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Normal basic apti lr conceptual questions
A microcontroller is a small computer on a single integrated circuit that contains a processor core, memory, and programmable input/output peripherals.
Microcontrollers are commonly used in embedded systems for controlling various devices and appliances.
They are programmed using languages like C or assembly language.
Examples of popular microcontrollers include Arduino, Raspberry Pi, and PIC.
Microcontrollers are often us...
I2C is a serial communication protocol used to connect multiple devices with two wires. SPI is another serial protocol with four wires.
I2C uses a master-slave architecture while SPI uses a master-master architecture.
I2C supports multiple devices on the same bus while SPI requires a separate chip select line for each device.
Hardware interrupts are triggered by external events while software interrupts are triggered by s
I applied via Campus Placement and was interviewed before Mar 2023. There was 1 interview round.
Compilation of a C program involves preprocessing, compiling, assembling, and linking.
Preprocessing: Includes header files, macro expansions, and comments removal. Example: gcc -E program.c
Compiling: Translates source code to assembly code. Example: gcc -S program.c
Assembling: Converts assembly code to machine code. Example: gcc -c program.s
Linking: Combines object files and libraries to generate executable. Example: g
Storage classes in C define the scope and lifetime of variables.
Storage classes include auto, register, static, extern, and typedef.
Auto variables are local to the block they are declared in.
Register variables are stored in CPU registers for faster access.
Static variables retain their value between function calls.
Extern variables are declared in one file and can be used in another.
Typedef is used to create new data typ
A computer boots up by executing the BIOS, loading the operating system into memory, and initializing hardware components.
BIOS (Basic Input/Output System) is the first code executed by a computer when powered on.
BIOS performs a Power-On Self Test (POST) to check hardware components.
BIOS then locates and loads the operating system from the boot device (e.g. hard drive, SSD, USB).
The operating system is loaded into memor...
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I applied via Campus Placement and was interviewed before Mar 2023. There were 2 interview rounds.
All about aptitude questions and test has multiple rounds
Asked about basic code like palindrome, string reverse
L&T Technology Services interview questions for designations
I applied via Other and was interviewed in Aug 2021. There were 4 interview rounds.
I applied via Campus Placement and was interviewed before Sep 2021. There were 5 interview rounds.
Medium level difficulty
Pseudo code and two partial codes of array logic with disired output in 25 mins.
I applied via Campus Placement and was interviewed in Aug 2020. There were 4 interview rounds.
A program to replace a character with another character in Java.
Create a string variable with the original text
Use the replace() method to replace the character with another character
Print the new string with the replaced character
I applied via Naukri.com and was interviewed before Feb 2021. There were 2 interview rounds.
I applied via Campus Placement and was interviewed in Nov 2020. There were 3 interview rounds.
Program to print unique elements in an array in Java
Create a HashSet to store unique elements
Iterate through the array and add each element to the HashSet
Print the HashSet to get the unique elements
Data structures are ways of organizing and storing data in a computer so that it can be accessed and used efficiently.
Arrays - a collection of elements of the same type
Linked Lists - a sequence of nodes where each node contains a reference to the next node
Stacks - a collection of elements with two main operations: push (add) and pop (remove)
Queues - a collection of elements with two main operations: enqueue (add) and d...
OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.
OOPs focuses on creating objects that contain both data and functions.
It emphasizes on encapsulation, inheritance, and polymorphism.
Examples of OOPs languages are Java, C++, Python, etc.
OOPs is used for creating modular, reusable and maintainable code.
Encapsulation: Hiding implementation details and exposing only necessary information.
Inheritance: Reusing code and creating a hierarchy of classes.
Polymorphism: Using a single interface to represent multiple entities.
Abstraction: Reducing complexity by hiding unnecessary details.
Examples: Java, C++, Python, Ruby, etc.
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows code reuse and promotes code organization.
The existing class is called the parent or superclass, and the new class is called the child or subclass.
The child class inherits all the properties and methods of the parent class and can also add its own unique properties and ...
Polymorphism is the ability of an object to take on many forms.
It allows objects of different classes to be treated as if they were objects of the same class.
It is achieved through method overriding and method overloading.
Example: A parent class Animal can have child classes like Dog, Cat, and Bird, each with their own unique implementation of the method 'makeSound'.
Polymorphism makes code more flexible and reusable.
Abstraction is the process of hiding complex implementation details and exposing only the necessary information.
Abstraction helps in reducing complexity and increasing efficiency.
It allows us to focus on the essential features of an object or system.
For example, a car can be abstracted as a vehicle with certain properties like speed, fuel efficiency, and seating capacity.
Abstraction can be achieved through interfaces,
Encapsulation is the process of hiding implementation details and providing a public interface for accessing the functionality.
Encapsulation helps in achieving data abstraction and information hiding
It prevents unauthorized access to the internal details of an object
It allows for easy modification of implementation without affecting the external code
Example: A class with private variables and public methods
Example: A b...
I applied via Job Portal and was interviewed before Jul 2021. There were 3 interview rounds.
To configure and verify custom DNS in Azure AD, follow these steps:
Create a DNS zone in Azure DNS
Add a custom domain to Azure AD
Create a CNAME record in the DNS zone that points to the Azure AD domain
Verify the custom domain in Azure AD
Update the DNS registrar to use the Azure DNS name servers
Test the custom DNS by accessing Azure AD resources using the custom domain
Azure AD supports various authentication types for secure access to resources.
Azure AD supports password-based authentication, multi-factor authentication, certificate-based authentication, and federated authentication.
It also supports OAuth 2.0 and OpenID Connect for secure authentication and authorization.
Examples of supported protocols include SAML, WS-Federation, and OAuth 2.0/OpenID Connect.
Azure AD also supports ...
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