underlying hardware is functioning properly.

• Example: If an instance fails the system status check, it may indicate a problem with the underlying host hardware.

Palindrome of a string using Java 8 features

• Use StringBuilder to reverse the string

• Use String.join() to concatenate the reversed string with the original string

• Use String.equalsIgnoreCase() to compare the concatenated string with the original string

The IP range for 500 IPs would typically be a /23 subnet.

• For 500 IPs, you would need at least a /23 subnet.

• A /23 subnet provides 512 IP addresses (2^9 = 512), with 510 usable IPs after subtracting network and broadcast addresses.

• The IP range for a /23 subnet would be from x.x.x.0 to x.x.x.255.

Handling workload requires prioritization, delegation, and time management.

• Prioritize tasks based on urgency and importance

• Delegate tasks to team members with appropriate skills and workload capacity

• Manage time effectively by setting realistic deadlines and avoiding multitasking

• Regularly review and adjust workload to ensure productivity and avoid burnout

Linux booting process involves several stages including BIOS, bootloader, kernel initialization, and user space initialization.

• The process starts with the BIOS (Basic Input/Output System) which initializes hardware components.

• The bootloader (GRUB or LILO) is then loaded which loads the kernel into memory.

• The kernel initializes drivers, mounts the root file system, and starts the init process.

• The init process then starts user space processes and services.

• The boot process can b...read more

I am familiar with various softwares including Microsoft Office, Adobe Creative Suite, and Google Suite.

• Microsoft Office

• Adobe Creative Suite

• Google Suite

Implement a sorting algorithm for an array of strings

• Use a sorting algorithm like bubble sort, selection sort, or merge sort

• Convert the strings to lowercase before comparing them for case-insensitive sorting

• Consider using a custom comparator function for more complex sorting criteria

• Example: Sorting an array of strings alphabetically: ['banana', 'apple', 'cherry'] -> ['apple', 'banana', 'cherry']

Launch an EC2 instance in a VPC and attach a role using Terraform

• Define a VPC resource in Terraform

• Define a subnet resource within the VPC

• Create a security group for the EC2 instance

• Define an IAM role for the EC2 instance

• Launch an EC2 instance within the subnet and attach the IAM role

I have fixed various bugs related to software performance and functionality.

• Resolved a bug causing the application to crash when processing large data sets.

• Fixed a bug that was causing incorrect calculations in the financial module.

• Addressed a bug that caused the user interface to freeze when performing certain actions.

• Solved a bug that resulted in data loss when saving files in a specific format.

• Resolved an issue where the search functionality was not returning accurate resu...read more

I have intermediate level knowledge of MATLAB.

• I have used MATLAB for data analysis and visualization.

• I am familiar with basic programming concepts like loops and conditional statements in MATLAB.

• I have also worked with toolboxes like Signal Processing and Statistics in MATLAB.

• I am comfortable using MATLAB for scientific computing and modeling.

AUTOSAR BSW stack is widely used in automotive industry

• AUTOSAR BSW stack is a standard software architecture for automotive ECUs

• It provides a set of basic software modules for communication, diagnostics, memory management, etc.

• Examples of AUTOSAR BSW stacks are Vector MICROSAR, Elektrobit EB tresos, etc.

CAN communication is not encrypted by default.

• CAN communication is not encrypted by default

• Encryption can be implemented on top of CAN communication for added security

• Examples of encrypted communication protocols include CAN FD with Secure Onboard Communication (SOC)

Time quanta refers to the smallest unit of time that a computer's operating system can allocate to a process.

• It is also known as a time slice or a quantum.

• It is used in multitasking operating systems to allocate CPU time to different processes.

• The length of a time quanta can vary depending on the operating system and its settings.

• If a process does not complete its task within its allocated time quanta, it is preempted and moved to the back of the queue.

• Examples of operating s...read more

DF memory stands for Delayed Feedback Memory.

• DF memory is a type of memory system used in digital signal processing.

• It is characterized by the presence of a feedback loop that introduces a delay in the memory access.

• DF memory is commonly used in applications such as echo cancellation and adaptive filters.

• It allows for the storage and retrieval of past data samples to perform calculations and adjustments.

• An example of DF memory is a tapped delay line, where the output of the m...read more

Firmware update over the air is the process of remotely updating the software on a device without requiring physical access.

• OTA updates allow for seamless and convenient updates to devices without user intervention.

• Devices must be connected to the internet to receive OTA updates.

• OTA updates can be scheduled to minimize disruption to users.

• Security measures must be in place to ensure the integrity of OTA updates.

• Examples of devices that receive OTA updates include smartphones,...read more

Smart pointers in C++ are objects that manage the memory of dynamically allocated objects, helping to prevent memory leaks.

• Smart pointers automatically manage memory deallocation

• Types include unique_ptr, shared_ptr, and weak_ptr

• Example: unique_ptr ptr(new int);

Implementing the HAL step by step using AIDL

• Create an AIDL interface file defining the methods to be implemented

• Implement the AIDL interface in a service class

• Register the service in the AndroidManifest.xml file

• Bind the service in the client application and call the methods

Microservices can be deployed using containerization tools like Docker and orchestration tools like Kubernetes.

• Use containerization tools like Docker to package each microservice along with its dependencies into a container image.

• Leverage orchestration tools like Kubernetes to manage and deploy multiple microservices across a cluster of machines.

• Implement continuous integration and continuous deployment (CI/CD) pipelines to automate the deployment process and ensure smooth up...read more

Basic commands in MATLAB include help, clear, clc, close all, and quit.

• help - displays help information for a specific command or function

• clear - clears all variables from the workspace

• clc - clears the command window

• close all - closes all open figures

• quit - exits MATLAB

• Example: help plot

• Example: clear

• Example: clc

• Example: close all

• Example: quit

A simple C program

• Include the stdio.h header file

• Declare the main function

• Use printf() function to print output

• Use scanf() function to take input

• End the program with return 0;

Factors affecting resistance of wire include material, length, cross-sectional area, and temperature.

• Material: Different materials have different resistivities, affecting resistance.

• Length: Longer wires have higher resistance due to increased collisions between electrons and atoms.

• Cross-sectional area: Thicker wires have lower resistance as there is more space for electrons to flow.

• Temperature: Resistance increases with temperature as atoms vibrate more, impeding electron flo...read more

Sheet metal is a thin and flat piece of metal used in various industries for manufacturing products.

• Sheet metal is commonly made from materials like aluminum, steel, or copper.

• It is used in industries such as automotive, aerospace, construction, and electronics.

• Sheet metal can be cut, bent, and formed into different shapes and sizes to create various products.

• Examples of sheet metal products include car bodies, airplane wings, HVAC ducts, and electronic enclosures.

Fast-tracking is a project management technique to accelerate the project schedule by overlapping activities.

• Fast-tracking involves identifying critical path activities that can be overlapped to reduce the project duration.

• It requires careful planning and coordination to ensure that the quality of work is not compromised.

• Examples of fast-tracking include overlapping design and construction phases in a building project or starting production before all testing is complete in a...read more

Routing consideration for harness involves planning the path of wires to ensure proper organization and avoid interference.

• Consider the length of wires to minimize signal loss

• Plan for proper separation of power and signal wires to avoid interference

• Avoid sharp bends and tight corners to prevent damage to wires

• Use cable ties or harness tape to secure and organize the wires

• Consider the thermal and mechanical stress on the wires during routing

Project management stages include initiation, planning, execution, monitoring and control, and closure.

• Initiation: defining the project scope, objectives, and stakeholders

• Planning: creating a detailed project plan, including timelines, budget, and resources

• Execution: carrying out the plan and completing the project deliverables

• Monitoring and control: tracking progress, identifying and addressing issues, and making necessary adjustments

• Closure: wrapping up the project, evaluat...read more

The current rating of USB used in a bus varies depending on the USB version.

• The USB 1.0 and 2.0 versions have a maximum current rating of 500mA.

• The USB 3.0 version has a maximum current rating of 900mA.

• The USB 3.1 and 3.2 versions have a maximum current rating of 1.5A.

• USB Power Delivery (USB PD) can provide up to 5A of current.

• The actual current rating may also depend on the specific USB device and its power requirements.

To make a 3D and 2D drawing for a wiring harness, I would use CAD software to create a detailed model and schematic.

• Use CAD software to create a 3D model of the wiring harness, including all components and connections

• Create a 2D schematic of the wiring harness, showing the layout and connections in a clear and organized manner

• Ensure that all wiring and components are accurately represented in both the 3D model and 2D schematic

• Include any necessary annotations or notes to clar...read more

SE Linux Policy is a security mechanism that controls access to resources based on policies.

• SE Linux Policy is a mandatory access control system that enforces policies defined by the system administrator.

• It provides fine-grained control over access to files, processes, and other system resources.

• SE Linux Policy can be complex to configure and troubleshoot, but it offers strong security benefits.

• Alternatives to SE Linux Policy include AppArmor and grsecurity, which also provid...read more

8051 is an 8-bit microcontroller widely used in embedded systems.

• Developed by Intel in 1980s

• Has 128 bytes of RAM and 4KB of ROM

• Supports both serial and parallel communication

• Used in various applications such as robotics, automation, and automotive systems

CAN protocol is a communication protocol used in automotive and industrial applications. RTR stands for Remote Transmission Request.

• CAN protocol is a message-based protocol used for communication between electronic control units in vehicles and industrial machinery.

• It uses a two-wire differential bus to transmit data between nodes on the network.

• RTR is a bit in the CAN message that indicates whether the message is a data frame or a remote frame.

• Remote Transmission Request (RT...read more

Cons of agile include lack of predictability, potential for scope creep, and difficulty in measuring progress.

• Lack of predictability in project timelines and outcomes

• Potential for scope creep due to frequent changes and iterations

• Difficulty in measuring progress and tracking project success

• Requires high level of collaboration and communication, which can be challenging in large teams or remote work environments

A function callback is a function that is passed as an argument to another function and is executed after the completion of that function.

• Callback functions are commonly used in asynchronous programming to handle tasks that take time to complete.

• Example: setTimeout function in JavaScript takes a callback function as an argument to execute after a specified time.

• Callback functions can also be used to customize behavior in higher-order functions like map, filter, and reduce in ...read more

Requirements in MRP are generated based on the demand for finished goods, lead times, inventory levels, and production capacity.

• MRP calculates requirements by exploding the bill of materials for each finished product

• It considers demand forecasts, customer orders, and safety stock levels

• Lead times for procurement and production are factored in to determine when materials are needed

• Inventory levels are monitored to ensure that enough stock is available to meet demand

• Production ...read more

Considerations for sheet metal and casting design

• Thickness of the material affects strength and cost

• Design for manufacturability to minimize waste and cost

• Consider material properties like ductility and heat resistance

• Include features for easy assembly and maintenance

• Account for shrinkage in casting design

Casting engine components in CREO

• Create a new part file in CREO

• Design the component using the appropriate tools

• Add draft angles and fillets to the design

• Create a mold for the component

• Use the mold to cast the component

Communication control service manages communication between different components in a system.

• Communication control service coordinates the flow of information between various parts of a system.

• It ensures that messages are sent and received correctly and in a timely manner.

• Examples include message queues, event-driven architectures, and service-oriented architectures.

Jenkins is commonly used for code build.

• Jenkins is a popular tool for continuous integration and continuous delivery (CI/CD).

• Other tools like GitLab CI/CD, Travis CI, and CircleCI are also commonly used for code build.

• These tools automate the process of building, testing, and deploying code changes.

Wire standards refer to the specifications and guidelines set for the design, construction, and testing of electrical wires.

• Wire standards ensure safety, reliability, and compatibility of electrical wiring systems.

• They cover aspects such as wire size, insulation material, voltage rating, and temperature resistance.

• Examples of wire standards include NEC (National Electrical Code), UL (Underwriters Laboratories), and IEC (International Electrotechnical Commission) standards.

GST process in STO scenarios involves movement of goods between two different states with tax implications.

• In STO scenarios, goods are transferred from one branch to another within the same company but in different states.

• GST is applicable on the supply of goods in STO scenarios, with tax implications based on the state of supply and recipient.

• The supplying branch issues a tax invoice to the receiving branch for the goods transferred, including applicable GST.

• The receiving br...read more

Canoe simulation is a software tool used for modeling and simulating the behavior of automotive electronic control units (ECUs) in a virtual environment.

• Canoe simulation allows engineers to test and validate the functionality of ECUs before physical implementation in vehicles.

• It can simulate various communication protocols such as CAN, LIN, and FlexRay to mimic real-world scenarios.

• Engineers can create and execute test cases, monitor signals, and analyze data to ensure the EC...read more

Design software tool test evaluates the proficiency of a candidate in using design software tools.

• The test may include tasks such as creating 3D models, drafting, and simulation

• Candidates may be asked to use software tools such as AutoCAD, SolidWorks, or CATIA

• The test may also assess the candidate's ability to troubleshoot and solve design problems

• The test may be timed and may have multiple levels of difficulty

Capacitor panel maintenance work involves inspecting, cleaning, and testing capacitors to ensure their proper functioning.

• Inspect capacitors for any signs of damage or leakage

• Clean capacitors and their terminals to remove dust and debris

• Test capacitors using a multimeter to check their capacitance and voltage ratings

• Replace faulty capacitors with new ones

• Ensure proper wiring and connections in the capacitor panel

• Regularly monitor and record the performance of capacitors

• Follow...read more

I have extensive systems engineering experience in designing, developing, and implementing complex systems.

• Designed and implemented a complex data management system for a large financial institution

• Led a team of engineers in developing a new software platform for a healthcare company

• Developed and implemented a system for tracking and analyzing customer data for an e-commerce company

• Experience with systems engineering methodologies such as Model-Based Systems Engineering (MBSE...read more

Agile is iterative and flexible, while waterfall is sequential and rigid.

• Agile involves continuous collaboration and adaptation, while waterfall follows a linear approach.

• Agile allows for changes throughout the project, while waterfall requires detailed planning upfront.

• Agile delivers working software in short iterations, while waterfall delivers the final product at the end of the project.

• Agile is better suited for projects with evolving requirements, while waterfall is idea...read more

SAFe (Scaled Agile Framework) is used to scale Agile practices across multiple teams and ensure alignment, collaboration, and delivery of value.

• SAFe helps organizations scale Agile practices beyond individual teams to ensure alignment and collaboration across multiple teams.

• It provides a framework for coordinating work, managing dependencies, and delivering value to customers more effectively.

• SAFe includes roles, ceremonies, and artifacts that help organizations implement Agi...read more

CAN and UDS are communication protocols used in automotive industry for vehicle diagnostics and control.

• CAN (Controller Area Network) is a communication protocol used for high-speed communication between electronic control units in vehicles.

• UDS (Unified Diagnostic Services) is a diagnostic communication protocol used in automotive industry for vehicle diagnostics.

• CAN is used for real-time data transmission, while UDS is used for diagnostic services like reading and clearing f...read more

Preventive maintenance work involves regularly scheduled inspections, repairs, and replacements to prevent equipment failure.

• Preventive maintenance is proactive and aims to prevent equipment breakdowns and costly repairs.

• It includes tasks such as lubrication, cleaning, calibration, and component replacements.

• Regular inspections help identify potential issues before they cause major problems.

• Preventive maintenance schedules should be based on manufacturer recommendations and e...read more

Scrum is time-boxed with fixed iterations, while Kanban is continuous flow with no fixed time frames.

• Scrum has fixed iterations called sprints, while Kanban has no fixed time frames.

• Scrum focuses on completing a set amount of work within a sprint, while Kanban focuses on continuous delivery of work.

• Scrum limits work in progress (WIP) to items in the sprint backlog, while Kanban limits WIP based on capacity and flow.

• Scrum requires a defined team structure with specific roles l...read more

C code to find the sum of elements in an array

• Declare an array of integers

• Initialize the array with values

• Use a loop to iterate through the array and add each element to a variable

• Print the sum of the elements

Definition of ready is a set of criteria that a product backlog item must meet before it can be worked on by the team.

• Definition of ready ensures that the team has all the necessary information, resources, and dependencies in place before starting work on a backlog item.

• Criteria in the definition of ready may include detailed requirements, acceptance criteria, dependencies identified, and estimates agreed upon.

• The purpose of having a definition of ready is to prevent interrup...read more

Project management practices involve planning, organizing, and executing projects to achieve specific goals within constraints.

• Define project scope, objectives, and deliverables

• Create a project plan with timelines and milestones

• Assign tasks and responsibilities to team members

• Monitor progress and adjust plans as needed

• Communicate effectively with stakeholders

• Use project management tools like Gantt charts or Kanban boards